/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/test-easy1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-03 17:49:53,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-03 17:49:53,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-03 17:49:53,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-03 17:49:53,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-03 17:49:53,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-03 17:49:53,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-03 17:49:53,954 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-03-03 17:49:53,967 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-03 17:49:53,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-03 17:49:53,968 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-03 17:49:53,968 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-03 17:49:53,968 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-03 17:49:53,968 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-03 17:49:53,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-03 17:49:53,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-03 17:49:53,969 INFO L138 SettingsManager]: * Use SBE=true [2022-03-03 17:49:53,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-03 17:49:53,969 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-03 17:49:53,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-03 17:49:53,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-03 17:49:53,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-03 17:49:53,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-03 17:49:53,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-03 17:49:53,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-03 17:49:53,970 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-03 17:49:53,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-03 17:49:53,970 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-03 17:49:53,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-03 17:49:53,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-03 17:49:53,971 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-03 17:49:53,971 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-03 17:49:53,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-03 17:49:53,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 17:49:53,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-03 17:49:53,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-03 17:49:53,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-03 17:49:53,971 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-03 17:49:53,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-03 17:49:53,972 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-03 17:49:53,972 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-03 17:49:53,972 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-03 17:49:54,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-03 17:49:54,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-03 17:49:54,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-03 17:49:54,183 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-03 17:49:54,183 INFO L275 PluginConnector]: CDTParser initialized [2022-03-03 17:49:54,184 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy1.wvr.c [2022-03-03 17:49:54,223 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1fc2aae8/951b0838e3dd478a908370d0e302616a/FLAGbb2a7bd7f [2022-03-03 17:49:54,581 INFO L306 CDTParser]: Found 1 translation units. [2022-03-03 17:49:54,582 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy1.wvr.c [2022-03-03 17:49:54,590 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1fc2aae8/951b0838e3dd478a908370d0e302616a/FLAGbb2a7bd7f [2022-03-03 17:49:54,602 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1fc2aae8/951b0838e3dd478a908370d0e302616a [2022-03-03 17:49:54,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-03 17:49:54,607 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-03 17:49:54,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-03 17:49:54,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-03 17:49:54,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-03 17:49:54,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 05:49:54" (1/1) ... [2022-03-03 17:49:54,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57502965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:49:54, skipping insertion in model container [2022-03-03 17:49:54,611 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 05:49:54" (1/1) ... [2022-03-03 17:49:54,615 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-03 17:49:54,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-03 17:49:54,753 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy1.wvr.c[1876,1889] [2022-03-03 17:49:54,755 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-03 17:49:54,759 INFO L203 MainTranslator]: Completed pre-run [2022-03-03 17:49:54,770 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy1.wvr.c[1876,1889] [2022-03-03 17:49:54,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-03 17:49:54,778 INFO L208 MainTranslator]: Completed translation [2022-03-03 17:49:54,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:49:54 WrapperNode [2022-03-03 17:49:54,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-03 17:49:54,779 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-03 17:49:54,779 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-03 17:49:54,779 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-03 17:49:54,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:49:54" (1/1) ... [2022-03-03 17:49:54,790 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:49:54" (1/1) ... [2022-03-03 17:49:54,802 INFO L137 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2022-03-03 17:49:54,802 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-03 17:49:54,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-03 17:49:54,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-03 17:49:54,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-03 17:49:54,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:49:54" (1/1) ... [2022-03-03 17:49:54,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:49:54" (1/1) ... [2022-03-03 17:49:54,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:49:54" (1/1) ... [2022-03-03 17:49:54,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:49:54" (1/1) ... [2022-03-03 17:49:54,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:49:54" (1/1) ... [2022-03-03 17:49:54,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:49:54" (1/1) ... [2022-03-03 17:49:54,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:49:54" (1/1) ... [2022-03-03 17:49:54,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-03 17:49:54,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-03 17:49:54,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-03 17:49:54,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-03 17:49:54,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:49:54" (1/1) ... [2022-03-03 17:49:54,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 17:49:54,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:49:54,840 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-03 17:49:54,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-03 17:49:54,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-03 17:49:54,868 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-03 17:49:54,868 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-03 17:49:54,868 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-03 17:49:54,869 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-03 17:49:54,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-03 17:49:54,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-03 17:49:54,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-03 17:49:54,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-03 17:49:54,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-03 17:49:54,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-03 17:49:54,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-03 17:49:54,874 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-03 17:49:54,951 INFO L234 CfgBuilder]: Building ICFG [2022-03-03 17:49:54,952 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-03 17:49:55,129 INFO L275 CfgBuilder]: Performing block encoding [2022-03-03 17:49:55,136 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-03 17:49:55,136 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-03 17:49:55,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 05:49:55 BoogieIcfgContainer [2022-03-03 17:49:55,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-03 17:49:55,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-03 17:49:55,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-03 17:49:55,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-03 17:49:55,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 05:49:54" (1/3) ... [2022-03-03 17:49:55,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267ada7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 05:49:55, skipping insertion in model container [2022-03-03 17:49:55,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:49:54" (2/3) ... [2022-03-03 17:49:55,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267ada7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 05:49:55, skipping insertion in model container [2022-03-03 17:49:55,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 05:49:55" (3/3) ... [2022-03-03 17:49:55,150 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2022-03-03 17:49:55,154 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-03 17:49:55,154 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-03 17:49:55,154 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-03 17:49:55,154 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-03 17:49:55,185 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:55,185 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:55,185 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:55,186 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:55,186 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:55,186 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:55,186 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:55,186 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:55,187 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:55,187 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:55,187 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:55,187 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:55,188 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:55,188 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:55,188 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:55,188 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:55,188 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:55,189 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:55,189 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:55,189 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:55,191 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:55,192 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:55,192 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:55,193 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:55,193 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:55,194 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:55,197 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-03 17:49:55,245 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-03 17:49:55,254 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-03 17:49:55,255 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-03 17:49:55,270 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 84 transitions, 184 flow [2022-03-03 17:49:55,320 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 302 states, 301 states have (on average 2.574750830564784) internal successors, (775), 301 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:55,323 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 301 states have (on average 2.574750830564784) internal successors, (775), 301 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:55,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-03 17:49:55,335 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:55,335 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:55,336 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:55,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:55,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1149725056, now seen corresponding path program 1 times [2022-03-03 17:49:55,345 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:55,345 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497314935] [2022-03-03 17:49:55,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:55,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:55,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:55,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:55,531 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:55,532 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497314935] [2022-03-03 17:49:55,532 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497314935] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:49:55,532 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:49:55,532 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-03 17:49:55,533 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034182837] [2022-03-03 17:49:55,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:49:55,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-03 17:49:55,537 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:55,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-03 17:49:55,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-03 17:49:55,570 INFO L87 Difference]: Start difference. First operand has 302 states, 301 states have (on average 2.574750830564784) internal successors, (775), 301 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:55,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:55,606 INFO L93 Difference]: Finished difference Result 302 states and 708 transitions. [2022-03-03 17:49:55,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-03 17:49:55,608 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-03-03 17:49:55,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:55,618 INFO L225 Difference]: With dead ends: 302 [2022-03-03 17:49:55,618 INFO L226 Difference]: Without dead ends: 300 [2022-03-03 17:49:55,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-03 17:49:55,637 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:49:55,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:49:55,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-03-03 17:49:55,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2022-03-03 17:49:55,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 2.3612040133779266) internal successors, (706), 299 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:55,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 706 transitions. [2022-03-03 17:49:55,692 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 706 transitions. Word has length 59 [2022-03-03 17:49:55,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:55,693 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 706 transitions. [2022-03-03 17:49:55,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:55,693 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 706 transitions. [2022-03-03 17:49:55,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-03 17:49:55,696 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:55,696 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:55,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-03 17:49:55,696 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:55,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:55,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1697195594, now seen corresponding path program 1 times [2022-03-03 17:49:55,697 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:55,697 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146220065] [2022-03-03 17:49:55,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:55,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:55,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:55,921 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:55,921 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146220065] [2022-03-03 17:49:55,921 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146220065] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:49:55,921 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:49:55,921 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 17:49:55,922 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929049393] [2022-03-03 17:49:55,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:49:55,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 17:49:55,923 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:55,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 17:49:55,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-03-03 17:49:55,924 INFO L87 Difference]: Start difference. First operand 300 states and 706 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:56,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:56,060 INFO L93 Difference]: Finished difference Result 504 states and 1216 transitions. [2022-03-03 17:49:56,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 17:49:56,062 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-03-03 17:49:56,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:56,066 INFO L225 Difference]: With dead ends: 504 [2022-03-03 17:49:56,066 INFO L226 Difference]: Without dead ends: 453 [2022-03-03 17:49:56,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-03-03 17:49:56,069 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 63 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:49:56,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 278 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:49:56,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-03-03 17:49:56,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 355. [2022-03-03 17:49:56,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 2.364406779661017) internal successors, (837), 354 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:56,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 837 transitions. [2022-03-03 17:49:56,097 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 837 transitions. Word has length 59 [2022-03-03 17:49:56,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:56,097 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 837 transitions. [2022-03-03 17:49:56,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:56,097 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 837 transitions. [2022-03-03 17:49:56,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-03 17:49:56,100 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:56,100 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:56,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-03 17:49:56,100 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:56,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:56,101 INFO L85 PathProgramCache]: Analyzing trace with hash -395182923, now seen corresponding path program 1 times [2022-03-03 17:49:56,101 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:56,101 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972342304] [2022-03-03 17:49:56,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:56,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:56,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:56,221 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:56,221 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972342304] [2022-03-03 17:49:56,222 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972342304] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:49:56,222 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:49:56,222 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-03 17:49:56,222 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420724766] [2022-03-03 17:49:56,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:49:56,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 17:49:56,223 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:56,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 17:49:56,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:49:56,223 INFO L87 Difference]: Start difference. First operand 355 states and 837 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:56,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:56,304 INFO L93 Difference]: Finished difference Result 586 states and 1395 transitions. [2022-03-03 17:49:56,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 17:49:56,305 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-03-03 17:49:56,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:56,309 INFO L225 Difference]: With dead ends: 586 [2022-03-03 17:49:56,309 INFO L226 Difference]: Without dead ends: 586 [2022-03-03 17:49:56,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:49:56,314 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 88 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:49:56,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 247 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:49:56,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-03-03 17:49:56,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 353. [2022-03-03 17:49:56,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 2.428977272727273) internal successors, (855), 352 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:56,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 855 transitions. [2022-03-03 17:49:56,326 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 855 transitions. Word has length 63 [2022-03-03 17:49:56,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:56,326 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 855 transitions. [2022-03-03 17:49:56,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:56,327 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 855 transitions. [2022-03-03 17:49:56,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-03 17:49:56,330 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:56,330 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:56,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-03 17:49:56,331 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:56,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:56,331 INFO L85 PathProgramCache]: Analyzing trace with hash -459418951, now seen corresponding path program 2 times [2022-03-03 17:49:56,332 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:56,332 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022895755] [2022-03-03 17:49:56,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:56,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:56,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:56,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:56,441 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:56,441 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022895755] [2022-03-03 17:49:56,441 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022895755] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:49:56,442 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:49:56,442 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-03 17:49:56,442 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051625353] [2022-03-03 17:49:56,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:49:56,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 17:49:56,443 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:56,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 17:49:56,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:49:56,444 INFO L87 Difference]: Start difference. First operand 353 states and 855 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:56,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:56,531 INFO L93 Difference]: Finished difference Result 460 states and 1098 transitions. [2022-03-03 17:49:56,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 17:49:56,531 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-03-03 17:49:56,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:56,533 INFO L225 Difference]: With dead ends: 460 [2022-03-03 17:49:56,534 INFO L226 Difference]: Without dead ends: 448 [2022-03-03 17:49:56,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:49:56,547 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 90 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:49:56,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 261 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:49:56,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-03-03 17:49:56,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 331. [2022-03-03 17:49:56,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 2.390909090909091) internal successors, (789), 330 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:56,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 789 transitions. [2022-03-03 17:49:56,559 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 789 transitions. Word has length 63 [2022-03-03 17:49:56,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:56,560 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 789 transitions. [2022-03-03 17:49:56,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:56,560 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 789 transitions. [2022-03-03 17:49:56,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-03 17:49:56,561 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:56,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:56,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-03 17:49:56,562 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:56,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:56,564 INFO L85 PathProgramCache]: Analyzing trace with hash -88921197, now seen corresponding path program 1 times [2022-03-03 17:49:56,564 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:56,565 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425203607] [2022-03-03 17:49:56,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:56,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:56,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:56,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:56,754 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:56,754 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425203607] [2022-03-03 17:49:56,754 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425203607] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:49:56,754 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307718556] [2022-03-03 17:49:56,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:56,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:56,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:49:56,759 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:49:56,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-03 17:49:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:56,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 17:49:56,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:49:57,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:57,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:49:57,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:57,388 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307718556] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 17:49:57,388 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 17:49:57,388 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2022-03-03 17:49:57,388 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473524503] [2022-03-03 17:49:57,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:49:57,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 17:49:57,389 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:57,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 17:49:57,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-03-03 17:49:57,390 INFO L87 Difference]: Start difference. First operand 331 states and 789 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:57,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:57,462 INFO L93 Difference]: Finished difference Result 594 states and 1387 transitions. [2022-03-03 17:49:57,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 17:49:57,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-03-03 17:49:57,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:57,466 INFO L225 Difference]: With dead ends: 594 [2022-03-03 17:49:57,466 INFO L226 Difference]: Without dead ends: 594 [2022-03-03 17:49:57,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-03-03 17:49:57,467 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 101 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:49:57,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 199 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:49:57,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2022-03-03 17:49:57,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 369. [2022-03-03 17:49:57,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 2.442934782608696) internal successors, (899), 368 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:57,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 899 transitions. [2022-03-03 17:49:57,478 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 899 transitions. Word has length 63 [2022-03-03 17:49:57,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:57,478 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 899 transitions. [2022-03-03 17:49:57,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:57,478 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 899 transitions. [2022-03-03 17:49:57,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-03 17:49:57,480 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:57,480 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:57,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-03 17:49:57,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:57,698 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:57,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:57,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1789564179, now seen corresponding path program 2 times [2022-03-03 17:49:57,698 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:57,699 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923725883] [2022-03-03 17:49:57,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:57,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:57,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:57,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:57,761 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:57,762 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923725883] [2022-03-03 17:49:57,762 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923725883] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:49:57,762 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:49:57,762 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-03 17:49:57,762 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866030377] [2022-03-03 17:49:57,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:49:57,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 17:49:57,762 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:57,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 17:49:57,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:49:57,763 INFO L87 Difference]: Start difference. First operand 369 states and 899 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:57,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:57,826 INFO L93 Difference]: Finished difference Result 470 states and 1119 transitions. [2022-03-03 17:49:57,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 17:49:57,826 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-03-03 17:49:57,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:57,829 INFO L225 Difference]: With dead ends: 470 [2022-03-03 17:49:57,829 INFO L226 Difference]: Without dead ends: 437 [2022-03-03 17:49:57,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:49:57,831 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 83 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:49:57,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 209 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:49:57,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-03-03 17:49:57,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 369. [2022-03-03 17:49:57,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 2.4157608695652173) internal successors, (889), 368 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:57,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 889 transitions. [2022-03-03 17:49:57,842 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 889 transitions. Word has length 63 [2022-03-03 17:49:57,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:57,843 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 889 transitions. [2022-03-03 17:49:57,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:57,843 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 889 transitions. [2022-03-03 17:49:57,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:49:57,844 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:57,844 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:57,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-03 17:49:57,844 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:57,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:57,845 INFO L85 PathProgramCache]: Analyzing trace with hash -269043950, now seen corresponding path program 1 times [2022-03-03 17:49:57,845 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:57,845 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627890510] [2022-03-03 17:49:57,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:57,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:57,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:57,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:57,992 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:57,992 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627890510] [2022-03-03 17:49:57,992 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627890510] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:49:57,992 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391809319] [2022-03-03 17:49:57,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:57,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:57,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:49:57,994 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:49:57,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-03 17:49:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:58,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-03 17:49:58,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:49:58,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:58,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:49:58,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:49:58,602 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391809319] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:49:58,602 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:49:58,602 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 24 [2022-03-03 17:49:58,602 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197243446] [2022-03-03 17:49:58,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:49:58,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 17:49:58,603 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:58,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 17:49:58,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2022-03-03 17:49:58,604 INFO L87 Difference]: Start difference. First operand 369 states and 889 transitions. Second operand has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:00,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:00,033 INFO L93 Difference]: Finished difference Result 1418 states and 3453 transitions. [2022-03-03 17:50:00,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-03 17:50:00,036 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 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 67 [2022-03-03 17:50:00,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:00,041 INFO L225 Difference]: With dead ends: 1418 [2022-03-03 17:50:00,041 INFO L226 Difference]: Without dead ends: 1367 [2022-03-03 17:50:00,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1459 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1023, Invalid=4677, Unknown=0, NotChecked=0, Total=5700 [2022-03-03 17:50:00,043 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 845 mSDsluCounter, 2200 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 2209 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:00,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [845 Valid, 2209 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:50:00,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2022-03-03 17:50:00,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 654. [2022-03-03 17:50:00,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 653 states have (on average 2.5068912710566615) internal successors, (1637), 653 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:00,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1637 transitions. [2022-03-03 17:50:00,063 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1637 transitions. Word has length 67 [2022-03-03 17:50:00,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:00,063 INFO L470 AbstractCegarLoop]: Abstraction has 654 states and 1637 transitions. [2022-03-03 17:50:00,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:00,063 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1637 transitions. [2022-03-03 17:50:00,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:50:00,064 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:00,064 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:00,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-03 17:50:00,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-03-03 17:50:00,285 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:00,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:00,286 INFO L85 PathProgramCache]: Analyzing trace with hash 671283466, now seen corresponding path program 2 times [2022-03-03 17:50:00,286 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:00,286 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407355156] [2022-03-03 17:50:00,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:00,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:00,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:00,405 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:00,405 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407355156] [2022-03-03 17:50:00,405 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407355156] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:00,405 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836506199] [2022-03-03 17:50:00,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:50:00,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:00,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:00,407 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:50:00,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-03 17:50:00,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:50:00,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:50:00,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-03 17:50:00,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:00,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:00,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:00,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:50:00,984 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836506199] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:00,984 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:00,984 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 24 [2022-03-03 17:50:00,985 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479358184] [2022-03-03 17:50:00,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:00,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 17:50:00,985 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:00,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 17:50:00,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2022-03-03 17:50:00,986 INFO L87 Difference]: Start difference. First operand 654 states and 1637 transitions. Second operand has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:02,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:02,523 INFO L93 Difference]: Finished difference Result 2313 states and 5964 transitions. [2022-03-03 17:50:02,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-03-03 17:50:02,523 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:50:02,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:02,532 INFO L225 Difference]: With dead ends: 2313 [2022-03-03 17:50:02,532 INFO L226 Difference]: Without dead ends: 2262 [2022-03-03 17:50:02,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1461 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1036, Invalid=4816, Unknown=0, NotChecked=0, Total=5852 [2022-03-03 17:50:02,534 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 704 mSDsluCounter, 2123 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 2115 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:02,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [704 Valid, 2115 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:50:02,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2022-03-03 17:50:02,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 1030. [2022-03-03 17:50:02,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 1029 states have (on average 2.7084548104956268) internal successors, (2787), 1029 states have internal predecessors, (2787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:02,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 2787 transitions. [2022-03-03 17:50:02,564 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 2787 transitions. Word has length 67 [2022-03-03 17:50:02,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:02,564 INFO L470 AbstractCegarLoop]: Abstraction has 1030 states and 2787 transitions. [2022-03-03 17:50:02,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:02,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 2787 transitions. [2022-03-03 17:50:02,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:50:02,566 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:02,567 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:02,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-03 17:50:02,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:02,783 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:02,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:02,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1299249746, now seen corresponding path program 3 times [2022-03-03 17:50:02,784 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:02,784 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207452207] [2022-03-03 17:50:02,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:02,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:02,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:02,897 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:02,897 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207452207] [2022-03-03 17:50:02,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207452207] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:50:02,897 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:50:02,897 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-03 17:50:02,897 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332319018] [2022-03-03 17:50:02,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:50:02,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-03 17:50:02,897 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:02,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-03 17:50:02,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-03-03 17:50:02,898 INFO L87 Difference]: Start difference. First operand 1030 states and 2787 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:03,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:03,138 INFO L93 Difference]: Finished difference Result 1297 states and 3485 transitions. [2022-03-03 17:50:03,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-03 17:50:03,139 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-03-03 17:50:03,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:03,143 INFO L225 Difference]: With dead ends: 1297 [2022-03-03 17:50:03,144 INFO L226 Difference]: Without dead ends: 1246 [2022-03-03 17:50:03,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2022-03-03 17:50:03,144 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 116 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:03,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 885 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:50:03,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2022-03-03 17:50:03,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1070. [2022-03-03 17:50:03,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 1069 states have (on average 2.7100093545369504) internal successors, (2897), 1069 states have internal predecessors, (2897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:03,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 2897 transitions. [2022-03-03 17:50:03,167 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 2897 transitions. Word has length 67 [2022-03-03 17:50:03,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:03,168 INFO L470 AbstractCegarLoop]: Abstraction has 1070 states and 2897 transitions. [2022-03-03 17:50:03,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:03,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 2897 transitions. [2022-03-03 17:50:03,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:50:03,170 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:03,170 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:03,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-03 17:50:03,172 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:03,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:03,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1756265754, now seen corresponding path program 4 times [2022-03-03 17:50:03,173 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:03,173 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316739145] [2022-03-03 17:50:03,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:03,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:03,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:03,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:03,282 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:03,282 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316739145] [2022-03-03 17:50:03,282 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316739145] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:03,282 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761899003] [2022-03-03 17:50:03,282 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:50:03,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:03,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:03,284 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:50:03,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-03 17:50:03,362 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:50:03,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:50:03,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-03 17:50:03,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:03,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:03,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:03,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:50:03,948 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761899003] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:03,948 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:03,948 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 24 [2022-03-03 17:50:03,948 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066322269] [2022-03-03 17:50:03,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:03,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 17:50:03,948 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:03,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 17:50:03,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2022-03-03 17:50:03,949 INFO L87 Difference]: Start difference. First operand 1070 states and 2897 transitions. Second operand has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:04,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:04,953 INFO L93 Difference]: Finished difference Result 2257 states and 6087 transitions. [2022-03-03 17:50:04,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-03 17:50:04,954 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 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 67 [2022-03-03 17:50:04,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:04,962 INFO L225 Difference]: With dead ends: 2257 [2022-03-03 17:50:04,962 INFO L226 Difference]: Without dead ends: 2206 [2022-03-03 17:50:04,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 122 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=529, Invalid=2777, Unknown=0, NotChecked=0, Total=3306 [2022-03-03 17:50:04,963 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 384 mSDsluCounter, 2171 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 2167 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:04,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 2167 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:50:04,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2022-03-03 17:50:04,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 1294. [2022-03-03 17:50:04,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1293 states have (on average 2.7633410672853826) internal successors, (3573), 1293 states have internal predecessors, (3573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:04,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 3573 transitions. [2022-03-03 17:50:04,993 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 3573 transitions. Word has length 67 [2022-03-03 17:50:04,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:04,993 INFO L470 AbstractCegarLoop]: Abstraction has 1294 states and 3573 transitions. [2022-03-03 17:50:04,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:04,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 3573 transitions. [2022-03-03 17:50:04,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:50:04,996 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:04,996 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:05,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-03 17:50:05,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:05,208 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:05,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:05,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1118977604, now seen corresponding path program 5 times [2022-03-03 17:50:05,209 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:05,209 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478173713] [2022-03-03 17:50:05,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:05,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:05,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:05,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:05,311 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:05,311 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478173713] [2022-03-03 17:50:05,311 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478173713] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:05,311 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674631534] [2022-03-03 17:50:05,311 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:50:05,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:05,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:05,320 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:50:05,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-03 17:50:05,361 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:50:05,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:50:05,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-03 17:50:05,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:05,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:05,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:05,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:50:05,884 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674631534] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:05,884 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:05,884 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 24 [2022-03-03 17:50:05,886 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178494664] [2022-03-03 17:50:05,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:05,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 17:50:05,887 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:05,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 17:50:05,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2022-03-03 17:50:05,888 INFO L87 Difference]: Start difference. First operand 1294 states and 3573 transitions. Second operand has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:06,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:06,797 INFO L93 Difference]: Finished difference Result 2405 states and 6522 transitions. [2022-03-03 17:50:06,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 17:50:06,797 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:50:06,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:06,806 INFO L225 Difference]: With dead ends: 2405 [2022-03-03 17:50:06,806 INFO L226 Difference]: Without dead ends: 2354 [2022-03-03 17:50:06,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 122 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=458, Invalid=2298, Unknown=0, NotChecked=0, Total=2756 [2022-03-03 17:50:06,808 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 427 mSDsluCounter, 2151 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 2123 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:06,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 2123 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1011 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:50:06,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2354 states. [2022-03-03 17:50:06,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2354 to 1598. [2022-03-03 17:50:06,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1597 states have (on average 2.8058860363180966) internal successors, (4481), 1597 states have internal predecessors, (4481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:06,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 4481 transitions. [2022-03-03 17:50:06,843 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 4481 transitions. Word has length 67 [2022-03-03 17:50:06,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:06,843 INFO L470 AbstractCegarLoop]: Abstraction has 1598 states and 4481 transitions. [2022-03-03 17:50:06,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:06,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 4481 transitions. [2022-03-03 17:50:06,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:50:06,846 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:06,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:06,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-03 17:50:07,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-03-03 17:50:07,074 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:07,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:07,074 INFO L85 PathProgramCache]: Analyzing trace with hash 611084842, now seen corresponding path program 6 times [2022-03-03 17:50:07,074 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:07,074 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676774681] [2022-03-03 17:50:07,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:07,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:07,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:07,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:07,181 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:07,181 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676774681] [2022-03-03 17:50:07,181 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676774681] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:07,182 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504307532] [2022-03-03 17:50:07,182 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:50:07,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:07,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:07,183 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:50:07,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-03 17:50:07,232 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:50:07,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:50:07,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-03 17:50:07,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:07,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:07,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:07,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:50:07,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504307532] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:07,766 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:07,766 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 24 [2022-03-03 17:50:07,767 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643042653] [2022-03-03 17:50:07,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:07,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 17:50:07,767 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:07,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 17:50:07,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2022-03-03 17:50:07,768 INFO L87 Difference]: Start difference. First operand 1598 states and 4481 transitions. Second operand has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:09,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:09,123 INFO L93 Difference]: Finished difference Result 3131 states and 8611 transitions. [2022-03-03 17:50:09,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-03 17:50:09,123 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 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 67 [2022-03-03 17:50:09,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:09,134 INFO L225 Difference]: With dead ends: 3131 [2022-03-03 17:50:09,135 INFO L226 Difference]: Without dead ends: 3080 [2022-03-03 17:50:09,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 122 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1244 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=908, Invalid=4348, Unknown=0, NotChecked=0, Total=5256 [2022-03-03 17:50:09,136 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 453 mSDsluCounter, 2242 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 2243 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:09,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 2243 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:50:09,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3080 states. [2022-03-03 17:50:09,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3080 to 1882. [2022-03-03 17:50:09,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1881 states have (on average 2.8399787347155767) internal successors, (5342), 1881 states have internal predecessors, (5342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:09,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 5342 transitions. [2022-03-03 17:50:09,179 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 5342 transitions. Word has length 67 [2022-03-03 17:50:09,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:09,180 INFO L470 AbstractCegarLoop]: Abstraction has 1882 states and 5342 transitions. [2022-03-03 17:50:09,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:09,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 5342 transitions. [2022-03-03 17:50:09,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:50:09,184 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:09,184 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:09,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-03 17:50:09,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:09,399 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:09,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:09,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1612226274, now seen corresponding path program 7 times [2022-03-03 17:50:09,400 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:09,400 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716634215] [2022-03-03 17:50:09,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:09,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:09,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:09,494 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:09,494 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716634215] [2022-03-03 17:50:09,494 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716634215] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:50:09,494 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:50:09,494 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-03 17:50:09,494 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91498477] [2022-03-03 17:50:09,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:50:09,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-03 17:50:09,494 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:09,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-03 17:50:09,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-03-03 17:50:09,495 INFO L87 Difference]: Start difference. First operand 1882 states and 5342 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:09,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:09,626 INFO L93 Difference]: Finished difference Result 2241 states and 6313 transitions. [2022-03-03 17:50:09,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 17:50:09,626 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-03-03 17:50:09,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:09,634 INFO L225 Difference]: With dead ends: 2241 [2022-03-03 17:50:09,634 INFO L226 Difference]: Without dead ends: 2190 [2022-03-03 17:50:09,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:50:09,635 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 105 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:09,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 646 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:50:09,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2190 states. [2022-03-03 17:50:09,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2190 to 1942. [2022-03-03 17:50:09,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1941 states have (on average 2.8433797011849564) internal successors, (5519), 1941 states have internal predecessors, (5519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:09,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 5519 transitions. [2022-03-03 17:50:09,673 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 5519 transitions. Word has length 67 [2022-03-03 17:50:09,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:09,673 INFO L470 AbstractCegarLoop]: Abstraction has 1942 states and 5519 transitions. [2022-03-03 17:50:09,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:09,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 5519 transitions. [2022-03-03 17:50:09,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:50:09,677 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:09,677 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:09,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-03 17:50:09,677 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:09,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:09,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1734679074, now seen corresponding path program 8 times [2022-03-03 17:50:09,678 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:09,678 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999211879] [2022-03-03 17:50:09,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:09,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:09,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:09,770 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:09,770 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999211879] [2022-03-03 17:50:09,770 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999211879] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:09,770 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160715715] [2022-03-03 17:50:09,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:50:09,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:09,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:09,772 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:50:09,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-03 17:50:09,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:50:09,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:50:09,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 17:50:09,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:10,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:10,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:10,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:10,373 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160715715] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:10,373 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:10,373 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2022-03-03 17:50:10,373 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603229089] [2022-03-03 17:50:10,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:10,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:50:10,374 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:10,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:50:10,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:50:10,374 INFO L87 Difference]: Start difference. First operand 1942 states and 5519 transitions. Second operand has 22 states, 22 states have (on average 4.545454545454546) internal successors, (100), 22 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:10,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:10,584 INFO L93 Difference]: Finished difference Result 2313 states and 6511 transitions. [2022-03-03 17:50:10,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-03 17:50:10,585 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.545454545454546) internal successors, (100), 22 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:50:10,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:10,591 INFO L225 Difference]: With dead ends: 2313 [2022-03-03 17:50:10,592 INFO L226 Difference]: Without dead ends: 2166 [2022-03-03 17:50:10,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=717, Unknown=0, NotChecked=0, Total=870 [2022-03-03 17:50:10,592 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 171 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:10,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 904 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:50:10,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2166 states. [2022-03-03 17:50:10,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2166 to 1946. [2022-03-03 17:50:10,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1946 states, 1945 states have (on average 2.837017994858612) internal successors, (5518), 1945 states have internal predecessors, (5518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:10,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 5518 transitions. [2022-03-03 17:50:10,629 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 5518 transitions. Word has length 67 [2022-03-03 17:50:10,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:10,629 INFO L470 AbstractCegarLoop]: Abstraction has 1946 states and 5518 transitions. [2022-03-03 17:50:10,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.545454545454546) internal successors, (100), 22 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:10,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 5518 transitions. [2022-03-03 17:50:10,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:50:10,633 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:10,633 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:10,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-03 17:50:10,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:10,848 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:10,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:10,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1013282806, now seen corresponding path program 9 times [2022-03-03 17:50:10,849 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:10,849 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472234173] [2022-03-03 17:50:10,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:10,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:10,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:10,941 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:10,941 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472234173] [2022-03-03 17:50:10,941 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472234173] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:10,942 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778232928] [2022-03-03 17:50:10,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:50:10,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:10,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:10,943 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:50:10,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-03 17:50:11,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:50:11,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:50:11,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 17:50:11,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:11,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:11,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:11,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:11,479 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778232928] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:11,479 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:11,479 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 21 [2022-03-03 17:50:11,479 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479994232] [2022-03-03 17:50:11,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:11,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:50:11,479 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:11,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:50:11,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:50:11,480 INFO L87 Difference]: Start difference. First operand 1946 states and 5518 transitions. Second operand has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:11,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:11,762 INFO L93 Difference]: Finished difference Result 2237 states and 6294 transitions. [2022-03-03 17:50:11,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-03 17:50:11,762 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-03 17:50:11,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:11,767 INFO L225 Difference]: With dead ends: 2237 [2022-03-03 17:50:11,767 INFO L226 Difference]: Without dead ends: 2138 [2022-03-03 17:50:11,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 122 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=774, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:50:11,768 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 201 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:11,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 1179 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:50:11,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2138 states. [2022-03-03 17:50:11,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2138 to 1914. [2022-03-03 17:50:11,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1913 states have (on average 2.8384736016727654) internal successors, (5430), 1913 states have internal predecessors, (5430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:11,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 5430 transitions. [2022-03-03 17:50:11,817 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 5430 transitions. Word has length 67 [2022-03-03 17:50:11,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:11,817 INFO L470 AbstractCegarLoop]: Abstraction has 1914 states and 5430 transitions. [2022-03-03 17:50:11,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:11,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 5430 transitions. [2022-03-03 17:50:11,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-03 17:50:11,825 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:11,825 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:11,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-03 17:50:12,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-03-03 17:50:12,039 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:12,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:12,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1563913122, now seen corresponding path program 10 times [2022-03-03 17:50:12,040 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:12,040 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043890765] [2022-03-03 17:50:12,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:12,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:12,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:12,124 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:12,124 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043890765] [2022-03-03 17:50:12,125 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043890765] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:12,125 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134567275] [2022-03-03 17:50:12,125 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:50:12,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:12,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:12,126 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:50:12,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-03 17:50:12,171 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:50:12,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:50:12,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-03 17:50:12,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:12,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:12,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:12,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:12,667 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134567275] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:12,667 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:12,667 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 24 [2022-03-03 17:50:12,667 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54778391] [2022-03-03 17:50:12,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:12,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 17:50:12,668 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:12,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 17:50:12,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2022-03-03 17:50:12,668 INFO L87 Difference]: Start difference. First operand 1914 states and 5430 transitions. Second operand has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:13,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:13,746 INFO L93 Difference]: Finished difference Result 3324 states and 9105 transitions. [2022-03-03 17:50:13,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-03 17:50:13,746 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 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 67 [2022-03-03 17:50:13,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:13,752 INFO L225 Difference]: With dead ends: 3324 [2022-03-03 17:50:13,753 INFO L226 Difference]: Without dead ends: 3273 [2022-03-03 17:50:13,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=647, Invalid=3013, Unknown=0, NotChecked=0, Total=3660 [2022-03-03 17:50:13,754 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 679 mSDsluCounter, 2355 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 2317 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:13,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [679 Valid, 2317 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:50:13,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3273 states. [2022-03-03 17:50:13,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3273 to 2282. [2022-03-03 17:50:13,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2282 states, 2281 states have (on average 2.8540113985094258) internal successors, (6510), 2281 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:13,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2282 states to 2282 states and 6510 transitions. [2022-03-03 17:50:13,809 INFO L78 Accepts]: Start accepts. Automaton has 2282 states and 6510 transitions. Word has length 67 [2022-03-03 17:50:13,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:13,809 INFO L470 AbstractCegarLoop]: Abstraction has 2282 states and 6510 transitions. [2022-03-03 17:50:13,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:13,809 INFO L276 IsEmpty]: Start isEmpty. Operand 2282 states and 6510 transitions. [2022-03-03 17:50:13,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-03 17:50:13,813 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:13,813 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:13,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-03-03 17:50:14,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-03 17:50:14,014 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:14,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:14,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1912541999, now seen corresponding path program 11 times [2022-03-03 17:50:14,014 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:14,015 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140406261] [2022-03-03 17:50:14,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:14,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:14,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:14,073 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:14,073 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:14,073 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140406261] [2022-03-03 17:50:14,073 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140406261] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:14,073 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759622137] [2022-03-03 17:50:14,073 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:50:14,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:14,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:14,075 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:50:14,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-03 17:50:14,126 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:50:14,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:50:14,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 17:50:14,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:14,364 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:14,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:14,549 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:14,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759622137] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:14,549 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:14,549 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-03-03 17:50:14,549 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970282377] [2022-03-03 17:50:14,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:14,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:50:14,549 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:14,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:50:14,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:50:14,550 INFO L87 Difference]: Start difference. First operand 2282 states and 6510 transitions. Second operand has 21 states, 21 states have (on average 5.285714285714286) internal successors, (111), 21 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:14,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:14,925 INFO L93 Difference]: Finished difference Result 3199 states and 8900 transitions. [2022-03-03 17:50:14,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-03 17:50:14,926 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.285714285714286) internal successors, (111), 21 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-03-03 17:50:14,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:14,947 INFO L225 Difference]: With dead ends: 3199 [2022-03-03 17:50:14,947 INFO L226 Difference]: Without dead ends: 3199 [2022-03-03 17:50:14,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 129 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=305, Invalid=885, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 17:50:14,948 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 323 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:14,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 1107 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:50:14,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3199 states. [2022-03-03 17:50:14,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3199 to 2322. [2022-03-03 17:50:14,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2322 states, 2321 states have (on average 2.8694528220594573) internal successors, (6660), 2321 states have internal predecessors, (6660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:14,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2322 states to 2322 states and 6660 transitions. [2022-03-03 17:50:14,987 INFO L78 Accepts]: Start accepts. Automaton has 2322 states and 6660 transitions. Word has length 71 [2022-03-03 17:50:14,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:14,987 INFO L470 AbstractCegarLoop]: Abstraction has 2322 states and 6660 transitions. [2022-03-03 17:50:14,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.285714285714286) internal successors, (111), 21 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:14,987 INFO L276 IsEmpty]: Start isEmpty. Operand 2322 states and 6660 transitions. [2022-03-03 17:50:14,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-03 17:50:14,991 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:14,991 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:15,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-03 17:50:15,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-03 17:50:15,203 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:15,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:15,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1409022455, now seen corresponding path program 12 times [2022-03-03 17:50:15,204 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:15,204 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994266531] [2022-03-03 17:50:15,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:15,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:15,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:15,268 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:15,269 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:15,269 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994266531] [2022-03-03 17:50:15,269 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994266531] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:15,269 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511092636] [2022-03-03 17:50:15,269 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:50:15,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:15,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:15,270 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:50:15,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-03 17:50:15,322 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:50:15,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:50:15,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 17:50:15,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:15,566 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:15,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:15,758 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:15,758 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511092636] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:15,758 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:15,758 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-03-03 17:50:15,759 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739916699] [2022-03-03 17:50:15,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:15,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:50:15,759 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:15,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:50:15,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:50:15,759 INFO L87 Difference]: Start difference. First operand 2322 states and 6660 transitions. Second operand has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:16,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:16,647 INFO L93 Difference]: Finished difference Result 4885 states and 13561 transitions. [2022-03-03 17:50:16,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-03 17:50:16,647 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-03-03 17:50:16,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:16,659 INFO L225 Difference]: With dead ends: 4885 [2022-03-03 17:50:16,659 INFO L226 Difference]: Without dead ends: 4885 [2022-03-03 17:50:16,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 130 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1320 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=869, Invalid=3421, Unknown=0, NotChecked=0, Total=4290 [2022-03-03 17:50:16,661 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 732 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:16,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [732 Valid, 1377 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:50:16,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4885 states. [2022-03-03 17:50:16,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4885 to 2718. [2022-03-03 17:50:16,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2718 states, 2717 states have (on average 2.896209054103791) internal successors, (7869), 2717 states have internal predecessors, (7869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:16,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2718 states to 2718 states and 7869 transitions. [2022-03-03 17:50:16,721 INFO L78 Accepts]: Start accepts. Automaton has 2718 states and 7869 transitions. Word has length 71 [2022-03-03 17:50:16,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:16,721 INFO L470 AbstractCegarLoop]: Abstraction has 2718 states and 7869 transitions. [2022-03-03 17:50:16,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:16,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2718 states and 7869 transitions. [2022-03-03 17:50:16,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-03 17:50:16,726 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:16,726 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:16,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-03 17:50:16,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-03 17:50:16,935 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:16,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:16,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1047027179, now seen corresponding path program 13 times [2022-03-03 17:50:16,936 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:16,936 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977089661] [2022-03-03 17:50:16,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:16,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:16,994 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:16,994 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:16,994 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977089661] [2022-03-03 17:50:16,994 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977089661] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:16,994 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003410572] [2022-03-03 17:50:16,994 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:50:16,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:16,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:16,995 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:50:16,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-03 17:50:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:17,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 17:50:17,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:17,247 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:17,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:17,498 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:17,498 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003410572] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:17,498 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:17,498 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-03-03 17:50:17,498 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106454076] [2022-03-03 17:50:17,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:17,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-03 17:50:17,499 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:17,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-03 17:50:17,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2022-03-03 17:50:17,499 INFO L87 Difference]: Start difference. First operand 2718 states and 7869 transitions. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:18,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:18,075 INFO L93 Difference]: Finished difference Result 4480 states and 12587 transitions. [2022-03-03 17:50:18,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 17:50:18,075 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-03-03 17:50:18,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:18,085 INFO L225 Difference]: With dead ends: 4480 [2022-03-03 17:50:18,085 INFO L226 Difference]: Without dead ends: 4432 [2022-03-03 17:50:18,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=581, Invalid=2175, Unknown=0, NotChecked=0, Total=2756 [2022-03-03 17:50:18,086 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 685 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:18,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [685 Valid, 999 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:50:18,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4432 states. [2022-03-03 17:50:18,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4432 to 3038. [2022-03-03 17:50:18,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3038 states, 3037 states have (on average 2.900559762923938) internal successors, (8809), 3037 states have internal predecessors, (8809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:18,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3038 states to 3038 states and 8809 transitions. [2022-03-03 17:50:18,143 INFO L78 Accepts]: Start accepts. Automaton has 3038 states and 8809 transitions. Word has length 71 [2022-03-03 17:50:18,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:18,143 INFO L470 AbstractCegarLoop]: Abstraction has 3038 states and 8809 transitions. [2022-03-03 17:50:18,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:18,143 INFO L276 IsEmpty]: Start isEmpty. Operand 3038 states and 8809 transitions. [2022-03-03 17:50:18,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-03 17:50:18,148 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:18,148 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:18,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-03 17:50:18,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:18,363 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:18,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:18,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1201955951, now seen corresponding path program 14 times [2022-03-03 17:50:18,364 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:18,364 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639774159] [2022-03-03 17:50:18,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:18,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:18,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:18,475 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:18,476 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:18,476 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639774159] [2022-03-03 17:50:18,476 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639774159] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:18,476 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614431614] [2022-03-03 17:50:18,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:50:18,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:18,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:18,477 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:50:18,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-03 17:50:18,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:50:18,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:50:18,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 17:50:18,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:18,737 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:18,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:18,957 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:18,957 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614431614] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:18,958 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:18,958 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-03-03 17:50:18,958 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297540560] [2022-03-03 17:50:18,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:18,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-03 17:50:18,958 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:18,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-03 17:50:18,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-03-03 17:50:18,959 INFO L87 Difference]: Start difference. First operand 3038 states and 8809 transitions. Second operand has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 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) [2022-03-03 17:50:19,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:19,750 INFO L93 Difference]: Finished difference Result 5199 states and 14824 transitions. [2022-03-03 17:50:19,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 17:50:19,750 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 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 71 [2022-03-03 17:50:19,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:19,761 INFO L225 Difference]: With dead ends: 5199 [2022-03-03 17:50:19,761 INFO L226 Difference]: Without dead ends: 5169 [2022-03-03 17:50:19,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=645, Invalid=2217, Unknown=0, NotChecked=0, Total=2862 [2022-03-03 17:50:19,763 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 540 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 1437 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:19,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [540 Valid, 1437 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:50:19,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5169 states. [2022-03-03 17:50:19,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5169 to 3684. [2022-03-03 17:50:19,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3684 states, 3683 states have (on average 2.920716806950855) internal successors, (10757), 3683 states have internal predecessors, (10757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:19,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 10757 transitions. [2022-03-03 17:50:19,843 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 10757 transitions. Word has length 71 [2022-03-03 17:50:19,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:19,843 INFO L470 AbstractCegarLoop]: Abstraction has 3684 states and 10757 transitions. [2022-03-03 17:50:19,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 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) [2022-03-03 17:50:19,843 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 10757 transitions. [2022-03-03 17:50:19,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-03 17:50:19,850 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:19,850 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:19,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-03 17:50:20,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-03-03 17:50:20,063 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:20,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:20,064 INFO L85 PathProgramCache]: Analyzing trace with hash 952809681, now seen corresponding path program 15 times [2022-03-03 17:50:20,064 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:20,064 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249370736] [2022-03-03 17:50:20,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:20,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:20,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:20,127 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:20,127 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:20,127 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249370736] [2022-03-03 17:50:20,127 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249370736] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:20,127 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815016576] [2022-03-03 17:50:20,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:50:20,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:20,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:20,129 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:50:20,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-03 17:50:20,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:50:20,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:50:20,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 17:50:20,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:20,393 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:20,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:20,610 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:20,610 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815016576] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:20,610 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:20,610 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-03-03 17:50:20,610 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065652030] [2022-03-03 17:50:20,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:20,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:50:20,611 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:20,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:50:20,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:50:20,611 INFO L87 Difference]: Start difference. First operand 3684 states and 10757 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:21,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:21,380 INFO L93 Difference]: Finished difference Result 6071 states and 17298 transitions. [2022-03-03 17:50:21,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 17:50:21,380 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-03-03 17:50:21,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:21,391 INFO L225 Difference]: With dead ends: 6071 [2022-03-03 17:50:21,391 INFO L226 Difference]: Without dead ends: 5981 [2022-03-03 17:50:21,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=641, Invalid=2221, Unknown=0, NotChecked=0, Total=2862 [2022-03-03 17:50:21,392 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 533 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:21,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [533 Valid, 1154 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:50:21,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5981 states. [2022-03-03 17:50:21,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5981 to 3951. [2022-03-03 17:50:21,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3951 states, 3950 states have (on average 2.929873417721519) internal successors, (11573), 3950 states have internal predecessors, (11573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:21,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 11573 transitions. [2022-03-03 17:50:21,469 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 11573 transitions. Word has length 71 [2022-03-03 17:50:21,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:21,469 INFO L470 AbstractCegarLoop]: Abstraction has 3951 states and 11573 transitions. [2022-03-03 17:50:21,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:21,469 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 11573 transitions. [2022-03-03 17:50:21,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-03 17:50:21,476 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:21,476 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:21,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-03 17:50:21,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:21,693 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:21,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:21,693 INFO L85 PathProgramCache]: Analyzing trace with hash 305680217, now seen corresponding path program 16 times [2022-03-03 17:50:21,693 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:21,693 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75249801] [2022-03-03 17:50:21,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:21,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:21,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:21,759 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:21,759 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:21,759 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75249801] [2022-03-03 17:50:21,759 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75249801] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:21,759 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089847515] [2022-03-03 17:50:21,759 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:50:21,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:21,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:21,760 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:50:21,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-03 17:50:21,812 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:50:21,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:50:21,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 17:50:21,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:22,018 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:22,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:22,214 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:22,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089847515] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:22,215 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:22,215 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2022-03-03 17:50:22,215 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209282821] [2022-03-03 17:50:22,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:22,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:50:22,215 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:22,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:50:22,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:50:22,216 INFO L87 Difference]: Start difference. First operand 3951 states and 11573 transitions. Second operand has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:22,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:22,445 INFO L93 Difference]: Finished difference Result 4637 states and 13435 transitions. [2022-03-03 17:50:22,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 17:50:22,445 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-03-03 17:50:22,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:22,454 INFO L225 Difference]: With dead ends: 4637 [2022-03-03 17:50:22,454 INFO L226 Difference]: Without dead ends: 4544 [2022-03-03 17:50:22,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-03-03 17:50:22,455 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 246 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:22,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 773 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:50:22,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4544 states. [2022-03-03 17:50:22,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4544 to 3951. [2022-03-03 17:50:22,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3951 states, 3950 states have (on average 2.9263291139240506) internal successors, (11559), 3950 states have internal predecessors, (11559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:22,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 11559 transitions. [2022-03-03 17:50:22,536 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 11559 transitions. Word has length 71 [2022-03-03 17:50:22,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:22,536 INFO L470 AbstractCegarLoop]: Abstraction has 3951 states and 11559 transitions. [2022-03-03 17:50:22,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:22,537 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 11559 transitions. [2022-03-03 17:50:22,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-03 17:50:22,548 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:22,548 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:22,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-03 17:50:22,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:22,765 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:22,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:22,766 INFO L85 PathProgramCache]: Analyzing trace with hash 443611529, now seen corresponding path program 17 times [2022-03-03 17:50:22,766 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:22,766 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860184482] [2022-03-03 17:50:22,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:22,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:22,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:22,834 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:22,834 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:22,834 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860184482] [2022-03-03 17:50:22,834 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860184482] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:22,834 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830540106] [2022-03-03 17:50:22,834 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:50:22,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:22,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:22,835 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:50:22,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-03 17:50:22,884 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:50:22,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:50:22,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 17:50:22,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:23,098 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:23,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:23,289 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:23,289 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830540106] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:23,289 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:23,289 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-03-03 17:50:23,289 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543641829] [2022-03-03 17:50:23,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:23,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:50:23,289 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:23,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:50:23,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:50:23,290 INFO L87 Difference]: Start difference. First operand 3951 states and 11559 transitions. Second operand has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:23,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:23,997 INFO L93 Difference]: Finished difference Result 5841 states and 16642 transitions. [2022-03-03 17:50:23,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-03 17:50:23,997 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-03-03 17:50:23,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:24,007 INFO L225 Difference]: With dead ends: 5841 [2022-03-03 17:50:24,007 INFO L226 Difference]: Without dead ends: 5841 [2022-03-03 17:50:24,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 130 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=610, Invalid=2696, Unknown=0, NotChecked=0, Total=3306 [2022-03-03 17:50:24,008 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 604 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:24,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [604 Valid, 1194 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:50:24,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5841 states. [2022-03-03 17:50:24,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5841 to 4323. [2022-03-03 17:50:24,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4323 states, 4322 states have (on average 2.93521517815826) internal successors, (12686), 4322 states have internal predecessors, (12686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:24,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4323 states to 4323 states and 12686 transitions. [2022-03-03 17:50:24,110 INFO L78 Accepts]: Start accepts. Automaton has 4323 states and 12686 transitions. Word has length 71 [2022-03-03 17:50:24,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:24,111 INFO L470 AbstractCegarLoop]: Abstraction has 4323 states and 12686 transitions. [2022-03-03 17:50:24,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:24,111 INFO L276 IsEmpty]: Start isEmpty. Operand 4323 states and 12686 transitions. [2022-03-03 17:50:24,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-03 17:50:24,118 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:24,118 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:24,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-03 17:50:24,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-03-03 17:50:24,331 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:24,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:24,332 INFO L85 PathProgramCache]: Analyzing trace with hash -330252237, now seen corresponding path program 18 times [2022-03-03 17:50:24,332 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:24,332 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146615226] [2022-03-03 17:50:24,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:24,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:24,375 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:24,375 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:24,376 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146615226] [2022-03-03 17:50:24,376 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146615226] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:24,376 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148100253] [2022-03-03 17:50:24,376 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:50:24,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:24,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:24,377 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:50:24,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-03 17:50:24,428 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 17:50:24,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:50:24,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 17:50:24,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:24,629 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:24,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:24,827 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:24,828 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148100253] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:24,828 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:24,828 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 23 [2022-03-03 17:50:24,828 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867221097] [2022-03-03 17:50:24,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:24,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-03 17:50:24,828 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:24,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-03 17:50:24,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-03-03 17:50:24,829 INFO L87 Difference]: Start difference. First operand 4323 states and 12686 transitions. Second operand has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 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) [2022-03-03 17:50:25,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:25,569 INFO L93 Difference]: Finished difference Result 6202 states and 17957 transitions. [2022-03-03 17:50:25,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-03 17:50:25,569 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 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 71 [2022-03-03 17:50:25,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:25,580 INFO L225 Difference]: With dead ends: 6202 [2022-03-03 17:50:25,580 INFO L226 Difference]: Without dead ends: 6166 [2022-03-03 17:50:25,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=720, Invalid=2702, Unknown=0, NotChecked=0, Total=3422 [2022-03-03 17:50:25,581 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 783 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:25,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [783 Valid, 1187 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:50:25,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6166 states. [2022-03-03 17:50:25,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6166 to 4571. [2022-03-03 17:50:25,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4571 states, 4570 states have (on average 2.9330415754923416) internal successors, (13404), 4570 states have internal predecessors, (13404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:25,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4571 states to 4571 states and 13404 transitions. [2022-03-03 17:50:25,695 INFO L78 Accepts]: Start accepts. Automaton has 4571 states and 13404 transitions. Word has length 71 [2022-03-03 17:50:25,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:25,695 INFO L470 AbstractCegarLoop]: Abstraction has 4571 states and 13404 transitions. [2022-03-03 17:50:25,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 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) [2022-03-03 17:50:25,695 INFO L276 IsEmpty]: Start isEmpty. Operand 4571 states and 13404 transitions. [2022-03-03 17:50:25,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-03 17:50:25,703 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:25,703 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:25,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-03 17:50:25,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:25,918 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:25,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:25,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1918730893, now seen corresponding path program 19 times [2022-03-03 17:50:25,919 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:25,919 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967617977] [2022-03-03 17:50:25,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:25,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:25,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:25,995 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:25,996 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:25,996 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967617977] [2022-03-03 17:50:25,996 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967617977] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:25,996 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791154001] [2022-03-03 17:50:25,996 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:50:25,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:25,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:25,997 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:50:26,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-03 17:50:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:26,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 17:50:26,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:26,265 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:26,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:26,488 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:26,489 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791154001] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:26,489 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:26,489 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-03-03 17:50:26,489 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115740458] [2022-03-03 17:50:26,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:26,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-03 17:50:26,489 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:26,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-03 17:50:26,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2022-03-03 17:50:26,490 INFO L87 Difference]: Start difference. First operand 4571 states and 13404 transitions. Second operand has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 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) [2022-03-03 17:50:27,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:27,229 INFO L93 Difference]: Finished difference Result 6333 states and 18404 transitions. [2022-03-03 17:50:27,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 17:50:27,230 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 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 71 [2022-03-03 17:50:27,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:27,240 INFO L225 Difference]: With dead ends: 6333 [2022-03-03 17:50:27,240 INFO L226 Difference]: Without dead ends: 6303 [2022-03-03 17:50:27,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=578, Invalid=2284, Unknown=0, NotChecked=0, Total=2862 [2022-03-03 17:50:27,242 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 501 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:27,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 1280 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:50:27,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6303 states. [2022-03-03 17:50:27,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6303 to 4979. [2022-03-03 17:50:27,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4979 states, 4978 states have (on average 2.9373242265970267) internal successors, (14622), 4978 states have internal predecessors, (14622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:27,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4979 states to 4979 states and 14622 transitions. [2022-03-03 17:50:27,320 INFO L78 Accepts]: Start accepts. Automaton has 4979 states and 14622 transitions. Word has length 71 [2022-03-03 17:50:27,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:27,321 INFO L470 AbstractCegarLoop]: Abstraction has 4979 states and 14622 transitions. [2022-03-03 17:50:27,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 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) [2022-03-03 17:50:27,321 INFO L276 IsEmpty]: Start isEmpty. Operand 4979 states and 14622 transitions. [2022-03-03 17:50:27,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-03 17:50:27,328 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:27,328 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:27,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-03 17:50:27,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:27,532 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:27,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:27,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1669584623, now seen corresponding path program 20 times [2022-03-03 17:50:27,532 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:27,532 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101295714] [2022-03-03 17:50:27,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:27,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:27,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:27,636 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:27,636 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:27,637 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101295714] [2022-03-03 17:50:27,637 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101295714] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:27,637 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160426304] [2022-03-03 17:50:27,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:50:27,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:27,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:27,638 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:50:27,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-03 17:50:27,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:50:27,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:50:27,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 17:50:27,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:27,919 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:27,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:28,109 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:28,109 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160426304] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:28,109 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:28,109 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-03-03 17:50:28,110 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622356002] [2022-03-03 17:50:28,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:28,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:50:28,110 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:28,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:50:28,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:50:28,110 INFO L87 Difference]: Start difference. First operand 4979 states and 14622 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:28,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:28,778 INFO L93 Difference]: Finished difference Result 7145 states and 20765 transitions. [2022-03-03 17:50:28,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 17:50:28,779 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-03-03 17:50:28,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:28,790 INFO L225 Difference]: With dead ends: 7145 [2022-03-03 17:50:28,791 INFO L226 Difference]: Without dead ends: 7070 [2022-03-03 17:50:28,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=491, Invalid=1959, Unknown=0, NotChecked=0, Total=2450 [2022-03-03 17:50:28,792 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 391 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:28,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 1053 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:50:28,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7070 states. [2022-03-03 17:50:28,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7070 to 5203. [2022-03-03 17:50:28,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 2.9400230680507495) internal successors, (15294), 5202 states have internal predecessors, (15294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:28,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 15294 transitions. [2022-03-03 17:50:28,870 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 15294 transitions. Word has length 71 [2022-03-03 17:50:28,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:28,871 INFO L470 AbstractCegarLoop]: Abstraction has 5203 states and 15294 transitions. [2022-03-03 17:50:28,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:28,871 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 15294 transitions. [2022-03-03 17:50:28,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-03 17:50:28,878 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:28,878 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:28,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-03 17:50:29,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:29,079 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:29,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:29,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1262000235, now seen corresponding path program 21 times [2022-03-03 17:50:29,079 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:29,079 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951465764] [2022-03-03 17:50:29,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:29,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:29,132 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:29,132 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:29,132 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951465764] [2022-03-03 17:50:29,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951465764] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:29,133 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271049994] [2022-03-03 17:50:29,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:50:29,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:29,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:29,134 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:50:29,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-03 17:50:29,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 17:50:29,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:50:29,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 17:50:29,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:29,456 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:29,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-03 17:50:29,456 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271049994] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:50:29,456 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-03 17:50:29,456 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [9] total 19 [2022-03-03 17:50:29,457 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503645456] [2022-03-03 17:50:29,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:50:29,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-03 17:50:29,457 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:29,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-03 17:50:29,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:50:29,458 INFO L87 Difference]: Start difference. First operand 5203 states and 15294 transitions. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:29,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:29,618 INFO L93 Difference]: Finished difference Result 5353 states and 15640 transitions. [2022-03-03 17:50:29,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 17:50:29,618 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-03-03 17:50:29,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:29,627 INFO L225 Difference]: With dead ends: 5353 [2022-03-03 17:50:29,627 INFO L226 Difference]: Without dead ends: 5134 [2022-03-03 17:50:29,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2022-03-03 17:50:29,628 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 150 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:29,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 820 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:50:29,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5134 states. [2022-03-03 17:50:29,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5134 to 4235. [2022-03-03 17:50:29,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4235 states, 4234 states have (on average 2.8096362777515353) internal successors, (11896), 4234 states have internal predecessors, (11896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:29,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4235 states to 4235 states and 11896 transitions. [2022-03-03 17:50:29,694 INFO L78 Accepts]: Start accepts. Automaton has 4235 states and 11896 transitions. Word has length 71 [2022-03-03 17:50:29,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:29,694 INFO L470 AbstractCegarLoop]: Abstraction has 4235 states and 11896 transitions. [2022-03-03 17:50:29,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:29,694 INFO L276 IsEmpty]: Start isEmpty. Operand 4235 states and 11896 transitions. [2022-03-03 17:50:29,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-03 17:50:29,700 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:29,700 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:29,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-03 17:50:29,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-03-03 17:50:29,908 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:29,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:29,908 INFO L85 PathProgramCache]: Analyzing trace with hash 986982895, now seen corresponding path program 22 times [2022-03-03 17:50:29,908 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:29,908 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256833964] [2022-03-03 17:50:29,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:29,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:29,957 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:50:29,957 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:29,958 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256833964] [2022-03-03 17:50:29,958 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256833964] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:29,958 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618904107] [2022-03-03 17:50:29,958 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:50:29,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:29,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:29,959 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:50:29,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-03 17:50:30,023 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:50:30,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:50:30,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 17:50:30,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:30,238 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:30,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:30,448 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:30,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618904107] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:30,448 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:30,448 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 23 [2022-03-03 17:50:30,449 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909274056] [2022-03-03 17:50:30,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:30,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-03 17:50:30,449 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:30,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-03 17:50:30,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-03-03 17:50:30,449 INFO L87 Difference]: Start difference. First operand 4235 states and 11896 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:30,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:30,932 INFO L93 Difference]: Finished difference Result 5625 states and 15658 transitions. [2022-03-03 17:50:30,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-03 17:50:30,933 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-03-03 17:50:30,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:30,943 INFO L225 Difference]: With dead ends: 5625 [2022-03-03 17:50:30,943 INFO L226 Difference]: Without dead ends: 5595 [2022-03-03 17:50:30,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=404, Invalid=1402, Unknown=0, NotChecked=0, Total=1806 [2022-03-03 17:50:30,944 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 331 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:30,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 1081 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:50:30,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5595 states. [2022-03-03 17:50:31,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5595 to 4387. [2022-03-03 17:50:31,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4387 states, 4386 states have (on average 2.8075695394436844) internal successors, (12314), 4386 states have internal predecessors, (12314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:31,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4387 states to 4387 states and 12314 transitions. [2022-03-03 17:50:31,027 INFO L78 Accepts]: Start accepts. Automaton has 4387 states and 12314 transitions. Word has length 71 [2022-03-03 17:50:31,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:31,027 INFO L470 AbstractCegarLoop]: Abstraction has 4387 states and 12314 transitions. [2022-03-03 17:50:31,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:31,028 INFO L276 IsEmpty]: Start isEmpty. Operand 4387 states and 12314 transitions. [2022-03-03 17:50:31,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-03 17:50:31,036 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:31,036 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:31,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-03 17:50:31,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-03-03 17:50:31,237 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:31,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:31,237 INFO L85 PathProgramCache]: Analyzing trace with hash 2079147621, now seen corresponding path program 23 times [2022-03-03 17:50:31,237 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:31,237 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454007502] [2022-03-03 17:50:31,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:31,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:31,338 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:31,338 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:31,338 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454007502] [2022-03-03 17:50:31,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454007502] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:31,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073292372] [2022-03-03 17:50:31,339 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:50:31,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:31,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:31,340 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:50:31,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-03 17:50:31,396 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:50:31,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:50:31,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 17:50:31,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:31,604 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:31,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:31,802 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:31,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073292372] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:31,803 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:31,803 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-03-03 17:50:31,803 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015365635] [2022-03-03 17:50:31,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:31,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-03 17:50:31,803 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:31,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-03 17:50:31,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2022-03-03 17:50:31,804 INFO L87 Difference]: Start difference. First operand 4387 states and 12314 transitions. Second operand has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:32,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:32,434 INFO L93 Difference]: Finished difference Result 5675 states and 15793 transitions. [2022-03-03 17:50:32,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-03 17:50:32,435 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-03-03 17:50:32,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:32,444 INFO L225 Difference]: With dead ends: 5675 [2022-03-03 17:50:32,444 INFO L226 Difference]: Without dead ends: 5630 [2022-03-03 17:50:32,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=554, Invalid=1896, Unknown=0, NotChecked=0, Total=2450 [2022-03-03 17:50:32,446 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 509 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:32,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [509 Valid, 1026 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:50:32,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5630 states. [2022-03-03 17:50:32,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5630 to 4603. [2022-03-03 17:50:32,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4603 states, 4602 states have (on average 2.809213385484572) internal successors, (12928), 4602 states have internal predecessors, (12928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:32,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4603 states to 4603 states and 12928 transitions. [2022-03-03 17:50:32,524 INFO L78 Accepts]: Start accepts. Automaton has 4603 states and 12928 transitions. Word has length 71 [2022-03-03 17:50:32,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:32,524 INFO L470 AbstractCegarLoop]: Abstraction has 4603 states and 12928 transitions. [2022-03-03 17:50:32,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:32,524 INFO L276 IsEmpty]: Start isEmpty. Operand 4603 states and 12928 transitions. [2022-03-03 17:50:32,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-03 17:50:32,531 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:32,531 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:32,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-03-03 17:50:32,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-03-03 17:50:32,734 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:32,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:32,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1830001351, now seen corresponding path program 24 times [2022-03-03 17:50:32,734 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:32,734 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85727809] [2022-03-03 17:50:32,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:32,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:32,798 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:32,798 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:32,799 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85727809] [2022-03-03 17:50:32,799 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85727809] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:32,799 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090793827] [2022-03-03 17:50:32,799 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:50:32,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:32,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:32,800 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:50:32,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-03 17:50:32,852 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 17:50:32,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:50:32,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 17:50:32,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:33,056 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:33,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:33,239 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:33,239 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090793827] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:33,239 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:33,239 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-03-03 17:50:33,239 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685193211] [2022-03-03 17:50:33,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:33,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:50:33,240 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:33,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:50:33,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:50:33,240 INFO L87 Difference]: Start difference. First operand 4603 states and 12928 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) [2022-03-03 17:50:33,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:33,672 INFO L93 Difference]: Finished difference Result 6110 states and 17105 transitions. [2022-03-03 17:50:33,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-03 17:50:33,673 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 71 [2022-03-03 17:50:33,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:33,682 INFO L225 Difference]: With dead ends: 6110 [2022-03-03 17:50:33,683 INFO L226 Difference]: Without dead ends: 6035 [2022-03-03 17:50:33,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=312, Invalid=1170, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:50:33,683 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 294 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:33,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 907 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:50:33,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6035 states. [2022-03-03 17:50:33,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6035 to 4815. [2022-03-03 17:50:33,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4815 states, 4814 states have (on average 2.8066057332779395) internal successors, (13511), 4814 states have internal predecessors, (13511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:33,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4815 states to 4815 states and 13511 transitions. [2022-03-03 17:50:33,765 INFO L78 Accepts]: Start accepts. Automaton has 4815 states and 13511 transitions. Word has length 71 [2022-03-03 17:50:33,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:33,765 INFO L470 AbstractCegarLoop]: Abstraction has 4815 states and 13511 transitions. [2022-03-03 17:50:33,766 INFO L471 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) [2022-03-03 17:50:33,766 INFO L276 IsEmpty]: Start isEmpty. Operand 4815 states and 13511 transitions. [2022-03-03 17:50:33,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-03 17:50:33,773 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:33,773 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:33,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-03 17:50:33,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:33,987 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:33,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:33,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1147399623, now seen corresponding path program 25 times [2022-03-03 17:50:33,988 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:33,988 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454339172] [2022-03-03 17:50:33,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:33,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:33,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:34,037 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:50:34,037 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:34,037 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454339172] [2022-03-03 17:50:34,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454339172] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:34,038 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157758492] [2022-03-03 17:50:34,038 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:50:34,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:34,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:34,040 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:50:34,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-03 17:50:34,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:34,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 17:50:34,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:34,311 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:34,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:34,505 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:34,505 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157758492] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:34,505 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:34,505 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 23 [2022-03-03 17:50:34,505 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688648152] [2022-03-03 17:50:34,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:34,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-03 17:50:34,506 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:34,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-03 17:50:34,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-03-03 17:50:34,506 INFO L87 Difference]: Start difference. First operand 4815 states and 13511 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:35,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:35,207 INFO L93 Difference]: Finished difference Result 6706 states and 18678 transitions. [2022-03-03 17:50:35,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-03 17:50:35,208 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-03-03 17:50:35,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:35,240 INFO L225 Difference]: With dead ends: 6706 [2022-03-03 17:50:35,240 INFO L226 Difference]: Without dead ends: 6661 [2022-03-03 17:50:35,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=709, Invalid=2597, Unknown=0, NotChecked=0, Total=3306 [2022-03-03 17:50:35,241 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 719 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:35,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [719 Valid, 1104 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:50:35,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6661 states. [2022-03-03 17:50:35,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6661 to 5051. [2022-03-03 17:50:35,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5051 states, 5050 states have (on average 2.8047524752475246) internal successors, (14164), 5050 states have internal predecessors, (14164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:35,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5051 states to 5051 states and 14164 transitions. [2022-03-03 17:50:35,317 INFO L78 Accepts]: Start accepts. Automaton has 5051 states and 14164 transitions. Word has length 71 [2022-03-03 17:50:35,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:35,317 INFO L470 AbstractCegarLoop]: Abstraction has 5051 states and 14164 transitions. [2022-03-03 17:50:35,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:35,317 INFO L276 IsEmpty]: Start isEmpty. Operand 5051 states and 14164 transitions. [2022-03-03 17:50:35,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-03 17:50:35,324 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:35,324 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:35,340 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-03-03 17:50:35,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:35,532 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:35,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:35,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1375488781, now seen corresponding path program 26 times [2022-03-03 17:50:35,533 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:35,533 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532502107] [2022-03-03 17:50:35,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:35,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:35,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:35,606 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:35,606 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:35,606 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532502107] [2022-03-03 17:50:35,606 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532502107] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:35,607 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220131539] [2022-03-03 17:50:35,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:50:35,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:35,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:35,608 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:50:35,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-03 17:50:35,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:50:35,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:50:35,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 17:50:35,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:35,861 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:35,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:36,078 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:36,078 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220131539] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:36,079 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:36,079 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-03-03 17:50:36,079 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692888934] [2022-03-03 17:50:36,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:36,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-03 17:50:36,079 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:36,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-03 17:50:36,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2022-03-03 17:50:36,080 INFO L87 Difference]: Start difference. First operand 5051 states and 14164 transitions. Second operand has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:36,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:36,632 INFO L93 Difference]: Finished difference Result 7248 states and 20072 transitions. [2022-03-03 17:50:36,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 17:50:36,633 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-03-03 17:50:36,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:36,644 INFO L225 Difference]: With dead ends: 7248 [2022-03-03 17:50:36,644 INFO L226 Difference]: Without dead ends: 7218 [2022-03-03 17:50:36,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=581, Invalid=2175, Unknown=0, NotChecked=0, Total=2756 [2022-03-03 17:50:36,646 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 773 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:36,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [773 Valid, 944 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:50:36,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7218 states. [2022-03-03 17:50:36,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7218 to 5391. [2022-03-03 17:50:36,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5391 states, 5390 states have (on average 2.811688311688312) internal successors, (15155), 5390 states have internal predecessors, (15155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:36,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5391 states to 5391 states and 15155 transitions. [2022-03-03 17:50:36,749 INFO L78 Accepts]: Start accepts. Automaton has 5391 states and 15155 transitions. Word has length 71 [2022-03-03 17:50:36,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:36,749 INFO L470 AbstractCegarLoop]: Abstraction has 5391 states and 15155 transitions. [2022-03-03 17:50:36,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:36,749 INFO L276 IsEmpty]: Start isEmpty. Operand 5391 states and 15155 transitions. [2022-03-03 17:50:36,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-03 17:50:36,755 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:36,756 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:36,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-03-03 17:50:36,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-03-03 17:50:36,960 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:36,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:36,960 INFO L85 PathProgramCache]: Analyzing trace with hash -857727561, now seen corresponding path program 27 times [2022-03-03 17:50:36,960 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:36,960 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899635395] [2022-03-03 17:50:36,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:36,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:36,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:37,014 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:37,014 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:37,014 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899635395] [2022-03-03 17:50:37,014 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899635395] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:37,014 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63693416] [2022-03-03 17:50:37,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:50:37,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:37,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:37,016 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:50:37,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-03 17:50:37,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:50:37,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:50:37,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 17:50:37,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:37,312 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:50:37,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:37,567 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:50:37,567 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63693416] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:37,567 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:37,567 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 26 [2022-03-03 17:50:37,567 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105450657] [2022-03-03 17:50:37,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:37,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-03 17:50:37,567 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:37,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-03 17:50:37,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2022-03-03 17:50:37,568 INFO L87 Difference]: Start difference. First operand 5391 states and 15155 transitions. Second operand has 26 states, 26 states have (on average 5.346153846153846) internal successors, (139), 26 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:38,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:38,541 INFO L93 Difference]: Finished difference Result 9102 states and 25605 transitions. [2022-03-03 17:50:38,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-03 17:50:38,541 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.346153846153846) internal successors, (139), 26 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-03-03 17:50:38,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:38,556 INFO L225 Difference]: With dead ends: 9102 [2022-03-03 17:50:38,556 INFO L226 Difference]: Without dead ends: 8985 [2022-03-03 17:50:38,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1254 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1071, Invalid=4185, Unknown=0, NotChecked=0, Total=5256 [2022-03-03 17:50:38,557 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 451 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 2025 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:38,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [451 Valid, 2025 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:50:38,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8985 states. [2022-03-03 17:50:38,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8985 to 6059. [2022-03-03 17:50:38,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6059 states, 6058 states have (on average 2.8081875206338727) internal successors, (17012), 6058 states have internal predecessors, (17012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:38,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6059 states to 6059 states and 17012 transitions. [2022-03-03 17:50:38,679 INFO L78 Accepts]: Start accepts. Automaton has 6059 states and 17012 transitions. Word has length 71 [2022-03-03 17:50:38,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:38,679 INFO L470 AbstractCegarLoop]: Abstraction has 6059 states and 17012 transitions. [2022-03-03 17:50:38,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.346153846153846) internal successors, (139), 26 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:38,679 INFO L276 IsEmpty]: Start isEmpty. Operand 6059 states and 17012 transitions. [2022-03-03 17:50:38,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-03 17:50:38,687 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:38,694 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:38,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-03-03 17:50:38,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-03-03 17:50:38,907 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:38,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:38,908 INFO L85 PathProgramCache]: Analyzing trace with hash -200147572, now seen corresponding path program 28 times [2022-03-03 17:50:38,908 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:38,908 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277628096] [2022-03-03 17:50:38,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:38,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:38,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:38,996 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:50:38,997 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:38,997 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277628096] [2022-03-03 17:50:38,997 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277628096] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:38,997 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514207865] [2022-03-03 17:50:38,997 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:50:38,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:38,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:38,998 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:50:38,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-03 17:50:39,054 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:50:39,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:50:39,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:50:39,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:39,370 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:39,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:39,655 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:50:39,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514207865] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:39,656 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:39,656 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 13] total 31 [2022-03-03 17:50:39,656 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148308787] [2022-03-03 17:50:39,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:39,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:50:39,656 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:39,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:50:39,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=839, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:50:39,657 INFO L87 Difference]: Start difference. First operand 6059 states and 17012 transitions. Second operand has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:42,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:42,626 INFO L93 Difference]: Finished difference Result 9206 states and 25661 transitions. [2022-03-03 17:50:42,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-03-03 17:50:42,626 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 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 75 [2022-03-03 17:50:42,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:42,641 INFO L225 Difference]: With dead ends: 9206 [2022-03-03 17:50:42,642 INFO L226 Difference]: Without dead ends: 9125 [2022-03-03 17:50:42,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 209 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4962 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2504, Invalid=14266, Unknown=0, NotChecked=0, Total=16770 [2022-03-03 17:50:42,644 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 1132 mSDsluCounter, 3759 mSDsCounter, 0 mSdLazyCounter, 1922 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 3759 SdHoareTripleChecker+Invalid, 2031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:42,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 3759 Invalid, 2031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1922 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:50:42,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9125 states. [2022-03-03 17:50:42,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9125 to 4151. [2022-03-03 17:50:42,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4151 states, 4150 states have (on average 2.7672289156626504) internal successors, (11484), 4150 states have internal predecessors, (11484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:42,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4151 states to 4151 states and 11484 transitions. [2022-03-03 17:50:42,736 INFO L78 Accepts]: Start accepts. Automaton has 4151 states and 11484 transitions. Word has length 75 [2022-03-03 17:50:42,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:42,736 INFO L470 AbstractCegarLoop]: Abstraction has 4151 states and 11484 transitions. [2022-03-03 17:50:42,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:42,736 INFO L276 IsEmpty]: Start isEmpty. Operand 4151 states and 11484 transitions. [2022-03-03 17:50:42,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-03 17:50:42,741 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:42,741 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:42,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-03-03 17:50:42,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:42,942 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:42,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:42,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1273828684, now seen corresponding path program 29 times [2022-03-03 17:50:42,942 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:42,943 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682142506] [2022-03-03 17:50:42,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:42,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:43,048 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:50:43,048 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:43,048 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682142506] [2022-03-03 17:50:43,048 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682142506] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:43,048 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532114799] [2022-03-03 17:50:43,048 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:50:43,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:43,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:43,049 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:50:43,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-03 17:50:43,117 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:50:43,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:50:43,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:50:43,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:43,468 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:43,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:43,763 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:43,763 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532114799] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:43,763 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:43,763 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 13] total 31 [2022-03-03 17:50:43,776 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663631195] [2022-03-03 17:50:43,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:43,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:50:43,776 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:43,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:50:43,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:50:43,777 INFO L87 Difference]: Start difference. First operand 4151 states and 11484 transitions. Second operand has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:46,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:46,608 INFO L93 Difference]: Finished difference Result 7678 states and 21127 transitions. [2022-03-03 17:50:46,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-03-03 17:50:46,609 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 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 75 [2022-03-03 17:50:46,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:46,622 INFO L225 Difference]: With dead ends: 7678 [2022-03-03 17:50:46,623 INFO L226 Difference]: Without dead ends: 7582 [2022-03-03 17:50:46,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 201 SyntacticMatches, 1 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5366 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2074, Invalid=15482, Unknown=0, NotChecked=0, Total=17556 [2022-03-03 17:50:46,626 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 779 mSDsluCounter, 3710 mSDsCounter, 0 mSdLazyCounter, 1915 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 3675 SdHoareTripleChecker+Invalid, 2047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:46,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [779 Valid, 3675 Invalid, 2047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1915 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:50:46,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7582 states. [2022-03-03 17:50:46,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7582 to 4999. [2022-03-03 17:50:46,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4999 states, 4998 states have (on average 2.7979191676670667) internal successors, (13984), 4998 states have internal predecessors, (13984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:46,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4999 states to 4999 states and 13984 transitions. [2022-03-03 17:50:46,733 INFO L78 Accepts]: Start accepts. Automaton has 4999 states and 13984 transitions. Word has length 75 [2022-03-03 17:50:46,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:46,733 INFO L470 AbstractCegarLoop]: Abstraction has 4999 states and 13984 transitions. [2022-03-03 17:50:46,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:46,733 INFO L276 IsEmpty]: Start isEmpty. Operand 4999 states and 13984 transitions. [2022-03-03 17:50:46,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-03 17:50:46,740 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:46,740 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:46,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-03-03 17:50:46,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:46,941 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:46,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:46,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1884818372, now seen corresponding path program 30 times [2022-03-03 17:50:46,941 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:46,941 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168119385] [2022-03-03 17:50:46,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:46,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:47,120 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:50:47,120 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:47,120 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168119385] [2022-03-03 17:50:47,120 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168119385] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:47,121 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249187177] [2022-03-03 17:50:47,121 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:50:47,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:47,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:47,122 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:50:47,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-03 17:50:47,178 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 17:50:47,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:50:47,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:50:47,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:47,512 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:47,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:47,821 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:50:47,821 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249187177] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:47,821 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:47,821 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 33 [2022-03-03 17:50:47,821 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454136565] [2022-03-03 17:50:47,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:47,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:50:47,822 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:47,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:50:47,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=951, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:50:47,822 INFO L87 Difference]: Start difference. First operand 4999 states and 13984 transitions. Second operand has 33 states, 33 states have (on average 4.848484848484849) internal successors, (160), 33 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:51,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:51,838 INFO L93 Difference]: Finished difference Result 12901 states and 35852 transitions. [2022-03-03 17:50:51,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-03-03 17:50:51,838 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.848484848484849) internal successors, (160), 33 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-03 17:50:51,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:51,861 INFO L225 Difference]: With dead ends: 12901 [2022-03-03 17:50:51,861 INFO L226 Difference]: Without dead ends: 12766 [2022-03-03 17:50:51,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 212 SyntacticMatches, 1 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6161 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2577, Invalid=16055, Unknown=0, NotChecked=0, Total=18632 [2022-03-03 17:50:51,863 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 1575 mSDsluCounter, 4309 mSDsCounter, 0 mSdLazyCounter, 2365 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 4252 SdHoareTripleChecker+Invalid, 2649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 2365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:51,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1575 Valid, 4252 Invalid, 2649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 2365 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 17:50:51,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12766 states. [2022-03-03 17:50:51,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12766 to 6975. [2022-03-03 17:50:52,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6975 states, 6974 states have (on average 2.810725552050473) internal successors, (19602), 6974 states have internal predecessors, (19602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:52,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6975 states to 6975 states and 19602 transitions. [2022-03-03 17:50:52,020 INFO L78 Accepts]: Start accepts. Automaton has 6975 states and 19602 transitions. Word has length 75 [2022-03-03 17:50:52,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:52,021 INFO L470 AbstractCegarLoop]: Abstraction has 6975 states and 19602 transitions. [2022-03-03 17:50:52,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.848484848484849) internal successors, (160), 33 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:52,021 INFO L276 IsEmpty]: Start isEmpty. Operand 6975 states and 19602 transitions. [2022-03-03 17:50:52,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-03 17:50:52,031 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:52,031 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:52,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-03-03 17:50:52,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:52,237 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:52,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:52,237 INFO L85 PathProgramCache]: Analyzing trace with hash -56449050, now seen corresponding path program 31 times [2022-03-03 17:50:52,237 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:52,237 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040754217] [2022-03-03 17:50:52,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:52,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:52,318 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:50:52,318 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:52,319 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040754217] [2022-03-03 17:50:52,319 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040754217] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:52,319 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478178672] [2022-03-03 17:50:52,319 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:50:52,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:52,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:52,320 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:50:52,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-03 17:50:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:52,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:50:52,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:52,720 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:52,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:52,945 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:50:52,945 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478178672] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:52,945 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:52,945 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 13] total 31 [2022-03-03 17:50:52,945 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375750888] [2022-03-03 17:50:52,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:52,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:50:52,946 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:52,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:50:52,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=842, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:50:52,947 INFO L87 Difference]: Start difference. First operand 6975 states and 19602 transitions. Second operand has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:56,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:56,611 INFO L93 Difference]: Finished difference Result 11417 states and 32014 transitions. [2022-03-03 17:50:56,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-03-03 17:50:56,611 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 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 75 [2022-03-03 17:50:56,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:56,631 INFO L225 Difference]: With dead ends: 11417 [2022-03-03 17:50:56,631 INFO L226 Difference]: Without dead ends: 11321 [2022-03-03 17:50:56,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 246 SyntacticMatches, 2 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9203 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3354, Invalid=24036, Unknown=0, NotChecked=0, Total=27390 [2022-03-03 17:50:56,635 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 949 mSDsluCounter, 4193 mSDsCounter, 0 mSdLazyCounter, 2253 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 4220 SdHoareTripleChecker+Invalid, 2392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 2253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:56,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [949 Valid, 4220 Invalid, 2392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 2253 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:50:56,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11321 states. [2022-03-03 17:50:56,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11321 to 6382. [2022-03-03 17:50:56,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6382 states, 6381 states have (on average 2.8111581256856293) internal successors, (17938), 6381 states have internal predecessors, (17938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:56,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6382 states to 6382 states and 17938 transitions. [2022-03-03 17:50:56,793 INFO L78 Accepts]: Start accepts. Automaton has 6382 states and 17938 transitions. Word has length 75 [2022-03-03 17:50:56,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:56,794 INFO L470 AbstractCegarLoop]: Abstraction has 6382 states and 17938 transitions. [2022-03-03 17:50:56,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:56,794 INFO L276 IsEmpty]: Start isEmpty. Operand 6382 states and 17938 transitions. [2022-03-03 17:50:56,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-03 17:50:56,803 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:56,803 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:56,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-03 17:50:57,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-03-03 17:50:57,020 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:57,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:57,020 INFO L85 PathProgramCache]: Analyzing trace with hash -94636020, now seen corresponding path program 32 times [2022-03-03 17:50:57,020 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:57,020 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603722683] [2022-03-03 17:50:57,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:57,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:57,114 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:50:57,114 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:57,114 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603722683] [2022-03-03 17:50:57,114 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603722683] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:57,114 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638290538] [2022-03-03 17:50:57,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:50:57,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:57,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:57,116 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:50:57,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-03 17:50:57,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:50:57,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:50:57,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:50:57,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:57,537 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:57,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:57,817 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-03 17:50:57,817 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638290538] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:57,817 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:57,817 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 12] total 30 [2022-03-03 17:50:57,817 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375928878] [2022-03-03 17:50:57,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:57,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 17:50:57,818 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:57,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 17:50:57,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=785, Unknown=0, NotChecked=0, Total=870 [2022-03-03 17:50:57,818 INFO L87 Difference]: Start difference. First operand 6382 states and 17938 transitions. Second operand has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:59,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:59,954 INFO L93 Difference]: Finished difference Result 9969 states and 27696 transitions. [2022-03-03 17:50:59,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-03-03 17:50:59,955 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 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 75 [2022-03-03 17:50:59,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:59,972 INFO L225 Difference]: With dead ends: 9969 [2022-03-03 17:50:59,972 INFO L226 Difference]: Without dead ends: 9834 [2022-03-03 17:50:59,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3335 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1560, Invalid=10212, Unknown=0, NotChecked=0, Total=11772 [2022-03-03 17:50:59,974 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 678 mSDsluCounter, 2720 mSDsCounter, 0 mSdLazyCounter, 1443 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 2738 SdHoareTripleChecker+Invalid, 1550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:59,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [678 Valid, 2738 Invalid, 1550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1443 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:50:59,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9834 states. [2022-03-03 17:51:00,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9834 to 6802. [2022-03-03 17:51:00,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6802 states, 6801 states have (on average 2.809733862667255) internal successors, (19109), 6801 states have internal predecessors, (19109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:00,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6802 states to 6802 states and 19109 transitions. [2022-03-03 17:51:00,116 INFO L78 Accepts]: Start accepts. Automaton has 6802 states and 19109 transitions. Word has length 75 [2022-03-03 17:51:00,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:00,116 INFO L470 AbstractCegarLoop]: Abstraction has 6802 states and 19109 transitions. [2022-03-03 17:51:00,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:00,116 INFO L276 IsEmpty]: Start isEmpty. Operand 6802 states and 19109 transitions. [2022-03-03 17:51:00,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-03 17:51:00,126 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:00,126 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:00,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-03-03 17:51:00,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-03-03 17:51:00,331 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:00,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:00,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1124573010, now seen corresponding path program 33 times [2022-03-03 17:51:00,331 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:00,331 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111680996] [2022-03-03 17:51:00,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:00,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:00,427 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:51:00,428 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:00,428 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111680996] [2022-03-03 17:51:00,428 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111680996] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:51:00,428 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423870205] [2022-03-03 17:51:00,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:51:00,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:51:00,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:51:00,429 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:51:00,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-03 17:51:00,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:51:00,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:51:00,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 17:51:00,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:51:00,695 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:51:00,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:51:00,966 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:51:00,966 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423870205] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:51:00,966 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:51:00,966 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 20 [2022-03-03 17:51:00,966 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778405587] [2022-03-03 17:51:00,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:51:00,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:51:00,966 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:00,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:51:00,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:51:00,967 INFO L87 Difference]: Start difference. First operand 6802 states and 19109 transitions. Second operand has 20 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:01,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:01,329 INFO L93 Difference]: Finished difference Result 9433 states and 26308 transitions. [2022-03-03 17:51:01,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-03 17:51:01,330 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 0 states have call successors, (0), 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 75 [2022-03-03 17:51:01,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:01,348 INFO L225 Difference]: With dead ends: 9433 [2022-03-03 17:51:01,348 INFO L226 Difference]: Without dead ends: 9346 [2022-03-03 17:51:01,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 150 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=232, Invalid=1100, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:51:01,349 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 207 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:01,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 1321 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:51:01,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9346 states. [2022-03-03 17:51:01,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9346 to 6070. [2022-03-03 17:51:01,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6070 states, 6069 states have (on average 2.8149612786290987) internal successors, (17084), 6069 states have internal predecessors, (17084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:01,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6070 states to 6070 states and 17084 transitions. [2022-03-03 17:51:01,480 INFO L78 Accepts]: Start accepts. Automaton has 6070 states and 17084 transitions. Word has length 75 [2022-03-03 17:51:01,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:01,480 INFO L470 AbstractCegarLoop]: Abstraction has 6070 states and 17084 transitions. [2022-03-03 17:51:01,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:01,480 INFO L276 IsEmpty]: Start isEmpty. Operand 6070 states and 17084 transitions. [2022-03-03 17:51:01,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-03 17:51:01,487 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:01,487 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:01,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-03 17:51:01,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-03-03 17:51:01,688 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:01,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:01,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1452622918, now seen corresponding path program 34 times [2022-03-03 17:51:01,689 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:01,689 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312647815] [2022-03-03 17:51:01,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:01,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:01,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:01,777 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:51:01,777 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:01,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312647815] [2022-03-03 17:51:01,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312647815] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:51:01,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532425649] [2022-03-03 17:51:01,778 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:51:01,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:51:01,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:51:01,779 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:51:01,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-03 17:51:01,838 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:51:01,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:51:01,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:51:01,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:51:02,152 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:02,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:51:02,443 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:51:02,444 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532425649] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:51:02,444 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:51:02,444 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 13] total 31 [2022-03-03 17:51:02,444 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362531990] [2022-03-03 17:51:02,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:51:02,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:51:02,444 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:02,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:51:02,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=842, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:51:02,445 INFO L87 Difference]: Start difference. First operand 6070 states and 17084 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:05,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:05,870 INFO L93 Difference]: Finished difference Result 9376 states and 26076 transitions. [2022-03-03 17:51:05,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-03-03 17:51:05,870 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-03 17:51:05,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:05,886 INFO L225 Difference]: With dead ends: 9376 [2022-03-03 17:51:05,886 INFO L226 Difference]: Without dead ends: 9253 [2022-03-03 17:51:05,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 240 SyntacticMatches, 1 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8636 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3300, Invalid=22140, Unknown=0, NotChecked=0, Total=25440 [2022-03-03 17:51:05,888 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 1024 mSDsluCounter, 3584 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 3565 SdHoareTripleChecker+Invalid, 2018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:05,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1024 Valid, 3565 Invalid, 2018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1871 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:51:05,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9253 states. [2022-03-03 17:51:05,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9253 to 4848. [2022-03-03 17:51:05,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4848 states, 4847 states have (on average 2.784402723334021) internal successors, (13496), 4847 states have internal predecessors, (13496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:05,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4848 states to 4848 states and 13496 transitions. [2022-03-03 17:51:05,992 INFO L78 Accepts]: Start accepts. Automaton has 4848 states and 13496 transitions. Word has length 75 [2022-03-03 17:51:05,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:05,992 INFO L470 AbstractCegarLoop]: Abstraction has 4848 states and 13496 transitions. [2022-03-03 17:51:05,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:05,993 INFO L276 IsEmpty]: Start isEmpty. Operand 4848 states and 13496 transitions. [2022-03-03 17:51:05,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-03 17:51:05,998 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:05,998 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:06,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-03-03 17:51:06,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-03-03 17:51:06,199 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:06,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:06,199 INFO L85 PathProgramCache]: Analyzing trace with hash -922035642, now seen corresponding path program 35 times [2022-03-03 17:51:06,199 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:06,200 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328120107] [2022-03-03 17:51:06,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:06,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:06,279 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:51:06,280 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:06,280 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328120107] [2022-03-03 17:51:06,280 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328120107] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:51:06,280 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130935655] [2022-03-03 17:51:06,280 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:51:06,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:51:06,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:51:06,281 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:51:06,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-03 17:51:06,337 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 17:51:06,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:51:06,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:51:06,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:51:06,639 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:06,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:51:06,856 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:51:06,857 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130935655] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:51:06,857 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:51:06,857 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 13] total 31 [2022-03-03 17:51:06,857 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484719483] [2022-03-03 17:51:06,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:51:06,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:51:06,857 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:06,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:51:06,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:51:06,859 INFO L87 Difference]: Start difference. First operand 4848 states and 13496 transitions. Second operand has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:08,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:08,876 INFO L93 Difference]: Finished difference Result 6232 states and 17052 transitions. [2022-03-03 17:51:08,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-03-03 17:51:08,878 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 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 75 [2022-03-03 17:51:08,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:08,889 INFO L225 Difference]: With dead ends: 6232 [2022-03-03 17:51:08,889 INFO L226 Difference]: Without dead ends: 6181 [2022-03-03 17:51:08,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 192 SyntacticMatches, 2 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3111 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1525, Invalid=9817, Unknown=0, NotChecked=0, Total=11342 [2022-03-03 17:51:08,891 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 809 mSDsluCounter, 3440 mSDsCounter, 0 mSdLazyCounter, 1732 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 3438 SdHoareTripleChecker+Invalid, 1819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:08,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [809 Valid, 3438 Invalid, 1819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1732 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:51:08,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6181 states. [2022-03-03 17:51:08,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6181 to 5092. [2022-03-03 17:51:08,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5092 states, 5091 states have (on average 2.7929679827145946) internal successors, (14219), 5091 states have internal predecessors, (14219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:08,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5092 states to 5092 states and 14219 transitions. [2022-03-03 17:51:08,969 INFO L78 Accepts]: Start accepts. Automaton has 5092 states and 14219 transitions. Word has length 75 [2022-03-03 17:51:08,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:08,969 INFO L470 AbstractCegarLoop]: Abstraction has 5092 states and 14219 transitions. [2022-03-03 17:51:08,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:08,969 INFO L276 IsEmpty]: Start isEmpty. Operand 5092 states and 14219 transitions. [2022-03-03 17:51:08,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-03 17:51:08,975 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:08,975 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:08,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-03-03 17:51:09,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:51:09,176 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:09,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:09,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1391263278, now seen corresponding path program 36 times [2022-03-03 17:51:09,177 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:09,177 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837474604] [2022-03-03 17:51:09,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:09,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:09,242 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:09,242 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:09,242 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837474604] [2022-03-03 17:51:09,242 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837474604] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:51:09,242 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325146428] [2022-03-03 17:51:09,242 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:51:09,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:51:09,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:51:09,243 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:51:09,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-03 17:51:09,306 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:51:09,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:51:09,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 17:51:09,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:51:09,520 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:51:09,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:51:09,705 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:51:09,705 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325146428] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:51:09,706 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:51:09,706 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-03-03 17:51:09,706 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390946047] [2022-03-03 17:51:09,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:51:09,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 17:51:09,706 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:09,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 17:51:09,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2022-03-03 17:51:09,707 INFO L87 Difference]: Start difference. First operand 5092 states and 14219 transitions. Second operand has 25 states, 25 states have (on average 5.36) internal successors, (134), 25 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:11,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:11,024 INFO L93 Difference]: Finished difference Result 6852 states and 18818 transitions. [2022-03-03 17:51:11,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-03 17:51:11,025 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.36) internal successors, (134), 25 states have internal predecessors, (134), 0 states have call successors, (0), 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 75 [2022-03-03 17:51:11,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:11,037 INFO L225 Difference]: With dead ends: 6852 [2022-03-03 17:51:11,038 INFO L226 Difference]: Without dead ends: 6822 [2022-03-03 17:51:11,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2549 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1802, Invalid=6570, Unknown=0, NotChecked=0, Total=8372 [2022-03-03 17:51:11,039 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 826 mSDsluCounter, 1856 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1828 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:11,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 1828 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:51:11,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6822 states. [2022-03-03 17:51:11,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6822 to 5256. [2022-03-03 17:51:11,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5256 states, 5255 states have (on average 2.7954329210275928) internal successors, (14690), 5255 states have internal predecessors, (14690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:11,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5256 states to 5256 states and 14690 transitions. [2022-03-03 17:51:11,121 INFO L78 Accepts]: Start accepts. Automaton has 5256 states and 14690 transitions. Word has length 75 [2022-03-03 17:51:11,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:11,121 INFO L470 AbstractCegarLoop]: Abstraction has 5256 states and 14690 transitions. [2022-03-03 17:51:11,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.36) internal successors, (134), 25 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:11,121 INFO L276 IsEmpty]: Start isEmpty. Operand 5256 states and 14690 transitions. [2022-03-03 17:51:11,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:51:11,128 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:11,128 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:11,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-03-03 17:51:11,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-03-03 17:51:11,337 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:11,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:11,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1936914827, now seen corresponding path program 37 times [2022-03-03 17:51:11,338 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:11,338 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710304062] [2022-03-03 17:51:11,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:11,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:11,441 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:11,441 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:11,441 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710304062] [2022-03-03 17:51:11,441 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710304062] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:51:11,441 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188056740] [2022-03-03 17:51:11,441 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:51:11,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:51:11,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:51:11,442 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:51:11,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-03 17:51:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:11,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 17:51:11,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:51:11,758 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:11,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:51:11,961 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:11,961 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188056740] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:51:11,961 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:51:11,961 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 29 [2022-03-03 17:51:11,962 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835871972] [2022-03-03 17:51:11,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:51:11,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-03 17:51:11,962 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:11,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-03 17:51:11,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=663, Unknown=0, NotChecked=0, Total=812 [2022-03-03 17:51:11,962 INFO L87 Difference]: Start difference. First operand 5256 states and 14690 transitions. Second operand has 29 states, 29 states have (on average 4.379310344827586) internal successors, (127), 29 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:12,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:12,557 INFO L93 Difference]: Finished difference Result 6563 states and 18110 transitions. [2022-03-03 17:51:12,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-03 17:51:12,557 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.379310344827586) internal successors, (127), 29 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-03 17:51:12,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:12,567 INFO L225 Difference]: With dead ends: 6563 [2022-03-03 17:51:12,568 INFO L226 Difference]: Without dead ends: 6563 [2022-03-03 17:51:12,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=773, Invalid=2533, Unknown=0, NotChecked=0, Total=3306 [2022-03-03 17:51:12,568 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 549 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:12,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 1557 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:51:12,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6563 states. [2022-03-03 17:51:12,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6563 to 5346. [2022-03-03 17:51:12,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5346 states, 5345 states have (on average 2.802806361085126) internal successors, (14981), 5345 states have internal predecessors, (14981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:12,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5346 states to 5346 states and 14981 transitions. [2022-03-03 17:51:12,644 INFO L78 Accepts]: Start accepts. Automaton has 5346 states and 14981 transitions. Word has length 79 [2022-03-03 17:51:12,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:12,644 INFO L470 AbstractCegarLoop]: Abstraction has 5346 states and 14981 transitions. [2022-03-03 17:51:12,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.379310344827586) internal successors, (127), 29 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:12,645 INFO L276 IsEmpty]: Start isEmpty. Operand 5346 states and 14981 transitions. [2022-03-03 17:51:12,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:51:12,650 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:12,650 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:12,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-03-03 17:51:12,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:51:12,851 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:12,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:12,851 INFO L85 PathProgramCache]: Analyzing trace with hash -2100757425, now seen corresponding path program 38 times [2022-03-03 17:51:12,851 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:12,851 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947814471] [2022-03-03 17:51:12,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:12,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:12,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:12,944 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:12,944 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:12,944 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947814471] [2022-03-03 17:51:12,944 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947814471] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:51:12,944 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148655128] [2022-03-03 17:51:12,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:51:12,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:51:12,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:51:12,946 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:51:12,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-03 17:51:13,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:51:13,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:51:13,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 17:51:13,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:51:13,289 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:13,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:51:13,540 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:13,540 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148655128] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:51:13,540 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:51:13,540 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 29 [2022-03-03 17:51:13,540 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054817493] [2022-03-03 17:51:13,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:51:13,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-03 17:51:13,541 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:13,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-03 17:51:13,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=696, Unknown=0, NotChecked=0, Total=812 [2022-03-03 17:51:13,541 INFO L87 Difference]: Start difference. First operand 5346 states and 14981 transitions. Second operand has 29 states, 29 states have (on average 4.310344827586207) internal successors, (125), 29 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) [2022-03-03 17:51:15,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:15,019 INFO L93 Difference]: Finished difference Result 8611 states and 23427 transitions. [2022-03-03 17:51:15,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-03-03 17:51:15,019 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.310344827586207) internal successors, (125), 29 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 79 [2022-03-03 17:51:15,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:15,034 INFO L225 Difference]: With dead ends: 8611 [2022-03-03 17:51:15,034 INFO L226 Difference]: Without dead ends: 8611 [2022-03-03 17:51:15,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4224 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2433, Invalid=9999, Unknown=0, NotChecked=0, Total=12432 [2022-03-03 17:51:15,036 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 915 mSDsluCounter, 2115 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 2121 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:15,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [915 Valid, 2121 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:51:15,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8611 states. [2022-03-03 17:51:15,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8611 to 5558. [2022-03-03 17:51:15,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5558 states, 5557 states have (on average 2.813028612560734) internal successors, (15632), 5557 states have internal predecessors, (15632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:15,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5558 states to 5558 states and 15632 transitions. [2022-03-03 17:51:15,144 INFO L78 Accepts]: Start accepts. Automaton has 5558 states and 15632 transitions. Word has length 79 [2022-03-03 17:51:15,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:15,145 INFO L470 AbstractCegarLoop]: Abstraction has 5558 states and 15632 transitions. [2022-03-03 17:51:15,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.310344827586207) internal successors, (125), 29 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) [2022-03-03 17:51:15,145 INFO L276 IsEmpty]: Start isEmpty. Operand 5558 states and 15632 transitions. [2022-03-03 17:51:15,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:51:15,152 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:15,152 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:15,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-03-03 17:51:15,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:51:15,353 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:15,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:15,353 INFO L85 PathProgramCache]: Analyzing trace with hash -562924017, now seen corresponding path program 39 times [2022-03-03 17:51:15,353 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:15,353 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229860513] [2022-03-03 17:51:15,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:15,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:15,424 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:51:15,424 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:15,424 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229860513] [2022-03-03 17:51:15,424 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229860513] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:51:15,424 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118082480] [2022-03-03 17:51:15,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:51:15,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:51:15,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:51:15,425 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:51:15,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-03 17:51:15,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:51:15,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:51:15,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 17:51:15,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:51:15,747 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-03 17:51:15,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-03 17:51:15,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118082480] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:15,748 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-03 17:51:15,748 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 22 [2022-03-03 17:51:15,748 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285494919] [2022-03-03 17:51:15,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:15,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-03 17:51:15,748 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:15,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-03 17:51:15,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:51:15,749 INFO L87 Difference]: Start difference. First operand 5558 states and 15632 transitions. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:15,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:15,901 INFO L93 Difference]: Finished difference Result 5675 states and 15909 transitions. [2022-03-03 17:51:15,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 17:51:15,901 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 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 79 [2022-03-03 17:51:15,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:15,901 INFO L225 Difference]: With dead ends: 5675 [2022-03-03 17:51:15,902 INFO L226 Difference]: Without dead ends: 0 [2022-03-03 17:51:15,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2022-03-03 17:51:15,902 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 158 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:15,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 682 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:51:15,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-03 17:51:15,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-03 17:51:15,903 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) [2022-03-03 17:51:15,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-03 17:51:15,903 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 79 [2022-03-03 17:51:15,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:15,903 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-03 17:51:15,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:15,903 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-03 17:51:15,903 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-03 17:51:15,905 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-03 17:51:15,906 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-03 17:51:15,906 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-03 17:51:15,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-03-03 17:51:16,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-03-03 17:51:16,109 INFO L732 BasicCegarLoop]: Path program histogram: [39, 2, 2, 1, 1] [2022-03-03 17:51:16,110 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-03 17:51:16,110 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-03 17:51:16,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 05:51:16 BasicIcfg [2022-03-03 17:51:16,112 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-03 17:51:16,112 INFO L158 Benchmark]: Toolchain (without parser) took 81505.40ms. Allocated memory was 221.2MB in the beginning and 694.2MB in the end (delta: 472.9MB). Free memory was 169.7MB in the beginning and 620.9MB in the end (delta: -451.2MB). Peak memory consumption was 22.4MB. Max. memory is 8.0GB. [2022-03-03 17:51:16,112 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 221.2MB. Free memory is still 186.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-03 17:51:16,112 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.20ms. Allocated memory is still 221.2MB. Free memory was 169.4MB in the beginning and 196.3MB in the end (delta: -26.8MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB. [2022-03-03 17:51:16,112 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.14ms. Allocated memory is still 221.2MB. Free memory was 196.3MB in the beginning and 194.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-03 17:51:16,112 INFO L158 Benchmark]: Boogie Preprocessor took 12.02ms. Allocated memory is still 221.2MB. Free memory was 194.7MB in the beginning and 193.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-03 17:51:16,112 INFO L158 Benchmark]: RCFGBuilder took 322.38ms. Allocated memory is still 221.2MB. Free memory was 193.7MB in the beginning and 182.1MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-03 17:51:16,112 INFO L158 Benchmark]: TraceAbstraction took 80973.09ms. Allocated memory was 221.2MB in the beginning and 694.2MB in the end (delta: 472.9MB). Free memory was 181.6MB in the beginning and 620.9MB in the end (delta: -439.2MB). Peak memory consumption was 34.7MB. Max. memory is 8.0GB. [2022-03-03 17:51:16,113 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 221.2MB. Free memory is still 186.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 171.20ms. Allocated memory is still 221.2MB. Free memory was 169.4MB in the beginning and 196.3MB in the end (delta: -26.8MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 23.14ms. Allocated memory is still 221.2MB. Free memory was 196.3MB in the beginning and 194.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 12.02ms. Allocated memory is still 221.2MB. Free memory was 194.7MB in the beginning and 193.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 322.38ms. Allocated memory is still 221.2MB. Free memory was 193.7MB in the beginning and 182.1MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 80973.09ms. Allocated memory was 221.2MB in the beginning and 694.2MB in the end (delta: 472.9MB). Free memory was 181.6MB in the beginning and 620.9MB in the end (delta: -439.2MB). Peak memory consumption was 34.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 70]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 95 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 80.9s, OverallIterations: 45, TraceHistogramMax: 3, PathProgramHistogramMax: 39, EmptinessCheckTime: 0.3s, AutomataDifference: 44.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22676 SdHoareTripleChecker+Valid, 12.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22676 mSDsluCounter, 70671 SdHoareTripleChecker+Invalid, 10.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 69388 mSDsCounter, 2891 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33866 IncrementalHoareTripleChecker+Invalid, 36757 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2891 mSolverCounterUnsat, 5951 mSDtfsCounter, 33866 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8013 GetRequests, 5382 SyntacticMatches, 48 SemanticMatches, 2583 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66381 ImplicationChecksByTransitivity, 36.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6975occurred in iteration=36, InterpolantAutomatonStates: 2078, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.1s AutomataMinimizationTime, 45 MinimizatonAttempts, 68903 StatesRemovedByMinimization, 43 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 21.7s InterpolantComputationTime, 5877 NumberOfCodeBlocks, 5825 NumberOfCodeBlocksAsserted, 126 NumberOfCheckSat, 8326 ConstructedInterpolants, 0 QuantifiedInterpolants, 33388 SizeOfPredicates, 378 NumberOfNonLiveVariables, 5884 ConjunctsInSsa, 593 ConjunctsInUnsatCore, 119 InterpolantComputations, 10 PerfectInterpolantSequences, 458/912 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-03 17:51:16,144 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...