/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/popl20-figure1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-01 15:49:42,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-01 15:49:42,613 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-01 15:49:42,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-01 15:49:42,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-01 15:49:42,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-01 15:49:42,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-01 15:49:42,699 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 [2022-03-01 15:49:42,712 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-01 15:49:42,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-01 15:49:42,712 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-01 15:49:42,713 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-01 15:49:42,713 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-01 15:49:42,713 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-01 15:49:42,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-01 15:49:42,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-01 15:49:42,714 INFO L138 SettingsManager]: * Use SBE=true [2022-03-01 15:49:42,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-01 15:49:42,714 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-01 15:49:42,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-01 15:49:42,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-01 15:49:42,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-01 15:49:42,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-01 15:49:42,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-01 15:49:42,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-01 15:49:42,715 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-01 15:49:42,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-01 15:49:42,719 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-01 15:49:42,719 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-01 15:49:42,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-01 15:49:42,719 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-01 15:49:42,719 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-01 15:49:42,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-01 15:49:42,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 15:49:42,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-01 15:49:42,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-01 15:49:42,721 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-01 15:49:42,721 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-01 15:49:42,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-01 15:49:42,721 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-01 15:49:42,721 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-01 15:49:42,721 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-01 15:49:42,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-01 15:49:42,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-01 15:49:42,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-01 15:49:42,929 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-01 15:49:42,932 INFO L275 PluginConnector]: CDTParser initialized [2022-03-01 15:49:42,933 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-figure1.wvr.c [2022-03-01 15:49:42,979 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33597e39d/2947d9fc177d40548e2b9941f922df22/FLAG17469aaec [2022-03-01 15:49:43,320 INFO L306 CDTParser]: Found 1 translation units. [2022-03-01 15:49:43,321 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure1.wvr.c [2022-03-01 15:49:43,325 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33597e39d/2947d9fc177d40548e2b9941f922df22/FLAG17469aaec [2022-03-01 15:49:43,334 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33597e39d/2947d9fc177d40548e2b9941f922df22 [2022-03-01 15:49:43,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-01 15:49:43,337 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-01 15:49:43,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-01 15:49:43,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-01 15:49:43,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-01 15:49:43,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 03:49:43" (1/1) ... [2022-03-01 15:49:43,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7525267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:49:43, skipping insertion in model container [2022-03-01 15:49:43,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 03:49:43" (1/1) ... [2022-03-01 15:49:43,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-01 15:49:43,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-01 15:49:43,495 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/popl20-figure1.wvr.c[1991,2004] [2022-03-01 15:49:43,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 15:49:43,508 INFO L203 MainTranslator]: Completed pre-run [2022-03-01 15:49:43,522 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/popl20-figure1.wvr.c[1991,2004] [2022-03-01 15:49:43,524 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 15:49:43,537 INFO L208 MainTranslator]: Completed translation [2022-03-01 15:49:43,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:49:43 WrapperNode [2022-03-01 15:49:43,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-01 15:49:43,538 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-01 15:49:43,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-01 15:49:43,538 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-01 15:49:43,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:49:43" (1/1) ... [2022-03-01 15:49:43,548 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:49:43" (1/1) ... [2022-03-01 15:49:43,559 INFO L137 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 68 [2022-03-01 15:49:43,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-01 15:49:43,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-01 15:49:43,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-01 15:49:43,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-01 15:49:43,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:49:43" (1/1) ... [2022-03-01 15:49:43,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:49:43" (1/1) ... [2022-03-01 15:49:43,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:49:43" (1/1) ... [2022-03-01 15:49:43,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:49:43" (1/1) ... [2022-03-01 15:49:43,583 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:49:43" (1/1) ... [2022-03-01 15:49:43,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:49:43" (1/1) ... [2022-03-01 15:49:43,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:49:43" (1/1) ... [2022-03-01 15:49:43,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-01 15:49:43,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-01 15:49:43,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-01 15:49:43,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-01 15:49:43,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:49:43" (1/1) ... [2022-03-01 15:49:43,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 15:49:43,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:49:43,621 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) [2022-03-01 15:49:43,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-01 15:49:43,646 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-01 15:49:43,646 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-01 15:49:43,646 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-01 15:49:43,646 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-01 15:49:43,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-01 15:49:43,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-01 15:49:43,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-01 15:49:43,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-01 15:49:43,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-01 15:49:43,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-01 15:49:43,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-01 15:49:43,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-01 15:49:43,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-01 15:49:43,647 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 [2022-03-01 15:49:43,648 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-01 15:49:43,718 INFO L234 CfgBuilder]: Building ICFG [2022-03-01 15:49:43,719 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-01 15:49:43,837 INFO L275 CfgBuilder]: Performing block encoding [2022-03-01 15:49:43,862 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-01 15:49:43,863 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-01 15:49:43,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 03:49:43 BoogieIcfgContainer [2022-03-01 15:49:43,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-01 15:49:43,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-01 15:49:43,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-01 15:49:43,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-01 15:49:43,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.03 03:49:43" (1/3) ... [2022-03-01 15:49:43,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74eae4c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 03:49:43, skipping insertion in model container [2022-03-01 15:49:43,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:49:43" (2/3) ... [2022-03-01 15:49:43,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74eae4c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 03:49:43, skipping insertion in model container [2022-03-01 15:49:43,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 03:49:43" (3/3) ... [2022-03-01 15:49:43,870 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-figure1.wvr.c [2022-03-01 15:49:43,873 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-01 15:49:43,873 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-01 15:49:43,873 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-01 15:49:43,873 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-01 15:49:43,920 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,920 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,921 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,921 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,922 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,922 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,922 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,935 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,936 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,936 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,936 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,936 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,937 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,937 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,937 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,937 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,937 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,937 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,937 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,937 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,938 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,938 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,938 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,938 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,938 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,939 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,939 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,939 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,939 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,939 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,940 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,940 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,940 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,940 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,940 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,940 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,941 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,941 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,941 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,941 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,941 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,941 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,942 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,942 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,942 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,942 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,942 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,945 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,952 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,953 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,953 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,953 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,953 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,953 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,953 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,954 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,954 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,954 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,954 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,954 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:49:43,958 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-01 15:49:43,991 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-01 15:49:43,999 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 [2022-03-01 15:49:44,000 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-01 15:49:44,007 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 79 places, 77 transitions, 170 flow [2022-03-01 15:49:44,063 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 438 states, 437 states have (on average 2.6727688787185353) internal successors, (1168), 437 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:44,066 INFO L276 IsEmpty]: Start isEmpty. Operand has 438 states, 437 states have (on average 2.6727688787185353) internal successors, (1168), 437 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:44,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-01 15:49:44,083 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:49:44,084 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] [2022-03-01 15:49:44,084 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:49:44,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:49:44,088 INFO L85 PathProgramCache]: Analyzing trace with hash 366020055, now seen corresponding path program 1 times [2022-03-01 15:49:44,094 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:49:44,095 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551530744] [2022-03-01 15:49:44,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:49:44,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:49:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:49:44,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:44,283 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:49:44,284 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551530744] [2022-03-01 15:49:44,284 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551530744] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:49:44,284 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:49:44,285 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-01 15:49:44,286 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256675493] [2022-03-01 15:49:44,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:49:44,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-01 15:49:44,290 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:49:44,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-01 15:49:44,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-01 15:49:44,325 INFO L87 Difference]: Start difference. First operand has 438 states, 437 states have (on average 2.6727688787185353) internal successors, (1168), 437 states have internal predecessors, (1168), 0 states have call successors, (0), 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 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:44,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:49:44,376 INFO L93 Difference]: Finished difference Result 438 states and 1086 transitions. [2022-03-01 15:49:44,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 15:49:44,379 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-03-01 15:49:44,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:49:44,396 INFO L225 Difference]: With dead ends: 438 [2022-03-01 15:49:44,396 INFO L226 Difference]: Without dead ends: 437 [2022-03-01 15:49:44,397 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 [2022-03-01 15:49:44,401 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:49:44,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:49:44,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-03-01 15:49:44,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2022-03-01 15:49:44,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 436 states have (on average 2.488532110091743) internal successors, (1085), 436 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:44,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 1085 transitions. [2022-03-01 15:49:44,470 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 1085 transitions. Word has length 52 [2022-03-01 15:49:44,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:49:44,470 INFO L470 AbstractCegarLoop]: Abstraction has 437 states and 1085 transitions. [2022-03-01 15:49:44,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:44,470 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 1085 transitions. [2022-03-01 15:49:44,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-01 15:49:44,472 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:49:44,473 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] [2022-03-01 15:49:44,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-01 15:49:44,473 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:49:44,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:49:44,474 INFO L85 PathProgramCache]: Analyzing trace with hash 613712183, now seen corresponding path program 1 times [2022-03-01 15:49:44,474 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:49:44,474 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017644178] [2022-03-01 15:49:44,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:49:44,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:49:44,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:49:44,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:44,633 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:49:44,633 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017644178] [2022-03-01 15:49:44,634 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017644178] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:49:44,634 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:49:44,634 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-01 15:49:44,634 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936342608] [2022-03-01 15:49:44,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:49:44,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 15:49:44,635 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:49:44,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 15:49:44,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-01 15:49:44,636 INFO L87 Difference]: Start difference. First operand 437 states and 1085 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:44,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:49:44,694 INFO L93 Difference]: Finished difference Result 599 states and 1457 transitions. [2022-03-01 15:49:44,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-01 15:49:44,695 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-03-01 15:49:44,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:49:44,698 INFO L225 Difference]: With dead ends: 599 [2022-03-01 15:49:44,698 INFO L226 Difference]: Without dead ends: 485 [2022-03-01 15:49:44,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 15:49:44,699 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 6 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:49:44,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 201 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:49:44,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-03-01 15:49:44,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 473. [2022-03-01 15:49:44,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 2.472457627118644) internal successors, (1167), 472 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:44,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 1167 transitions. [2022-03-01 15:49:44,714 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 1167 transitions. Word has length 52 [2022-03-01 15:49:44,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:49:44,715 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 1167 transitions. [2022-03-01 15:49:44,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:44,715 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 1167 transitions. [2022-03-01 15:49:44,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-01 15:49:44,717 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:49:44,717 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] [2022-03-01 15:49:44,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-01 15:49:44,717 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:49:44,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:49:44,718 INFO L85 PathProgramCache]: Analyzing trace with hash -60987315, now seen corresponding path program 1 times [2022-03-01 15:49:44,718 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:49:44,718 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364129744] [2022-03-01 15:49:44,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:49:44,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:49:44,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:49:44,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:44,816 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:49:44,816 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364129744] [2022-03-01 15:49:44,816 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364129744] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:49:44,816 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:49:44,816 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-01 15:49:44,817 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203964557] [2022-03-01 15:49:44,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:49:44,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 15:49:44,817 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:49:44,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 15:49:44,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-01 15:49:44,818 INFO L87 Difference]: Start difference. First operand 473 states and 1167 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:44,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:49:44,864 INFO L93 Difference]: Finished difference Result 609 states and 1524 transitions. [2022-03-01 15:49:44,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-01 15:49:44,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-03-01 15:49:44,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:49:44,867 INFO L225 Difference]: With dead ends: 609 [2022-03-01 15:49:44,867 INFO L226 Difference]: Without dead ends: 609 [2022-03-01 15:49:44,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-01 15:49:44,869 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 49 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:49:44,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 207 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:49:44,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-03-01 15:49:44,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 505. [2022-03-01 15:49:44,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 504 states have (on average 2.4722222222222223) internal successors, (1246), 504 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:44,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 1246 transitions. [2022-03-01 15:49:44,884 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 1246 transitions. Word has length 57 [2022-03-01 15:49:44,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:49:44,884 INFO L470 AbstractCegarLoop]: Abstraction has 505 states and 1246 transitions. [2022-03-01 15:49:44,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:44,884 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 1246 transitions. [2022-03-01 15:49:44,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-01 15:49:44,886 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:49:44,886 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] [2022-03-01 15:49:44,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-01 15:49:44,886 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:49:44,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:49:44,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1396697041, now seen corresponding path program 2 times [2022-03-01 15:49:44,888 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:49:44,888 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644120377] [2022-03-01 15:49:44,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:49:44,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:49:44,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:49:44,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:44,957 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:49:44,958 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644120377] [2022-03-01 15:49:44,958 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644120377] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:49:44,958 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:49:44,958 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 15:49:44,958 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831034482] [2022-03-01 15:49:44,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:49:44,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-01 15:49:44,959 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:49:44,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-01 15:49:44,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-01 15:49:44,960 INFO L87 Difference]: Start difference. First operand 505 states and 1246 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:45,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:49:45,068 INFO L93 Difference]: Finished difference Result 749 states and 1900 transitions. [2022-03-01 15:49:45,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-01 15:49:45,070 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-03-01 15:49:45,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:49:45,074 INFO L225 Difference]: With dead ends: 749 [2022-03-01 15:49:45,074 INFO L226 Difference]: Without dead ends: 749 [2022-03-01 15:49:45,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-01 15:49:45,087 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 64 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:49:45,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 293 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:49:45,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-03-01 15:49:45,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 532. [2022-03-01 15:49:45,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 531 states have (on average 2.48210922787194) internal successors, (1318), 531 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:45,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 1318 transitions. [2022-03-01 15:49:45,101 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 1318 transitions. Word has length 57 [2022-03-01 15:49:45,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:49:45,101 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 1318 transitions. [2022-03-01 15:49:45,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:45,101 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 1318 transitions. [2022-03-01 15:49:45,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-01 15:49:45,103 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:49:45,103 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] [2022-03-01 15:49:45,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-01 15:49:45,103 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:49:45,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:49:45,104 INFO L85 PathProgramCache]: Analyzing trace with hash 467447237, now seen corresponding path program 3 times [2022-03-01 15:49:45,104 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:49:45,104 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187317906] [2022-03-01 15:49:45,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:49:45,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:49:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:49:45,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:45,194 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:49:45,194 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187317906] [2022-03-01 15:49:45,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187317906] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:49:45,194 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:49:45,194 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 15:49:45,194 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080154044] [2022-03-01 15:49:45,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:49:45,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-01 15:49:45,195 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:49:45,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-01 15:49:45,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-01 15:49:45,195 INFO L87 Difference]: Start difference. First operand 532 states and 1318 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:45,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:49:45,265 INFO L93 Difference]: Finished difference Result 784 states and 1994 transitions. [2022-03-01 15:49:45,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 15:49:45,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-03-01 15:49:45,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:49:45,276 INFO L225 Difference]: With dead ends: 784 [2022-03-01 15:49:45,276 INFO L226 Difference]: Without dead ends: 784 [2022-03-01 15:49:45,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-01 15:49:45,284 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 113 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:49:45,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 233 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:49:45,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2022-03-01 15:49:45,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 512. [2022-03-01 15:49:45,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 2.4892367906066535) internal successors, (1272), 511 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:45,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 1272 transitions. [2022-03-01 15:49:45,301 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 1272 transitions. Word has length 57 [2022-03-01 15:49:45,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:49:45,301 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 1272 transitions. [2022-03-01 15:49:45,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:45,301 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 1272 transitions. [2022-03-01 15:49:45,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-01 15:49:45,303 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:49:45,304 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] [2022-03-01 15:49:45,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-01 15:49:45,304 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:49:45,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:49:45,305 INFO L85 PathProgramCache]: Analyzing trace with hash 698420085, now seen corresponding path program 4 times [2022-03-01 15:49:45,305 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:49:45,305 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425538876] [2022-03-01 15:49:45,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:49:45,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:49:45,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:49:45,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:45,383 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:49:45,383 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425538876] [2022-03-01 15:49:45,384 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425538876] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:49:45,384 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:49:45,384 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-01 15:49:45,384 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452905895] [2022-03-01 15:49:45,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:49:45,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 15:49:45,384 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:49:45,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 15:49:45,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-01 15:49:45,385 INFO L87 Difference]: Start difference. First operand 512 states and 1272 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:45,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:49:45,429 INFO L93 Difference]: Finished difference Result 712 states and 1789 transitions. [2022-03-01 15:49:45,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-01 15:49:45,430 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-03-01 15:49:45,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:49:45,433 INFO L225 Difference]: With dead ends: 712 [2022-03-01 15:49:45,433 INFO L226 Difference]: Without dead ends: 700 [2022-03-01 15:49:45,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-01 15:49:45,435 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 40 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:49:45,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 150 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:49:45,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2022-03-01 15:49:45,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 516. [2022-03-01 15:49:45,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 515 states have (on average 2.49126213592233) internal successors, (1283), 515 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:45,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 1283 transitions. [2022-03-01 15:49:45,448 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 1283 transitions. Word has length 57 [2022-03-01 15:49:45,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:49:45,450 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 1283 transitions. [2022-03-01 15:49:45,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:45,450 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 1283 transitions. [2022-03-01 15:49:45,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-01 15:49:45,451 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:49:45,452 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] [2022-03-01 15:49:45,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-01 15:49:45,452 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:49:45,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:49:45,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1462366689, now seen corresponding path program 5 times [2022-03-01 15:49:45,453 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:49:45,453 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692855281] [2022-03-01 15:49:45,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:49:45,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:49:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:49:45,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:45,531 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:49:45,531 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692855281] [2022-03-01 15:49:45,531 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692855281] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:49:45,531 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:49:45,531 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-01 15:49:45,531 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770403192] [2022-03-01 15:49:45,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:49:45,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 15:49:45,532 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:49:45,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 15:49:45,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-01 15:49:45,532 INFO L87 Difference]: Start difference. First operand 516 states and 1283 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:45,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:49:45,574 INFO L93 Difference]: Finished difference Result 664 states and 1669 transitions. [2022-03-01 15:49:45,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-01 15:49:45,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-03-01 15:49:45,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:49:45,577 INFO L225 Difference]: With dead ends: 664 [2022-03-01 15:49:45,577 INFO L226 Difference]: Without dead ends: 664 [2022-03-01 15:49:45,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-01 15:49:45,578 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 30 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:49:45,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 192 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:49:45,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2022-03-01 15:49:45,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 528. [2022-03-01 15:49:45,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 2.4971537001897532) internal successors, (1316), 527 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:45,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 1316 transitions. [2022-03-01 15:49:45,589 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 1316 transitions. Word has length 57 [2022-03-01 15:49:45,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:49:45,590 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 1316 transitions. [2022-03-01 15:49:45,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:45,590 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 1316 transitions. [2022-03-01 15:49:45,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-01 15:49:45,591 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:49:45,591 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] [2022-03-01 15:49:45,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-01 15:49:45,592 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:49:45,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:49:45,594 INFO L85 PathProgramCache]: Analyzing trace with hash 817865927, now seen corresponding path program 6 times [2022-03-01 15:49:45,594 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:49:45,594 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373805351] [2022-03-01 15:49:45,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:49:45,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:49:45,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:49:45,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:45,685 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:49:45,685 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373805351] [2022-03-01 15:49:45,685 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373805351] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:49:45,685 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:49:45,685 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 15:49:45,685 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113843079] [2022-03-01 15:49:45,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:49:45,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-01 15:49:45,686 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:49:45,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-01 15:49:45,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-01 15:49:45,686 INFO L87 Difference]: Start difference. First operand 528 states and 1316 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:45,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:49:45,733 INFO L93 Difference]: Finished difference Result 804 states and 2045 transitions. [2022-03-01 15:49:45,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-01 15:49:45,733 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-03-01 15:49:45,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:49:45,736 INFO L225 Difference]: With dead ends: 804 [2022-03-01 15:49:45,736 INFO L226 Difference]: Without dead ends: 804 [2022-03-01 15:49:45,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-01 15:49:45,737 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 56 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:49:45,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 207 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:49:45,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2022-03-01 15:49:45,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 516. [2022-03-01 15:49:45,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 515 states have (on average 2.49126213592233) internal successors, (1283), 515 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:45,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 1283 transitions. [2022-03-01 15:49:45,749 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 1283 transitions. Word has length 57 [2022-03-01 15:49:45,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:49:45,750 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 1283 transitions. [2022-03-01 15:49:45,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:45,750 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 1283 transitions. [2022-03-01 15:49:45,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-01 15:49:45,751 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:49:45,751 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] [2022-03-01 15:49:45,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-01 15:49:45,752 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:49:45,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:49:45,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1733147865, now seen corresponding path program 7 times [2022-03-01 15:49:45,752 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:49:45,752 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062309978] [2022-03-01 15:49:45,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:49:45,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:49:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:49:45,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:45,818 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:49:45,818 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062309978] [2022-03-01 15:49:45,818 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062309978] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:49:45,819 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:49:45,819 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-01 15:49:45,819 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683978191] [2022-03-01 15:49:45,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:49:45,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 15:49:45,819 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:49:45,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 15:49:45,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-01 15:49:45,820 INFO L87 Difference]: Start difference. First operand 516 states and 1283 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:45,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:49:45,859 INFO L93 Difference]: Finished difference Result 782 states and 1967 transitions. [2022-03-01 15:49:45,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-01 15:49:45,859 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-03-01 15:49:45,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:49:45,862 INFO L225 Difference]: With dead ends: 782 [2022-03-01 15:49:45,862 INFO L226 Difference]: Without dead ends: 758 [2022-03-01 15:49:45,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-01 15:49:45,864 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 64 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:49:45,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 211 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:49:45,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2022-03-01 15:49:45,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 504. [2022-03-01 15:49:45,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 503 states have (on average 2.485089463220676) internal successors, (1250), 503 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:45,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 1250 transitions. [2022-03-01 15:49:45,876 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 1250 transitions. Word has length 57 [2022-03-01 15:49:45,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:49:45,876 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 1250 transitions. [2022-03-01 15:49:45,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:45,876 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1250 transitions. [2022-03-01 15:49:45,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-01 15:49:45,877 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:49:45,877 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] [2022-03-01 15:49:45,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-01 15:49:45,877 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:49:45,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:49:45,878 INFO L85 PathProgramCache]: Analyzing trace with hash 534186475, now seen corresponding path program 8 times [2022-03-01 15:49:45,878 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:49:45,878 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524514184] [2022-03-01 15:49:45,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:49:45,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:49:45,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:49:45,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:45,937 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:49:45,937 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524514184] [2022-03-01 15:49:45,937 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524514184] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:49:45,937 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:49:45,937 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-01 15:49:45,937 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502422620] [2022-03-01 15:49:45,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:49:45,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 15:49:45,939 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:49:45,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 15:49:45,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-01 15:49:45,939 INFO L87 Difference]: Start difference. First operand 504 states and 1250 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:46,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:49:46,000 INFO L93 Difference]: Finished difference Result 834 states and 2102 transitions. [2022-03-01 15:49:46,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-01 15:49:46,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-03-01 15:49:46,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:49:46,004 INFO L225 Difference]: With dead ends: 834 [2022-03-01 15:49:46,004 INFO L226 Difference]: Without dead ends: 822 [2022-03-01 15:49:46,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-01 15:49:46,004 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 44 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:49:46,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 238 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:49:46,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-03-01 15:49:46,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 492. [2022-03-01 15:49:46,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 2.478615071283096) internal successors, (1217), 491 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:46,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 1217 transitions. [2022-03-01 15:49:46,032 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 1217 transitions. Word has length 57 [2022-03-01 15:49:46,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:49:46,033 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 1217 transitions. [2022-03-01 15:49:46,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:46,033 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1217 transitions. [2022-03-01 15:49:46,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-01 15:49:46,034 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:49:46,034 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] [2022-03-01 15:49:46,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-01 15:49:46,034 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:49:46,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:49:46,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1298133079, now seen corresponding path program 9 times [2022-03-01 15:49:46,035 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:49:46,035 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094123468] [2022-03-01 15:49:46,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:49:46,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:49:46,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:49:46,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:46,081 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:49:46,081 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094123468] [2022-03-01 15:49:46,081 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094123468] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:49:46,081 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:49:46,081 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-01 15:49:46,081 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687248362] [2022-03-01 15:49:46,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:49:46,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 15:49:46,081 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:49:46,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 15:49:46,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-01 15:49:46,082 INFO L87 Difference]: Start difference. First operand 492 states and 1217 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:46,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:49:46,125 INFO L93 Difference]: Finished difference Result 790 states and 1989 transitions. [2022-03-01 15:49:46,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-01 15:49:46,125 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-03-01 15:49:46,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:49:46,128 INFO L225 Difference]: With dead ends: 790 [2022-03-01 15:49:46,128 INFO L226 Difference]: Without dead ends: 790 [2022-03-01 15:49:46,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-01 15:49:46,129 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 38 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:49:46,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 198 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:49:46,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2022-03-01 15:49:46,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 500. [2022-03-01 15:49:46,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 2.4749498997995993) internal successors, (1235), 499 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:46,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 1235 transitions. [2022-03-01 15:49:46,138 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 1235 transitions. Word has length 57 [2022-03-01 15:49:46,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:49:46,139 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 1235 transitions. [2022-03-01 15:49:46,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:46,139 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 1235 transitions. [2022-03-01 15:49:46,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-01 15:49:46,140 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:49:46,140 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] [2022-03-01 15:49:46,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-01 15:49:46,140 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:49:46,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:49:46,140 INFO L85 PathProgramCache]: Analyzing trace with hash 653632317, now seen corresponding path program 10 times [2022-03-01 15:49:46,140 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:49:46,141 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818688727] [2022-03-01 15:49:46,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:49:46,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:49:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:49:46,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:46,180 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:49:46,180 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818688727] [2022-03-01 15:49:46,180 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818688727] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:49:46,180 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:49:46,180 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 15:49:46,181 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646053960] [2022-03-01 15:49:46,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:49:46,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-01 15:49:46,181 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:49:46,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-01 15:49:46,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-01 15:49:46,182 INFO L87 Difference]: Start difference. First operand 500 states and 1235 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:46,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:49:46,231 INFO L93 Difference]: Finished difference Result 672 states and 1691 transitions. [2022-03-01 15:49:46,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-01 15:49:46,231 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-03-01 15:49:46,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:49:46,234 INFO L225 Difference]: With dead ends: 672 [2022-03-01 15:49:46,234 INFO L226 Difference]: Without dead ends: 672 [2022-03-01 15:49:46,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-01 15:49:46,234 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 41 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:49:46,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 228 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:49:46,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2022-03-01 15:49:46,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 484. [2022-03-01 15:49:46,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 483 states have (on average 2.4658385093167703) internal successors, (1191), 483 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:46,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 1191 transitions. [2022-03-01 15:49:46,244 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 1191 transitions. Word has length 57 [2022-03-01 15:49:46,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:49:46,244 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 1191 transitions. [2022-03-01 15:49:46,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:46,244 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 1191 transitions. [2022-03-01 15:49:46,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-01 15:49:46,245 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:49:46,245 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] [2022-03-01 15:49:46,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-01 15:49:46,245 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:49:46,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:49:46,246 INFO L85 PathProgramCache]: Analyzing trace with hash -786123991, now seen corresponding path program 1 times [2022-03-01 15:49:46,246 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:49:46,246 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277812666] [2022-03-01 15:49:46,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:49:46,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:49:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:49:46,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:49:46,298 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:49:46,298 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277812666] [2022-03-01 15:49:46,298 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277812666] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:49:46,298 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:49:46,298 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 15:49:46,298 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133700714] [2022-03-01 15:49:46,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:49:46,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-01 15:49:46,299 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:49:46,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-01 15:49:46,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-01 15:49:46,299 INFO L87 Difference]: Start difference. First operand 484 states and 1191 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:46,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:49:46,337 INFO L93 Difference]: Finished difference Result 1177 states and 2959 transitions. [2022-03-01 15:49:46,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-01 15:49:46,337 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-03-01 15:49:46,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:49:46,341 INFO L225 Difference]: With dead ends: 1177 [2022-03-01 15:49:46,342 INFO L226 Difference]: Without dead ends: 988 [2022-03-01 15:49:46,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-01 15:49:46,342 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 40 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:49:46,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 343 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:49:46,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2022-03-01 15:49:46,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 854. [2022-03-01 15:49:46,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 2.566236811254396) internal successors, (2189), 853 states have internal predecessors, (2189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:46,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 2189 transitions. [2022-03-01 15:49:46,360 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 2189 transitions. Word has length 62 [2022-03-01 15:49:46,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:49:46,360 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 2189 transitions. [2022-03-01 15:49:46,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:46,361 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 2189 transitions. [2022-03-01 15:49:46,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:49:46,364 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:49:46,364 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:49:46,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-01 15:49:46,364 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:49:46,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:49:46,365 INFO L85 PathProgramCache]: Analyzing trace with hash 2124186139, now seen corresponding path program 2 times [2022-03-01 15:49:46,365 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:49:46,365 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491153550] [2022-03-01 15:49:46,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:49:46,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:49:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:49:46,459 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:46,459 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:49:46,459 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491153550] [2022-03-01 15:49:46,459 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491153550] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:49:46,459 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386439831] [2022-03-01 15:49:46,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:49:46,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:49:46,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:49:46,471 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) [2022-03-01 15:49:46,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-01 15:49:46,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:49:46,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:49:46,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:49:46,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:49:46,867 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:46,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:49:46,990 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:46,990 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386439831] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:49:46,990 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:49:46,990 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-01 15:49:46,990 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430558640] [2022-03-01 15:49:46,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:49:46,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:49:46,991 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:49:46,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:49:46,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:49:46,992 INFO L87 Difference]: Start difference. First operand 854 states and 2189 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:47,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:49:47,859 INFO L93 Difference]: Finished difference Result 4648 states and 12172 transitions. [2022-03-01 15:49:47,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-01 15:49:47,859 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-01 15:49:47,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:49:47,878 INFO L225 Difference]: With dead ends: 4648 [2022-03-01 15:49:47,878 INFO L226 Difference]: Without dead ends: 4513 [2022-03-01 15:49:47,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1228 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=761, Invalid=3145, Unknown=0, NotChecked=0, Total=3906 [2022-03-01 15:49:47,879 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 637 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:49:47,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [637 Valid, 1332 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:49:47,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4513 states. [2022-03-01 15:49:47,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4513 to 1669. [2022-03-01 15:49:47,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1669 states, 1668 states have (on average 2.723621103117506) internal successors, (4543), 1668 states have internal predecessors, (4543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:47,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 4543 transitions. [2022-03-01 15:49:47,944 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 4543 transitions. Word has length 67 [2022-03-01 15:49:47,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:49:47,944 INFO L470 AbstractCegarLoop]: Abstraction has 1669 states and 4543 transitions. [2022-03-01 15:49:47,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:47,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 4543 transitions. [2022-03-01 15:49:47,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:49:47,948 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:49:47,948 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:49:47,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-01 15:49:48,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-03-01 15:49:48,164 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:49:48,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:49:48,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1705001807, now seen corresponding path program 3 times [2022-03-01 15:49:48,164 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:49:48,164 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807466760] [2022-03-01 15:49:48,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:49:48,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:49:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:49:48,246 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:48,246 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:49:48,246 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807466760] [2022-03-01 15:49:48,246 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807466760] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:49:48,246 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392907559] [2022-03-01 15:49:48,246 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:49:48,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:49:48,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:49:48,264 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) [2022-03-01 15:49:48,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-01 15:49:48,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 15:49:48,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:49:48,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:49:48,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:49:48,545 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:48,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:49:48,654 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:49:48,655 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392907559] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:49:48,655 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:49:48,655 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-01 15:49:48,657 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367173970] [2022-03-01 15:49:48,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:49:48,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:49:48,657 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:49:48,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:49:48,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:49:48,658 INFO L87 Difference]: Start difference. First operand 1669 states and 4543 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 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) [2022-03-01 15:49:49,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:49:49,206 INFO L93 Difference]: Finished difference Result 3683 states and 9665 transitions. [2022-03-01 15:49:49,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-01 15:49:49,207 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 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 [2022-03-01 15:49:49,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:49:49,220 INFO L225 Difference]: With dead ends: 3683 [2022-03-01 15:49:49,220 INFO L226 Difference]: Without dead ends: 3635 [2022-03-01 15:49:49,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=458, Invalid=2194, Unknown=0, NotChecked=0, Total=2652 [2022-03-01 15:49:49,221 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 436 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:49:49,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 1556 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:49:49,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3635 states. [2022-03-01 15:49:49,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3635 to 1693. [2022-03-01 15:49:49,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1692 states have (on average 2.7145390070921986) internal successors, (4593), 1692 states have internal predecessors, (4593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:49,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 4593 transitions. [2022-03-01 15:49:49,261 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 4593 transitions. Word has length 67 [2022-03-01 15:49:49,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:49:49,262 INFO L470 AbstractCegarLoop]: Abstraction has 1693 states and 4593 transitions. [2022-03-01 15:49:49,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 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) [2022-03-01 15:49:49,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 4593 transitions. [2022-03-01 15:49:49,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:49:49,265 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:49:49,265 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:49:49,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-01 15:49:49,481 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,SelfDestructingSolverStorable14 [2022-03-01 15:49:49,481 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:49:49,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:49:49,481 INFO L85 PathProgramCache]: Analyzing trace with hash -2041450917, now seen corresponding path program 4 times [2022-03-01 15:49:49,481 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:49:49,482 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058380391] [2022-03-01 15:49:49,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:49:49,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:49:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:49:49,533 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:49,533 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:49:49,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058380391] [2022-03-01 15:49:49,533 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058380391] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:49:49,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764623038] [2022-03-01 15:49:49,533 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:49:49,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:49:49,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:49:49,534 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) [2022-03-01 15:49:49,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-01 15:49:49,583 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:49:49,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:49:49,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:49:49,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:49:49,755 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:49,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:49:49,861 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:49,861 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764623038] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:49:49,861 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:49:49,861 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-01 15:49:49,861 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283408748] [2022-03-01 15:49:49,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:49:49,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:49:49,862 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:49:49,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:49:49,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:49:49,863 INFO L87 Difference]: Start difference. First operand 1693 states and 4593 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:50,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:49:50,929 INFO L93 Difference]: Finished difference Result 6025 states and 16261 transitions. [2022-03-01 15:49:50,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-03-01 15:49:50,930 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-01 15:49:50,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:49:50,947 INFO L225 Difference]: With dead ends: 6025 [2022-03-01 15:49:50,947 INFO L226 Difference]: Without dead ends: 5950 [2022-03-01 15:49:50,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1805 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=994, Invalid=4408, Unknown=0, NotChecked=0, Total=5402 [2022-03-01 15:49:50,949 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 651 mSDsluCounter, 1447 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:49:50,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [651 Valid, 1415 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:49:50,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5950 states. [2022-03-01 15:49:51,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5950 to 2381. [2022-03-01 15:49:51,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2381 states, 2380 states have (on average 2.7668067226890756) internal successors, (6585), 2380 states have internal predecessors, (6585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:51,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 6585 transitions. [2022-03-01 15:49:51,056 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 6585 transitions. Word has length 67 [2022-03-01 15:49:51,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:49:51,056 INFO L470 AbstractCegarLoop]: Abstraction has 2381 states and 6585 transitions. [2022-03-01 15:49:51,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:51,057 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 6585 transitions. [2022-03-01 15:49:51,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:49:51,061 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:49:51,061 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:49:51,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-01 15:49:51,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:49:51,286 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:49:51,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:49:51,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1575671567, now seen corresponding path program 5 times [2022-03-01 15:49:51,287 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:49:51,287 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040098580] [2022-03-01 15:49:51,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:49:51,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:49:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:49:51,350 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:51,350 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:49:51,351 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040098580] [2022-03-01 15:49:51,351 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040098580] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:49:51,351 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818710428] [2022-03-01 15:49:51,351 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:49:51,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:49:51,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:49:51,352 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) [2022-03-01 15:49:51,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-01 15:49:51,411 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 15:49:51,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:49:51,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:49:51,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:49:51,591 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:51,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:49:51,700 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:49:51,700 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818710428] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:49:51,700 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:49:51,700 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-01 15:49:51,701 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426912659] [2022-03-01 15:49:51,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:49:51,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:49:51,701 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:49:51,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:49:51,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:49:51,702 INFO L87 Difference]: Start difference. First operand 2381 states and 6585 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 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) [2022-03-01 15:49:52,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:49:52,466 INFO L93 Difference]: Finished difference Result 4989 states and 13547 transitions. [2022-03-01 15:49:52,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-01 15:49:52,467 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 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 [2022-03-01 15:49:52,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:49:52,479 INFO L225 Difference]: With dead ends: 4989 [2022-03-01 15:49:52,479 INFO L226 Difference]: Without dead ends: 4941 [2022-03-01 15:49:52,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1097 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=608, Invalid=3174, Unknown=0, NotChecked=0, Total=3782 [2022-03-01 15:49:52,481 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 486 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:49:52,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 1292 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:49:52,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4941 states. [2022-03-01 15:49:52,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4941 to 2381. [2022-03-01 15:49:52,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2381 states, 2380 states have (on average 2.7634453781512605) internal successors, (6577), 2380 states have internal predecessors, (6577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:52,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 6577 transitions. [2022-03-01 15:49:52,562 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 6577 transitions. Word has length 67 [2022-03-01 15:49:52,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:49:52,563 INFO L470 AbstractCegarLoop]: Abstraction has 2381 states and 6577 transitions. [2022-03-01 15:49:52,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 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) [2022-03-01 15:49:52,563 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 6577 transitions. [2022-03-01 15:49:52,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:49:52,567 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:49:52,568 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:49:52,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-01 15:49:52,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-01 15:49:52,790 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:49:52,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:49:52,791 INFO L85 PathProgramCache]: Analyzing trace with hash 468749757, now seen corresponding path program 6 times [2022-03-01 15:49:52,791 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:49:52,791 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88519887] [2022-03-01 15:49:52,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:49:52,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:49:52,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:49:52,843 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:52,843 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:49:52,843 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88519887] [2022-03-01 15:49:52,843 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88519887] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:49:52,843 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604426538] [2022-03-01 15:49:52,843 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:49:52,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:49:52,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:49:52,845 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) [2022-03-01 15:49:52,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-01 15:49:52,894 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 15:49:52,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:49:52,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:49:52,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:49:53,055 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:53,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:49:53,174 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:53,174 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604426538] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:49:53,175 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:49:53,175 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-01 15:49:53,175 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294820290] [2022-03-01 15:49:53,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:49:53,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:49:53,176 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:49:53,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:49:53,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:49:53,176 INFO L87 Difference]: Start difference. First operand 2381 states and 6577 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:53,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:49:53,902 INFO L93 Difference]: Finished difference Result 6333 states and 17294 transitions. [2022-03-01 15:49:53,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 15:49:53,902 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 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 [2022-03-01 15:49:53,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:49:53,917 INFO L225 Difference]: With dead ends: 6333 [2022-03-01 15:49:53,918 INFO L226 Difference]: Without dead ends: 6273 [2022-03-01 15:49:53,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=619, Invalid=2573, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 15:49:53,919 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 477 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:49:53,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 1282 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:49:53,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6273 states. [2022-03-01 15:49:54,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6273 to 3265. [2022-03-01 15:49:54,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3265 states, 3264 states have (on average 2.7879901960784315) internal successors, (9100), 3264 states have internal predecessors, (9100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:54,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3265 states to 3265 states and 9100 transitions. [2022-03-01 15:49:54,061 INFO L78 Accepts]: Start accepts. Automaton has 3265 states and 9100 transitions. Word has length 67 [2022-03-01 15:49:54,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:49:54,061 INFO L470 AbstractCegarLoop]: Abstraction has 3265 states and 9100 transitions. [2022-03-01 15:49:54,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:54,061 INFO L276 IsEmpty]: Start isEmpty. Operand 3265 states and 9100 transitions. [2022-03-01 15:49:54,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:49:54,068 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:49:54,068 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:49:54,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-01 15:49:54,283 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,SelfDestructingSolverStorable17 [2022-03-01 15:49:54,284 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:49:54,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:49:54,284 INFO L85 PathProgramCache]: Analyzing trace with hash 934529107, now seen corresponding path program 7 times [2022-03-01 15:49:54,284 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:49:54,284 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851405227] [2022-03-01 15:49:54,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:49:54,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:49:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:49:54,340 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:54,341 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:49:54,341 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851405227] [2022-03-01 15:49:54,341 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851405227] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:49:54,342 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133281582] [2022-03-01 15:49:54,342 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 15:49:54,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:49:54,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:49:54,343 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) [2022-03-01 15:49:54,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-01 15:49:54,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:49:54,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:49:54,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:49:54,581 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:54,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:49:54,698 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:49:54,699 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133281582] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:49:54,699 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:49:54,699 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-01 15:49:54,699 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301277251] [2022-03-01 15:49:54,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:49:54,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:49:54,700 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:49:54,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:49:54,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:49:54,701 INFO L87 Difference]: Start difference. First operand 3265 states and 9100 transitions. Second operand has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 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) [2022-03-01 15:49:55,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:49:55,252 INFO L93 Difference]: Finished difference Result 6231 states and 17042 transitions. [2022-03-01 15:49:55,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 15:49:55,253 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 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 [2022-03-01 15:49:55,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:49:55,270 INFO L225 Difference]: With dead ends: 6231 [2022-03-01 15:49:55,270 INFO L226 Difference]: Without dead ends: 6183 [2022-03-01 15:49:55,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=426, Invalid=1926, Unknown=0, NotChecked=0, Total=2352 [2022-03-01 15:49:55,272 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 501 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:49:55,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 1022 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 15:49:55,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6183 states. [2022-03-01 15:49:55,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6183 to 3265. [2022-03-01 15:49:55,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3265 states, 3264 states have (on average 2.7855392156862746) internal successors, (9092), 3264 states have internal predecessors, (9092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:55,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3265 states to 3265 states and 9092 transitions. [2022-03-01 15:49:55,378 INFO L78 Accepts]: Start accepts. Automaton has 3265 states and 9092 transitions. Word has length 67 [2022-03-01 15:49:55,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:49:55,379 INFO L470 AbstractCegarLoop]: Abstraction has 3265 states and 9092 transitions. [2022-03-01 15:49:55,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 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) [2022-03-01 15:49:55,379 INFO L276 IsEmpty]: Start isEmpty. Operand 3265 states and 9092 transitions. [2022-03-01 15:49:55,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:49:55,385 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:49:55,385 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:49:55,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-01 15:49:55,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:49:55,602 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:49:55,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:49:55,603 INFO L85 PathProgramCache]: Analyzing trace with hash 636834387, now seen corresponding path program 8 times [2022-03-01 15:49:55,603 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:49:55,603 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536974600] [2022-03-01 15:49:55,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:49:55,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:49:55,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:49:55,658 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:55,658 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:49:55,658 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536974600] [2022-03-01 15:49:55,658 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536974600] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:49:55,658 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429008416] [2022-03-01 15:49:55,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:49:55,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:49:55,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:49:55,663 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) [2022-03-01 15:49:55,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-01 15:49:55,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:49:55,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:49:55,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:49:55,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:49:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:55,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:49:55,986 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:55,986 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429008416] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:49:55,986 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:49:55,986 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-03-01 15:49:55,986 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558217288] [2022-03-01 15:49:55,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:49:55,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:49:55,987 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:49:55,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:49:55,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:49:55,988 INFO L87 Difference]: Start difference. First operand 3265 states and 9092 transitions. Second operand has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:56,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:49:56,615 INFO L93 Difference]: Finished difference Result 5910 states and 16220 transitions. [2022-03-01 15:49:56,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-01 15:49:56,616 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 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 [2022-03-01 15:49:56,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:49:56,629 INFO L225 Difference]: With dead ends: 5910 [2022-03-01 15:49:56,629 INFO L226 Difference]: Without dead ends: 5826 [2022-03-01 15:49:56,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=534, Invalid=2658, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 15:49:56,631 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 388 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:49:56,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 1347 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 15:49:56,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5826 states. [2022-03-01 15:49:56,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5826 to 3737. [2022-03-01 15:49:56,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3737 states, 3736 states have (on average 2.7971092077087794) internal successors, (10450), 3736 states have internal predecessors, (10450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:56,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3737 states to 3737 states and 10450 transitions. [2022-03-01 15:49:56,732 INFO L78 Accepts]: Start accepts. Automaton has 3737 states and 10450 transitions. Word has length 67 [2022-03-01 15:49:56,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:49:56,733 INFO L470 AbstractCegarLoop]: Abstraction has 3737 states and 10450 transitions. [2022-03-01 15:49:56,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:56,733 INFO L276 IsEmpty]: Start isEmpty. Operand 3737 states and 10450 transitions. [2022-03-01 15:49:56,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:49:56,739 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:49:56,739 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:49:56,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-01 15:49:56,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:49:56,956 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:49:56,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:49:56,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1982646943, now seen corresponding path program 9 times [2022-03-01 15:49:56,956 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:49:56,957 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332438983] [2022-03-01 15:49:56,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:49:56,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:49:56,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:49:57,019 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:57,020 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:49:57,020 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332438983] [2022-03-01 15:49:57,020 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332438983] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:49:57,020 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189235954] [2022-03-01 15:49:57,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:49:57,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:49:57,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:49:57,021 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) [2022-03-01 15:49:57,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-01 15:49:57,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 15:49:57,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:49:57,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:49:57,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:49:57,246 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:57,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:49:57,354 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:57,354 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189235954] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:49:57,354 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:49:57,354 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-01 15:49:57,354 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770018772] [2022-03-01 15:49:57,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:49:57,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:49:57,355 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:49:57,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:49:57,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:49:57,355 INFO L87 Difference]: Start difference. First operand 3737 states and 10450 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:58,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:49:58,075 INFO L93 Difference]: Finished difference Result 6936 states and 18790 transitions. [2022-03-01 15:49:58,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-01 15:49:58,076 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-01 15:49:58,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:49:58,091 INFO L225 Difference]: With dead ends: 6936 [2022-03-01 15:49:58,092 INFO L226 Difference]: Without dead ends: 6861 [2022-03-01 15:49:58,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1088 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=668, Invalid=2754, Unknown=0, NotChecked=0, Total=3422 [2022-03-01 15:49:58,093 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 649 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:49:58,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [649 Valid, 1308 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:49:58,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6861 states. [2022-03-01 15:49:58,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6861 to 4201. [2022-03-01 15:49:58,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4201 states, 4200 states have (on average 2.8119047619047617) internal successors, (11810), 4200 states have internal predecessors, (11810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:58,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4201 states to 4201 states and 11810 transitions. [2022-03-01 15:49:58,222 INFO L78 Accepts]: Start accepts. Automaton has 4201 states and 11810 transitions. Word has length 67 [2022-03-01 15:49:58,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:49:58,222 INFO L470 AbstractCegarLoop]: Abstraction has 4201 states and 11810 transitions. [2022-03-01 15:49:58,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:58,222 INFO L276 IsEmpty]: Start isEmpty. Operand 4201 states and 11810 transitions. [2022-03-01 15:49:58,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:49:58,230 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:49:58,230 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:49:58,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-01 15:49:58,435 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,SelfDestructingSolverStorable20 [2022-03-01 15:49:58,435 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:49:58,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:49:58,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1846541003, now seen corresponding path program 10 times [2022-03-01 15:49:58,436 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:49:58,436 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992599347] [2022-03-01 15:49:58,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:49:58,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:49:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:49:58,499 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:58,499 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:49:58,499 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992599347] [2022-03-01 15:49:58,499 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992599347] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:49:58,499 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990407220] [2022-03-01 15:49:58,499 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:49:58,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:49:58,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:49:58,516 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) [2022-03-01 15:49:58,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-01 15:49:58,563 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:49:58,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:49:58,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:49:58,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:49:58,736 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:58,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:49:58,847 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:49:58,848 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990407220] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:49:58,848 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:49:58,848 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-01 15:49:58,848 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361400384] [2022-03-01 15:49:58,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:49:58,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:49:58,848 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:49:58,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:49:58,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:49:58,849 INFO L87 Difference]: Start difference. First operand 4201 states and 11810 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 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) [2022-03-01 15:49:59,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:49:59,422 INFO L93 Difference]: Finished difference Result 5926 states and 16266 transitions. [2022-03-01 15:49:59,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-01 15:49:59,423 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 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 [2022-03-01 15:49:59,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:49:59,433 INFO L225 Difference]: With dead ends: 5926 [2022-03-01 15:49:59,433 INFO L226 Difference]: Without dead ends: 5878 [2022-03-01 15:49:59,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 892 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=532, Invalid=2438, Unknown=0, NotChecked=0, Total=2970 [2022-03-01 15:49:59,436 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 486 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:49:59,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 1157 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 15:49:59,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5878 states. [2022-03-01 15:49:59,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5878 to 4201. [2022-03-01 15:49:59,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4201 states, 4200 states have (on average 2.81) internal successors, (11802), 4200 states have internal predecessors, (11802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:59,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4201 states to 4201 states and 11802 transitions. [2022-03-01 15:49:59,507 INFO L78 Accepts]: Start accepts. Automaton has 4201 states and 11802 transitions. Word has length 67 [2022-03-01 15:49:59,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:49:59,507 INFO L470 AbstractCegarLoop]: Abstraction has 4201 states and 11802 transitions. [2022-03-01 15:49:59,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 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) [2022-03-01 15:49:59,507 INFO L276 IsEmpty]: Start isEmpty. Operand 4201 states and 11802 transitions. [2022-03-01 15:49:59,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:49:59,513 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:49:59,514 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:49:59,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-01 15:49:59,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:49:59,730 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:49:59,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:49:59,731 INFO L85 PathProgramCache]: Analyzing trace with hash 197880321, now seen corresponding path program 11 times [2022-03-01 15:49:59,731 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:49:59,731 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466548696] [2022-03-01 15:49:59,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:49:59,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:49:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:49:59,796 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:59,796 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:49:59,796 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466548696] [2022-03-01 15:49:59,796 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466548696] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:49:59,796 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731519671] [2022-03-01 15:49:59,797 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:49:59,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:49:59,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:49:59,798 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) [2022-03-01 15:49:59,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-01 15:49:59,859 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 15:49:59,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:49:59,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:49:59,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:00,009 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:00,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:00,131 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:00,131 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731519671] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:00,131 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:00,131 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-01 15:50:00,131 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320655218] [2022-03-01 15:50:00,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:00,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:50:00,131 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:00,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:50:00,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:50:00,132 INFO L87 Difference]: Start difference. First operand 4201 states and 11802 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:01,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:01,097 INFO L93 Difference]: Finished difference Result 8881 states and 24551 transitions. [2022-03-01 15:50:01,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-03-01 15:50:01,098 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 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 [2022-03-01 15:50:01,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:01,112 INFO L225 Difference]: With dead ends: 8881 [2022-03-01 15:50:01,112 INFO L226 Difference]: Without dead ends: 8821 [2022-03-01 15:50:01,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1839 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=949, Invalid=4453, Unknown=0, NotChecked=0, Total=5402 [2022-03-01 15:50:01,114 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 716 mSDsluCounter, 1384 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:01,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [716 Valid, 1370 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:50:01,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8821 states. [2022-03-01 15:50:01,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8821 to 5229. [2022-03-01 15:50:01,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5229 states, 5228 states have (on average 2.816564651874522) internal successors, (14725), 5228 states have internal predecessors, (14725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:01,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5229 states to 5229 states and 14725 transitions. [2022-03-01 15:50:01,250 INFO L78 Accepts]: Start accepts. Automaton has 5229 states and 14725 transitions. Word has length 67 [2022-03-01 15:50:01,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:01,250 INFO L470 AbstractCegarLoop]: Abstraction has 5229 states and 14725 transitions. [2022-03-01 15:50:01,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:01,250 INFO L276 IsEmpty]: Start isEmpty. Operand 5229 states and 14725 transitions. [2022-03-01 15:50:01,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:50:01,259 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:01,259 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:01,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-01 15:50:01,475 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,SelfDestructingSolverStorable22 [2022-03-01 15:50:01,475 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:01,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:01,476 INFO L85 PathProgramCache]: Analyzing trace with hash 663659671, now seen corresponding path program 12 times [2022-03-01 15:50:01,476 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:01,476 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494874555] [2022-03-01 15:50:01,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:01,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:01,526 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:01,526 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:01,527 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494874555] [2022-03-01 15:50:01,527 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494874555] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:01,527 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929510409] [2022-03-01 15:50:01,527 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:50:01,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:01,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:01,530 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) [2022-03-01 15:50:01,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-01 15:50:01,579 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 15:50:01,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:01,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:50:01,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:01,753 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:01,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:01,867 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:50:01,867 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929510409] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:01,867 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:01,867 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-01 15:50:01,867 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479040438] [2022-03-01 15:50:01,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:01,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:50:01,868 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:01,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:50:01,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:50:01,868 INFO L87 Difference]: Start difference. First operand 5229 states and 14725 transitions. Second operand has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 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) [2022-03-01 15:50:02,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:02,645 INFO L93 Difference]: Finished difference Result 8744 states and 24213 transitions. [2022-03-01 15:50:02,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-01 15:50:02,645 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 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 [2022-03-01 15:50:02,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:02,658 INFO L225 Difference]: With dead ends: 8744 [2022-03-01 15:50:02,658 INFO L226 Difference]: Without dead ends: 8696 [2022-03-01 15:50:02,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1553 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=755, Invalid=3937, Unknown=0, NotChecked=0, Total=4692 [2022-03-01 15:50:02,660 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 721 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:02,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [721 Valid, 1139 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:50:02,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8696 states. [2022-03-01 15:50:02,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8696 to 5229. [2022-03-01 15:50:02,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5229 states, 5228 states have (on average 2.815034429992349) internal successors, (14717), 5228 states have internal predecessors, (14717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:02,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5229 states to 5229 states and 14717 transitions. [2022-03-01 15:50:02,787 INFO L78 Accepts]: Start accepts. Automaton has 5229 states and 14717 transitions. Word has length 67 [2022-03-01 15:50:02,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:02,787 INFO L470 AbstractCegarLoop]: Abstraction has 5229 states and 14717 transitions. [2022-03-01 15:50:02,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 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) [2022-03-01 15:50:02,787 INFO L276 IsEmpty]: Start isEmpty. Operand 5229 states and 14717 transitions. [2022-03-01 15:50:02,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:50:02,795 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:02,795 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:02,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-01 15:50:03,003 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,SelfDestructingSolverStorable23 [2022-03-01 15:50:03,003 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:03,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:03,004 INFO L85 PathProgramCache]: Analyzing trace with hash 365964951, now seen corresponding path program 13 times [2022-03-01 15:50:03,004 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:03,004 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055826044] [2022-03-01 15:50:03,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:03,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:03,058 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:03,059 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:03,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055826044] [2022-03-01 15:50:03,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055826044] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:03,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278000938] [2022-03-01 15:50:03,059 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 15:50:03,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:03,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:03,060 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) [2022-03-01 15:50:03,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-01 15:50:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:03,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:50:03,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:03,271 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:03,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:03,380 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:03,380 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278000938] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:03,380 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:03,380 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-03-01 15:50:03,380 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522080628] [2022-03-01 15:50:03,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:03,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:50:03,381 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:03,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:50:03,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:50:03,381 INFO L87 Difference]: Start difference. First operand 5229 states and 14717 transitions. Second operand has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:04,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:04,294 INFO L93 Difference]: Finished difference Result 9420 states and 26227 transitions. [2022-03-01 15:50:04,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-03-01 15:50:04,295 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 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 [2022-03-01 15:50:04,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:04,312 INFO L225 Difference]: With dead ends: 9420 [2022-03-01 15:50:04,312 INFO L226 Difference]: Without dead ends: 9336 [2022-03-01 15:50:04,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2029 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=934, Invalid=5228, Unknown=0, NotChecked=0, Total=6162 [2022-03-01 15:50:04,314 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 489 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:04,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [489 Valid, 1752 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:50:04,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9336 states. [2022-03-01 15:50:04,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9336 to 5905. [2022-03-01 15:50:04,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5905 states, 5904 states have (on average 2.8245257452574526) internal successors, (16676), 5904 states have internal predecessors, (16676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:04,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5905 states to 5905 states and 16676 transitions. [2022-03-01 15:50:04,446 INFO L78 Accepts]: Start accepts. Automaton has 5905 states and 16676 transitions. Word has length 67 [2022-03-01 15:50:04,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:04,447 INFO L470 AbstractCegarLoop]: Abstraction has 5905 states and 16676 transitions. [2022-03-01 15:50:04,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:04,447 INFO L276 IsEmpty]: Start isEmpty. Operand 5905 states and 16676 transitions. [2022-03-01 15:50:04,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:50:04,456 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:04,456 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:04,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-01 15:50:04,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-03-01 15:50:04,683 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:04,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:04,684 INFO L85 PathProgramCache]: Analyzing trace with hash -297073973, now seen corresponding path program 14 times [2022-03-01 15:50:04,684 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:04,684 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586619393] [2022-03-01 15:50:04,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:04,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:04,729 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:04,730 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:04,730 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586619393] [2022-03-01 15:50:04,730 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586619393] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:04,730 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70091894] [2022-03-01 15:50:04,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:50:04,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:04,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:04,731 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) [2022-03-01 15:50:04,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-01 15:50:04,786 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:50:04,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:04,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:50:04,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:04,922 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:04,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:05,015 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:05,015 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70091894] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:05,015 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:05,015 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-01 15:50:05,015 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978568429] [2022-03-01 15:50:05,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:05,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:50:05,016 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:05,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:50:05,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:50:05,016 INFO L87 Difference]: Start difference. First operand 5905 states and 16676 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:05,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:05,805 INFO L93 Difference]: Finished difference Result 11298 states and 31316 transitions. [2022-03-01 15:50:05,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-01 15:50:05,805 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 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 [2022-03-01 15:50:05,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:05,850 INFO L225 Difference]: With dead ends: 11298 [2022-03-01 15:50:05,850 INFO L226 Difference]: Without dead ends: 11238 [2022-03-01 15:50:05,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1721 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=979, Invalid=3851, Unknown=0, NotChecked=0, Total=4830 [2022-03-01 15:50:05,851 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 675 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:05,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [675 Valid, 1349 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:50:05,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11238 states. [2022-03-01 15:50:05,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11238 to 6861. [2022-03-01 15:50:05,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6861 states, 6860 states have (on average 2.8368804664723033) internal successors, (19461), 6860 states have internal predecessors, (19461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:05,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6861 states to 6861 states and 19461 transitions. [2022-03-01 15:50:05,990 INFO L78 Accepts]: Start accepts. Automaton has 6861 states and 19461 transitions. Word has length 67 [2022-03-01 15:50:05,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:05,990 INFO L470 AbstractCegarLoop]: Abstraction has 6861 states and 19461 transitions. [2022-03-01 15:50:05,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:05,990 INFO L276 IsEmpty]: Start isEmpty. Operand 6861 states and 19461 transitions. [2022-03-01 15:50:06,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:50:06,002 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:06,002 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:06,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-01 15:50:06,215 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,SelfDestructingSolverStorable25 [2022-03-01 15:50:06,215 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:06,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:06,216 INFO L85 PathProgramCache]: Analyzing trace with hash 168705377, now seen corresponding path program 15 times [2022-03-01 15:50:06,216 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:06,216 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079622146] [2022-03-01 15:50:06,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:06,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:06,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:06,270 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:06,270 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:06,270 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079622146] [2022-03-01 15:50:06,270 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079622146] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:06,270 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013132774] [2022-03-01 15:50:06,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:50:06,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:06,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:06,271 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) [2022-03-01 15:50:06,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-01 15:50:06,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 15:50:06,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:06,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:50:06,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:06,505 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:06,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:06,600 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:50:06,601 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013132774] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:06,601 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:06,601 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-01 15:50:06,601 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337352491] [2022-03-01 15:50:06,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:06,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:50:06,601 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:06,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:50:06,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:50:06,602 INFO L87 Difference]: Start difference. First operand 6861 states and 19461 transitions. Second operand has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 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) [2022-03-01 15:50:07,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:07,344 INFO L93 Difference]: Finished difference Result 11121 states and 30889 transitions. [2022-03-01 15:50:07,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-01 15:50:07,344 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 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 [2022-03-01 15:50:07,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:07,362 INFO L225 Difference]: With dead ends: 11121 [2022-03-01 15:50:07,362 INFO L226 Difference]: Without dead ends: 11073 [2022-03-01 15:50:07,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1427 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=762, Invalid=3398, Unknown=0, NotChecked=0, Total=4160 [2022-03-01 15:50:07,364 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 702 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:07,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [702 Valid, 1457 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:50:07,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11073 states. [2022-03-01 15:50:07,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11073 to 6861. [2022-03-01 15:50:07,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6861 states, 6860 states have (on average 2.835714285714286) internal successors, (19453), 6860 states have internal predecessors, (19453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:07,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6861 states to 6861 states and 19453 transitions. [2022-03-01 15:50:07,506 INFO L78 Accepts]: Start accepts. Automaton has 6861 states and 19453 transitions. Word has length 67 [2022-03-01 15:50:07,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:07,506 INFO L470 AbstractCegarLoop]: Abstraction has 6861 states and 19453 transitions. [2022-03-01 15:50:07,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 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) [2022-03-01 15:50:07,506 INFO L276 IsEmpty]: Start isEmpty. Operand 6861 states and 19453 transitions. [2022-03-01 15:50:07,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:50:07,517 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:07,517 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:07,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-01 15:50:07,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:07,726 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:07,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:07,726 INFO L85 PathProgramCache]: Analyzing trace with hash -128989343, now seen corresponding path program 16 times [2022-03-01 15:50:07,726 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:07,726 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034931722] [2022-03-01 15:50:07,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:07,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:07,790 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:07,790 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:07,790 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034931722] [2022-03-01 15:50:07,790 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034931722] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:07,790 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482332629] [2022-03-01 15:50:07,790 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:50:07,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:07,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:07,791 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) [2022-03-01 15:50:07,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-01 15:50:07,840 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:50:07,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:07,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:50:07,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:07,988 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:07,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:08,091 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:08,092 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482332629] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:08,092 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:08,092 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-03-01 15:50:08,092 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39101231] [2022-03-01 15:50:08,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:08,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:50:08,092 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:08,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:50:08,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:50:08,093 INFO L87 Difference]: Start difference. First operand 6861 states and 19453 transitions. Second operand has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:08,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:08,892 INFO L93 Difference]: Finished difference Result 12412 states and 34576 transitions. [2022-03-01 15:50:08,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-03-01 15:50:08,892 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 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 [2022-03-01 15:50:08,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:08,912 INFO L225 Difference]: With dead ends: 12412 [2022-03-01 15:50:08,912 INFO L226 Difference]: Without dead ends: 12328 [2022-03-01 15:50:08,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2006 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=976, Invalid=4876, Unknown=0, NotChecked=0, Total=5852 [2022-03-01 15:50:08,913 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 908 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:08,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [908 Valid, 1088 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 15:50:08,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12328 states. [2022-03-01 15:50:09,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12328 to 7661. [2022-03-01 15:50:09,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7661 states, 7660 states have (on average 2.8460835509138382) internal successors, (21801), 7660 states have internal predecessors, (21801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:09,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7661 states to 7661 states and 21801 transitions. [2022-03-01 15:50:09,048 INFO L78 Accepts]: Start accepts. Automaton has 7661 states and 21801 transitions. Word has length 67 [2022-03-01 15:50:09,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:09,048 INFO L470 AbstractCegarLoop]: Abstraction has 7661 states and 21801 transitions. [2022-03-01 15:50:09,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:09,048 INFO L276 IsEmpty]: Start isEmpty. Operand 7661 states and 21801 transitions. [2022-03-01 15:50:09,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:50:09,058 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:09,058 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:09,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-01 15:50:09,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-03-01 15:50:09,268 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:09,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:09,268 INFO L85 PathProgramCache]: Analyzing trace with hash 104450447, now seen corresponding path program 17 times [2022-03-01 15:50:09,268 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:09,269 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938950985] [2022-03-01 15:50:09,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:09,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:09,320 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:09,321 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:09,321 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938950985] [2022-03-01 15:50:09,321 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938950985] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:09,321 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816215505] [2022-03-01 15:50:09,321 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:50:09,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:09,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:09,322 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) [2022-03-01 15:50:09,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-01 15:50:09,374 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 15:50:09,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:09,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:50:09,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:09,529 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:09,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:09,641 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:09,642 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816215505] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:09,642 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:09,642 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-03-01 15:50:09,642 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205311532] [2022-03-01 15:50:09,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:09,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:50:09,642 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:09,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:50:09,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:50:09,643 INFO L87 Difference]: Start difference. First operand 7661 states and 21801 transitions. Second operand has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:09,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:09,873 INFO L93 Difference]: Finished difference Result 8061 states and 22752 transitions. [2022-03-01 15:50:09,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-01 15:50:09,873 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 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 [2022-03-01 15:50:09,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:09,884 INFO L225 Difference]: With dead ends: 8061 [2022-03-01 15:50:09,884 INFO L226 Difference]: Without dead ends: 8013 [2022-03-01 15:50:09,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2022-03-01 15:50:09,885 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 270 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:09,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 1152 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:50:09,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8013 states. [2022-03-01 15:50:09,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8013 to 7669. [2022-03-01 15:50:09,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7669 states, 7668 states have (on average 2.845983307250913) internal successors, (21823), 7668 states have internal predecessors, (21823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:10,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7669 states to 7669 states and 21823 transitions. [2022-03-01 15:50:10,000 INFO L78 Accepts]: Start accepts. Automaton has 7669 states and 21823 transitions. Word has length 67 [2022-03-01 15:50:10,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:10,001 INFO L470 AbstractCegarLoop]: Abstraction has 7669 states and 21823 transitions. [2022-03-01 15:50:10,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:10,001 INFO L276 IsEmpty]: Start isEmpty. Operand 7669 states and 21823 transitions. [2022-03-01 15:50:10,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:50:10,012 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:10,012 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:10,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-01 15:50:10,228 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,SelfDestructingSolverStorable28 [2022-03-01 15:50:10,229 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:10,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:10,229 INFO L85 PathProgramCache]: Analyzing trace with hash 983231093, now seen corresponding path program 18 times [2022-03-01 15:50:10,229 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:10,229 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113869155] [2022-03-01 15:50:10,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:10,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:10,273 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:10,273 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:10,273 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113869155] [2022-03-01 15:50:10,273 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113869155] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:10,273 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992847569] [2022-03-01 15:50:10,273 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:50:10,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:10,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:10,275 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) [2022-03-01 15:50:10,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-01 15:50:10,336 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-01 15:50:10,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:10,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:50:10,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:10,452 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:10,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:10,537 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:10,537 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992847569] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:10,537 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:10,537 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-03-01 15:50:10,537 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244520439] [2022-03-01 15:50:10,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:10,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-01 15:50:10,537 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:10,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-01 15:50:10,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2022-03-01 15:50:10,538 INFO L87 Difference]: Start difference. First operand 7669 states and 21823 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:11,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:11,392 INFO L93 Difference]: Finished difference Result 10897 states and 30330 transitions. [2022-03-01 15:50:11,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-03-01 15:50:11,392 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 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 [2022-03-01 15:50:11,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:11,410 INFO L225 Difference]: With dead ends: 10897 [2022-03-01 15:50:11,410 INFO L226 Difference]: Without dead ends: 10747 [2022-03-01 15:50:11,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1965 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1172, Invalid=4680, Unknown=0, NotChecked=0, Total=5852 [2022-03-01 15:50:11,412 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 840 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:11,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [840 Valid, 1316 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:50:11,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10747 states. [2022-03-01 15:50:11,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10747 to 8081. [2022-03-01 15:50:11,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8081 states, 8080 states have (on average 2.853960396039604) internal successors, (23060), 8080 states have internal predecessors, (23060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:11,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8081 states to 8081 states and 23060 transitions. [2022-03-01 15:50:11,560 INFO L78 Accepts]: Start accepts. Automaton has 8081 states and 23060 transitions. Word has length 67 [2022-03-01 15:50:11,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:11,560 INFO L470 AbstractCegarLoop]: Abstraction has 8081 states and 23060 transitions. [2022-03-01 15:50:11,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:11,561 INFO L276 IsEmpty]: Start isEmpty. Operand 8081 states and 23060 transitions. [2022-03-01 15:50:11,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:50:11,571 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:11,571 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:11,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-01 15:50:11,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:11,772 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:11,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:11,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1449010443, now seen corresponding path program 19 times [2022-03-01 15:50:11,772 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:11,772 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650288635] [2022-03-01 15:50:11,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:11,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:11,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:11,817 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:11,817 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:11,817 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650288635] [2022-03-01 15:50:11,817 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650288635] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:11,817 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160815479] [2022-03-01 15:50:11,817 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 15:50:11,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:11,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:11,819 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) [2022-03-01 15:50:11,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-01 15:50:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:11,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:50:11,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:11,992 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:11,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:12,093 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:12,094 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160815479] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:12,094 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:12,094 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-03-01 15:50:12,094 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135226201] [2022-03-01 15:50:12,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:12,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-01 15:50:12,095 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:12,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-01 15:50:12,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-03-01 15:50:12,096 INFO L87 Difference]: Start difference. First operand 8081 states and 23060 transitions. Second operand has 17 states, 17 states have (on average 5.411764705882353) internal successors, (92), 17 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:12,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:12,661 INFO L93 Difference]: Finished difference Result 10096 states and 28386 transitions. [2022-03-01 15:50:12,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 15:50:12,662 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.411764705882353) internal successors, (92), 17 states have internal predecessors, (92), 0 states have call successors, (0), 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 [2022-03-01 15:50:12,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:12,677 INFO L225 Difference]: With dead ends: 10096 [2022-03-01 15:50:12,677 INFO L226 Difference]: Without dead ends: 10072 [2022-03-01 15:50:12,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=610, Invalid=2582, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 15:50:12,678 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 596 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:12,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [596 Valid, 1503 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 15:50:12,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10072 states. [2022-03-01 15:50:12,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10072 to 8101. [2022-03-01 15:50:12,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8101 states, 8100 states have (on average 2.8517283950617283) internal successors, (23099), 8100 states have internal predecessors, (23099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:12,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8101 states to 8101 states and 23099 transitions. [2022-03-01 15:50:12,843 INFO L78 Accepts]: Start accepts. Automaton has 8101 states and 23099 transitions. Word has length 67 [2022-03-01 15:50:12,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:12,843 INFO L470 AbstractCegarLoop]: Abstraction has 8101 states and 23099 transitions. [2022-03-01 15:50:12,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.411764705882353) internal successors, (92), 17 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:12,843 INFO L276 IsEmpty]: Start isEmpty. Operand 8101 states and 23099 transitions. [2022-03-01 15:50:12,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:50:12,854 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:12,854 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:12,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-01 15:50:13,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:13,057 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:13,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:13,057 INFO L85 PathProgramCache]: Analyzing trace with hash 277536545, now seen corresponding path program 20 times [2022-03-01 15:50:13,058 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:13,058 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917709526] [2022-03-01 15:50:13,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:13,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:13,104 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:13,104 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:13,104 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917709526] [2022-03-01 15:50:13,104 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917709526] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:13,104 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954078894] [2022-03-01 15:50:13,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:50:13,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:13,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:13,105 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) [2022-03-01 15:50:13,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-01 15:50:13,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:50:13,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:13,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:50:13,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:13,286 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:13,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:13,395 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:13,396 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954078894] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:13,396 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:13,396 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-03-01 15:50:13,396 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991183492] [2022-03-01 15:50:13,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:13,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-01 15:50:13,396 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:13,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-01 15:50:13,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-03-01 15:50:13,397 INFO L87 Difference]: Start difference. First operand 8101 states and 23099 transitions. Second operand has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:13,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:13,707 INFO L93 Difference]: Finished difference Result 8908 states and 25140 transitions. [2022-03-01 15:50:13,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-01 15:50:13,708 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 0 states have call successors, (0), 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 [2022-03-01 15:50:13,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:13,721 INFO L225 Difference]: With dead ends: 8908 [2022-03-01 15:50:13,721 INFO L226 Difference]: Without dead ends: 8848 [2022-03-01 15:50:13,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 129 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=255, Invalid=867, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 15:50:13,722 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 412 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:13,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 910 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 15:50:13,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8848 states. [2022-03-01 15:50:13,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8848 to 7869. [2022-03-01 15:50:13,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7869 states, 7868 states have (on average 2.845577020843925) internal successors, (22389), 7868 states have internal predecessors, (22389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:13,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7869 states to 7869 states and 22389 transitions. [2022-03-01 15:50:13,834 INFO L78 Accepts]: Start accepts. Automaton has 7869 states and 22389 transitions. Word has length 67 [2022-03-01 15:50:13,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:13,834 INFO L470 AbstractCegarLoop]: Abstraction has 7869 states and 22389 transitions. [2022-03-01 15:50:13,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:13,834 INFO L276 IsEmpty]: Start isEmpty. Operand 7869 states and 22389 transitions. [2022-03-01 15:50:13,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:50:13,844 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:13,844 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:13,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-01 15:50:14,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:14,061 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:14,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:14,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1492168501, now seen corresponding path program 21 times [2022-03-01 15:50:14,061 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:14,061 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026894651] [2022-03-01 15:50:14,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:14,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:14,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:14,104 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:14,105 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:14,105 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026894651] [2022-03-01 15:50:14,105 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026894651] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:14,105 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748221043] [2022-03-01 15:50:14,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:50:14,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:14,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:14,106 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) [2022-03-01 15:50:14,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-01 15:50:14,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-01 15:50:14,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:14,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:50:14,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:14,275 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:14,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:14,391 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:14,391 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748221043] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:14,391 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:14,391 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-01 15:50:14,391 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536583704] [2022-03-01 15:50:14,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:14,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:50:14,392 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:14,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:50:14,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:50:14,392 INFO L87 Difference]: Start difference. First operand 7869 states and 22389 transitions. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:15,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:15,653 INFO L93 Difference]: Finished difference Result 13605 states and 38181 transitions. [2022-03-01 15:50:15,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-03-01 15:50:15,653 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 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 [2022-03-01 15:50:15,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:15,676 INFO L225 Difference]: With dead ends: 13605 [2022-03-01 15:50:15,676 INFO L226 Difference]: Without dead ends: 13530 [2022-03-01 15:50:15,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3284 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1601, Invalid=7711, Unknown=0, NotChecked=0, Total=9312 [2022-03-01 15:50:15,678 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 635 mSDsluCounter, 2242 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 2191 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:15,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [635 Valid, 2191 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:50:15,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13530 states. [2022-03-01 15:50:15,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13530 to 8613. [2022-03-01 15:50:15,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8613 states, 8612 states have (on average 2.8503251277287505) internal successors, (24547), 8612 states have internal predecessors, (24547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:15,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8613 states to 8613 states and 24547 transitions. [2022-03-01 15:50:15,833 INFO L78 Accepts]: Start accepts. Automaton has 8613 states and 24547 transitions. Word has length 67 [2022-03-01 15:50:15,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:15,833 INFO L470 AbstractCegarLoop]: Abstraction has 8613 states and 24547 transitions. [2022-03-01 15:50:15,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:15,834 INFO L276 IsEmpty]: Start isEmpty. Operand 8613 states and 24547 transitions. [2022-03-01 15:50:15,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:50:15,845 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:15,846 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:15,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-01 15:50:16,055 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,SelfDestructingSolverStorable32 [2022-03-01 15:50:16,055 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:16,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:16,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1957947851, now seen corresponding path program 22 times [2022-03-01 15:50:16,056 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:16,056 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251700738] [2022-03-01 15:50:16,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:16,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:16,104 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:16,104 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:16,105 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251700738] [2022-03-01 15:50:16,105 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251700738] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:16,105 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750177575] [2022-03-01 15:50:16,105 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:50:16,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:16,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:16,106 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) [2022-03-01 15:50:16,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-01 15:50:16,155 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:50:16,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:16,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:50:16,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:16,308 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:16,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:16,415 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:16,415 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750177575] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:16,415 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:16,415 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-01 15:50:16,415 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874973016] [2022-03-01 15:50:16,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:16,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:50:16,416 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:16,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:50:16,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:50:16,416 INFO L87 Difference]: Start difference. First operand 8613 states and 24547 transitions. Second operand has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:17,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:17,365 INFO L93 Difference]: Finished difference Result 12702 states and 35830 transitions. [2022-03-01 15:50:17,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-03-01 15:50:17,365 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-01 15:50:17,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:17,387 INFO L225 Difference]: With dead ends: 12702 [2022-03-01 15:50:17,387 INFO L226 Difference]: Without dead ends: 12654 [2022-03-01 15:50:17,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2260 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1106, Invalid=5700, Unknown=0, NotChecked=0, Total=6806 [2022-03-01 15:50:17,388 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 571 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 1554 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:17,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [571 Valid, 1554 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:50:17,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12654 states. [2022-03-01 15:50:17,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12654 to 8113. [2022-03-01 15:50:17,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8113 states, 8112 states have (on average 2.844181459566075) internal successors, (23072), 8112 states have internal predecessors, (23072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:17,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8113 states to 8113 states and 23072 transitions. [2022-03-01 15:50:17,538 INFO L78 Accepts]: Start accepts. Automaton has 8113 states and 23072 transitions. Word has length 67 [2022-03-01 15:50:17,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:17,538 INFO L470 AbstractCegarLoop]: Abstraction has 8113 states and 23072 transitions. [2022-03-01 15:50:17,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:17,539 INFO L276 IsEmpty]: Start isEmpty. Operand 8113 states and 23072 transitions. [2022-03-01 15:50:17,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:50:17,548 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:17,548 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:17,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-01 15:50:17,749 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,SelfDestructingSolverStorable33 [2022-03-01 15:50:17,749 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:17,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:17,749 INFO L85 PathProgramCache]: Analyzing trace with hash -292598121, now seen corresponding path program 23 times [2022-03-01 15:50:17,749 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:17,749 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217283461] [2022-03-01 15:50:17,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:17,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:17,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:17,794 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:17,794 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:17,795 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217283461] [2022-03-01 15:50:17,795 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217283461] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:17,795 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806280210] [2022-03-01 15:50:17,795 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:50:17,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:17,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:17,796 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) [2022-03-01 15:50:17,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-01 15:50:17,850 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-01 15:50:17,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:17,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:50:17,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:17,977 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:17,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:18,066 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:18,067 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806280210] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:18,067 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:18,067 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-01 15:50:18,067 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301356470] [2022-03-01 15:50:18,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:18,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:50:18,067 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:18,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:50:18,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:50:18,068 INFO L87 Difference]: Start difference. First operand 8113 states and 23072 transitions. Second operand has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 19 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:18,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:18,982 INFO L93 Difference]: Finished difference Result 12007 states and 33687 transitions. [2022-03-01 15:50:18,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-03-01 15:50:18,982 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 19 states have internal predecessors, (92), 0 states have call successors, (0), 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 [2022-03-01 15:50:18,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:19,001 INFO L225 Difference]: With dead ends: 12007 [2022-03-01 15:50:19,001 INFO L226 Difference]: Without dead ends: 11947 [2022-03-01 15:50:19,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2321 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1410, Invalid=5232, Unknown=0, NotChecked=0, Total=6642 [2022-03-01 15:50:19,002 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 661 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:19,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [661 Valid, 1303 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 15:50:19,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11947 states. [2022-03-01 15:50:19,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11947 to 8669. [2022-03-01 15:50:19,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8669 states, 8668 states have (on average 2.845523765574527) internal successors, (24665), 8668 states have internal predecessors, (24665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:19,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8669 states to 8669 states and 24665 transitions. [2022-03-01 15:50:19,153 INFO L78 Accepts]: Start accepts. Automaton has 8669 states and 24665 transitions. Word has length 67 [2022-03-01 15:50:19,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:19,153 INFO L470 AbstractCegarLoop]: Abstraction has 8669 states and 24665 transitions. [2022-03-01 15:50:19,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 19 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:19,153 INFO L276 IsEmpty]: Start isEmpty. Operand 8669 states and 24665 transitions. [2022-03-01 15:50:19,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:50:19,165 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:19,165 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:19,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-03-01 15:50:19,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:19,370 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:19,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:19,370 INFO L85 PathProgramCache]: Analyzing trace with hash 173181229, now seen corresponding path program 24 times [2022-03-01 15:50:19,370 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:19,370 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275876888] [2022-03-01 15:50:19,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:19,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:19,412 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:19,412 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:19,412 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275876888] [2022-03-01 15:50:19,412 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275876888] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:19,412 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627088582] [2022-03-01 15:50:19,412 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:50:19,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:19,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:19,413 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) [2022-03-01 15:50:19,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-01 15:50:19,470 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-01 15:50:19,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:19,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:50:19,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:19,607 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:19,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:19,694 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:19,694 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627088582] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:19,694 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:19,694 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-01 15:50:19,694 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864103429] [2022-03-01 15:50:19,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:19,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:50:19,695 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:19,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:50:19,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:50:19,695 INFO L87 Difference]: Start difference. First operand 8669 states and 24665 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:20,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:20,377 INFO L93 Difference]: Finished difference Result 11551 states and 32449 transitions. [2022-03-01 15:50:20,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-01 15:50:20,377 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-01 15:50:20,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:20,397 INFO L225 Difference]: With dead ends: 11551 [2022-03-01 15:50:20,397 INFO L226 Difference]: Without dead ends: 11503 [2022-03-01 15:50:20,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1265 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=871, Invalid=3161, Unknown=0, NotChecked=0, Total=4032 [2022-03-01 15:50:20,398 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 609 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:20,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 1181 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 15:50:20,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11503 states. [2022-03-01 15:50:20,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11503 to 8353. [2022-03-01 15:50:20,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8353 states, 8352 states have (on average 2.842432950191571) internal successors, (23740), 8352 states have internal predecessors, (23740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:20,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8353 states to 8353 states and 23740 transitions. [2022-03-01 15:50:20,566 INFO L78 Accepts]: Start accepts. Automaton has 8353 states and 23740 transitions. Word has length 67 [2022-03-01 15:50:20,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:20,566 INFO L470 AbstractCegarLoop]: Abstraction has 8353 states and 23740 transitions. [2022-03-01 15:50:20,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:20,566 INFO L276 IsEmpty]: Start isEmpty. Operand 8353 states and 23740 transitions. [2022-03-01 15:50:20,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:50:20,576 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:20,577 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:20,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-03-01 15:50:20,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:20,777 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:20,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:20,777 INFO L85 PathProgramCache]: Analyzing trace with hash -124513491, now seen corresponding path program 25 times [2022-03-01 15:50:20,778 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:20,778 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595883952] [2022-03-01 15:50:20,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:20,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:20,836 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:20,836 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:20,836 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595883952] [2022-03-01 15:50:20,836 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595883952] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:20,836 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475572580] [2022-03-01 15:50:20,836 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 15:50:20,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:20,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:20,838 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) [2022-03-01 15:50:20,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-01 15:50:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:20,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:50:20,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:21,088 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:21,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:21,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:21,195 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475572580] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:21,195 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:21,195 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-03-01 15:50:21,195 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678029340] [2022-03-01 15:50:21,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:21,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:50:21,195 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:21,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:50:21,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:50:21,196 INFO L87 Difference]: Start difference. First operand 8353 states and 23740 transitions. Second operand has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:21,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:21,487 INFO L93 Difference]: Finished difference Result 8669 states and 24545 transitions. [2022-03-01 15:50:21,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-01 15:50:21,487 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 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 [2022-03-01 15:50:21,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:21,499 INFO L225 Difference]: With dead ends: 8669 [2022-03-01 15:50:21,500 INFO L226 Difference]: Without dead ends: 8633 [2022-03-01 15:50:21,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=320, Invalid=1086, Unknown=0, NotChecked=0, Total=1406 [2022-03-01 15:50:21,500 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 308 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:21,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 1032 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:50:21,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8633 states. [2022-03-01 15:50:21,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8633 to 8361. [2022-03-01 15:50:21,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8361 states, 8360 states have (on average 2.8423444976076553) internal successors, (23762), 8360 states have internal predecessors, (23762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:21,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8361 states to 8361 states and 23762 transitions. [2022-03-01 15:50:21,609 INFO L78 Accepts]: Start accepts. Automaton has 8361 states and 23762 transitions. Word has length 67 [2022-03-01 15:50:21,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:21,610 INFO L470 AbstractCegarLoop]: Abstraction has 8361 states and 23762 transitions. [2022-03-01 15:50:21,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:21,610 INFO L276 IsEmpty]: Start isEmpty. Operand 8361 states and 23762 transitions. [2022-03-01 15:50:21,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:50:21,620 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:21,620 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:21,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-01 15:50:21,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-03-01 15:50:21,820 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:21,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:21,821 INFO L85 PathProgramCache]: Analyzing trace with hash -312172267, now seen corresponding path program 26 times [2022-03-01 15:50:21,821 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:21,821 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878507403] [2022-03-01 15:50:21,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:21,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:21,865 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:21,865 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:21,865 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878507403] [2022-03-01 15:50:21,865 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878507403] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:21,866 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419697628] [2022-03-01 15:50:21,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:50:21,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:21,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:21,872 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) [2022-03-01 15:50:21,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-01 15:50:21,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:50:21,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:21,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:50:21,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:22,078 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:22,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:22,210 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:50:22,210 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419697628] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:22,210 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:22,211 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-01 15:50:22,211 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126594602] [2022-03-01 15:50:22,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:22,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:50:22,211 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:22,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:50:22,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:50:22,211 INFO L87 Difference]: Start difference. First operand 8361 states and 23762 transitions. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:22,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:22,815 INFO L93 Difference]: Finished difference Result 11412 states and 31799 transitions. [2022-03-01 15:50:22,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-01 15:50:22,815 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 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 [2022-03-01 15:50:22,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:22,832 INFO L225 Difference]: With dead ends: 11412 [2022-03-01 15:50:22,832 INFO L226 Difference]: Without dead ends: 11277 [2022-03-01 15:50:22,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 925 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=601, Invalid=2369, Unknown=0, NotChecked=0, Total=2970 [2022-03-01 15:50:22,833 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 557 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:22,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [557 Valid, 1349 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:50:22,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11277 states. [2022-03-01 15:50:22,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11277 to 9065. [2022-03-01 15:50:22,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9065 states, 9064 states have (on average 2.8506178287731685) internal successors, (25838), 9064 states have internal predecessors, (25838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:22,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9065 states to 9065 states and 25838 transitions. [2022-03-01 15:50:22,983 INFO L78 Accepts]: Start accepts. Automaton has 9065 states and 25838 transitions. Word has length 67 [2022-03-01 15:50:22,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:22,983 INFO L470 AbstractCegarLoop]: Abstraction has 9065 states and 25838 transitions. [2022-03-01 15:50:22,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:22,983 INFO L276 IsEmpty]: Start isEmpty. Operand 9065 states and 25838 transitions. [2022-03-01 15:50:22,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:50:22,995 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:22,995 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:23,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-03-01 15:50:23,196 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,SelfDestructingSolverStorable37 [2022-03-01 15:50:23,196 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:23,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:23,196 INFO L85 PathProgramCache]: Analyzing trace with hash 153607083, now seen corresponding path program 27 times [2022-03-01 15:50:23,196 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:23,196 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881557835] [2022-03-01 15:50:23,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:23,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:23,247 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:23,247 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:23,247 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881557835] [2022-03-01 15:50:23,247 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881557835] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:23,247 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757354351] [2022-03-01 15:50:23,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:50:23,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:23,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:23,248 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) [2022-03-01 15:50:23,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-01 15:50:23,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 15:50:23,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:23,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:50:23,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:23,440 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:23,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:23,528 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:23,528 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757354351] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:23,528 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:23,528 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-01 15:50:23,529 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432891901] [2022-03-01 15:50:23,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:23,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:50:23,529 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:23,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:50:23,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:50:23,529 INFO L87 Difference]: Start difference. First operand 9065 states and 25838 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:24,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:24,001 INFO L93 Difference]: Finished difference Result 10375 states and 29115 transitions. [2022-03-01 15:50:24,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 15:50:24,002 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-01 15:50:24,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:24,018 INFO L225 Difference]: With dead ends: 10375 [2022-03-01 15:50:24,018 INFO L226 Difference]: Without dead ends: 10327 [2022-03-01 15:50:24,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=391, Invalid=1865, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 15:50:24,019 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 418 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:24,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 1304 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 15:50:24,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10327 states. [2022-03-01 15:50:24,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10327 to 9065. [2022-03-01 15:50:24,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9065 states, 9064 states have (on average 2.8497352162400706) internal successors, (25830), 9064 states have internal predecessors, (25830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:24,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9065 states to 9065 states and 25830 transitions. [2022-03-01 15:50:24,171 INFO L78 Accepts]: Start accepts. Automaton has 9065 states and 25830 transitions. Word has length 67 [2022-03-01 15:50:24,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:24,171 INFO L470 AbstractCegarLoop]: Abstraction has 9065 states and 25830 transitions. [2022-03-01 15:50:24,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:24,171 INFO L276 IsEmpty]: Start isEmpty. Operand 9065 states and 25830 transitions. [2022-03-01 15:50:24,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:50:24,182 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:24,182 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:24,198 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-03-01 15:50:24,395 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,SelfDestructingSolverStorable38 [2022-03-01 15:50:24,395 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:24,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:24,396 INFO L85 PathProgramCache]: Analyzing trace with hash -182842027, now seen corresponding path program 28 times [2022-03-01 15:50:24,396 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:24,396 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464580772] [2022-03-01 15:50:24,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:24,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:24,454 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:24,454 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:24,454 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464580772] [2022-03-01 15:50:24,454 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464580772] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:24,455 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646053130] [2022-03-01 15:50:24,455 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:50:24,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:24,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:24,456 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) [2022-03-01 15:50:24,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-01 15:50:24,516 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:50:24,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:24,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:50:24,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:24,644 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:24,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:24,737 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:50:24,737 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646053130] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:24,737 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:24,737 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-01 15:50:24,737 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473777396] [2022-03-01 15:50:24,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:24,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:50:24,738 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:24,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:50:24,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:50:24,738 INFO L87 Difference]: Start difference. First operand 9065 states and 25830 transitions. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:25,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:25,399 INFO L93 Difference]: Finished difference Result 12372 states and 34699 transitions. [2022-03-01 15:50:25,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-01 15:50:25,399 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 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 [2022-03-01 15:50:25,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:25,419 INFO L225 Difference]: With dead ends: 12372 [2022-03-01 15:50:25,420 INFO L226 Difference]: Without dead ends: 12297 [2022-03-01 15:50:25,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=614, Invalid=2692, Unknown=0, NotChecked=0, Total=3306 [2022-03-01 15:50:25,420 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 685 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:25,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [685 Valid, 954 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 15:50:25,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12297 states. [2022-03-01 15:50:25,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12297 to 9789. [2022-03-01 15:50:25,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9789 states, 9788 states have (on average 2.852983244789538) internal successors, (27925), 9788 states have internal predecessors, (27925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:25,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9789 states to 9789 states and 27925 transitions. [2022-03-01 15:50:25,577 INFO L78 Accepts]: Start accepts. Automaton has 9789 states and 27925 transitions. Word has length 67 [2022-03-01 15:50:25,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:25,577 INFO L470 AbstractCegarLoop]: Abstraction has 9789 states and 27925 transitions. [2022-03-01 15:50:25,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:25,578 INFO L276 IsEmpty]: Start isEmpty. Operand 9789 states and 27925 transitions. [2022-03-01 15:50:25,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:50:25,590 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:25,590 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:25,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-03-01 15:50:25,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-03-01 15:50:25,790 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:25,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:25,791 INFO L85 PathProgramCache]: Analyzing trace with hash 282937323, now seen corresponding path program 29 times [2022-03-01 15:50:25,791 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:25,791 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307815458] [2022-03-01 15:50:25,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:25,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:25,839 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:25,839 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:25,839 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307815458] [2022-03-01 15:50:25,839 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307815458] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:25,840 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898281396] [2022-03-01 15:50:25,840 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:50:25,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:25,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:25,841 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) [2022-03-01 15:50:25,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-01 15:50:25,901 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:50:25,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:25,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:50:25,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:26,095 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:26,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:26,192 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:26,192 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898281396] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:26,192 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:26,192 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-01 15:50:26,193 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818785915] [2022-03-01 15:50:26,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:26,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:50:26,193 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:26,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:50:26,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:50:26,195 INFO L87 Difference]: Start difference. First operand 9789 states and 27925 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:26,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:26,786 INFO L93 Difference]: Finished difference Result 11335 states and 31979 transitions. [2022-03-01 15:50:26,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-01 15:50:26,787 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-01 15:50:26,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:26,804 INFO L225 Difference]: With dead ends: 11335 [2022-03-01 15:50:26,804 INFO L226 Difference]: Without dead ends: 11287 [2022-03-01 15:50:26,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=421, Invalid=2231, Unknown=0, NotChecked=0, Total=2652 [2022-03-01 15:50:26,805 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 371 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:26,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 1538 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:50:26,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11287 states. [2022-03-01 15:50:26,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11287 to 9429. [2022-03-01 15:50:26,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9429 states, 9428 states have (on average 2.8480059397539246) internal successors, (26851), 9428 states have internal predecessors, (26851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:26,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9429 states to 9429 states and 26851 transitions. [2022-03-01 15:50:26,944 INFO L78 Accepts]: Start accepts. Automaton has 9429 states and 26851 transitions. Word has length 67 [2022-03-01 15:50:26,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:26,944 INFO L470 AbstractCegarLoop]: Abstraction has 9429 states and 26851 transitions. [2022-03-01 15:50:26,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:26,944 INFO L276 IsEmpty]: Start isEmpty. Operand 9429 states and 26851 transitions. [2022-03-01 15:50:26,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:50:26,955 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:26,955 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:26,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-03-01 15:50:27,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:27,156 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:27,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:27,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1967608649, now seen corresponding path program 30 times [2022-03-01 15:50:27,156 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:27,156 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680532393] [2022-03-01 15:50:27,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:27,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:27,210 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:27,210 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:27,210 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680532393] [2022-03-01 15:50:27,210 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680532393] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:27,210 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146996648] [2022-03-01 15:50:27,210 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:50:27,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:27,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:27,212 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) [2022-03-01 15:50:27,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-01 15:50:27,267 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 15:50:27,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:27,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:50:27,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:27,394 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:27,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:27,484 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:50:27,484 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146996648] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:27,484 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:27,484 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-01 15:50:27,485 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885605530] [2022-03-01 15:50:27,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:27,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:50:27,485 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:27,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:50:27,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:50:27,485 INFO L87 Difference]: Start difference. First operand 9429 states and 26851 transitions. Second operand has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:27,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:27,969 INFO L93 Difference]: Finished difference Result 12040 states and 33806 transitions. [2022-03-01 15:50:27,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 15:50:27,969 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-01 15:50:27,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:27,990 INFO L225 Difference]: With dead ends: 12040 [2022-03-01 15:50:27,991 INFO L226 Difference]: Without dead ends: 11980 [2022-03-01 15:50:27,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=466, Invalid=1790, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 15:50:27,992 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 479 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:27,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 1016 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 15:50:28,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11980 states. [2022-03-01 15:50:28,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11980 to 10313. [2022-03-01 15:50:28,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10313 states, 10312 states have (on average 2.8485259891388672) internal successors, (29374), 10312 states have internal predecessors, (29374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:28,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10313 states to 10313 states and 29374 transitions. [2022-03-01 15:50:28,221 INFO L78 Accepts]: Start accepts. Automaton has 10313 states and 29374 transitions. Word has length 67 [2022-03-01 15:50:28,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:28,221 INFO L470 AbstractCegarLoop]: Abstraction has 10313 states and 29374 transitions. [2022-03-01 15:50:28,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:28,222 INFO L276 IsEmpty]: Start isEmpty. Operand 10313 states and 29374 transitions. [2022-03-01 15:50:28,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:50:28,235 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:28,235 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:28,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-03-01 15:50:28,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:28,435 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:28,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:28,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1501829299, now seen corresponding path program 31 times [2022-03-01 15:50:28,436 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:28,436 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745508002] [2022-03-01 15:50:28,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:28,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:28,490 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:28,490 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:28,490 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745508002] [2022-03-01 15:50:28,490 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745508002] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:28,490 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163409773] [2022-03-01 15:50:28,491 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 15:50:28,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:28,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:28,492 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) [2022-03-01 15:50:28,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-01 15:50:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:28,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:50:28,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:28,689 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:28,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:28,779 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:28,780 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163409773] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:28,780 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:28,780 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-01 15:50:28,780 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136124961] [2022-03-01 15:50:28,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:28,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:50:28,780 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:28,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:50:28,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:50:28,781 INFO L87 Difference]: Start difference. First operand 10313 states and 29374 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:29,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:29,258 INFO L93 Difference]: Finished difference Result 11913 states and 33504 transitions. [2022-03-01 15:50:29,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-01 15:50:29,259 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 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 [2022-03-01 15:50:29,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:29,277 INFO L225 Difference]: With dead ends: 11913 [2022-03-01 15:50:29,278 INFO L226 Difference]: Without dead ends: 11865 [2022-03-01 15:50:29,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=367, Invalid=1613, Unknown=0, NotChecked=0, Total=1980 [2022-03-01 15:50:29,278 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 401 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:29,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 984 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 15:50:29,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11865 states. [2022-03-01 15:50:29,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11865 to 9773. [2022-03-01 15:50:29,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9773 states, 9772 states have (on average 2.847421203438395) internal successors, (27825), 9772 states have internal predecessors, (27825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:29,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9773 states to 9773 states and 27825 transitions. [2022-03-01 15:50:29,439 INFO L78 Accepts]: Start accepts. Automaton has 9773 states and 27825 transitions. Word has length 67 [2022-03-01 15:50:29,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:29,439 INFO L470 AbstractCegarLoop]: Abstraction has 9773 states and 27825 transitions. [2022-03-01 15:50:29,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:29,439 INFO L276 IsEmpty]: Start isEmpty. Operand 9773 states and 27825 transitions. [2022-03-01 15:50:29,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:50:29,452 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:29,452 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:29,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-03-01 15:50:29,652 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,SelfDestructingSolverStorable42 [2022-03-01 15:50:29,653 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:29,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:29,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1799524019, now seen corresponding path program 32 times [2022-03-01 15:50:29,653 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:29,653 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902907780] [2022-03-01 15:50:29,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:29,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:29,698 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:29,699 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:29,699 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902907780] [2022-03-01 15:50:29,699 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902907780] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:29,699 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501488584] [2022-03-01 15:50:29,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:50:29,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:29,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:29,700 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) [2022-03-01 15:50:29,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-01 15:50:29,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:50:29,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:29,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:50:29,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:29,907 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:29,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:30,020 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:30,020 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501488584] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:30,020 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:30,020 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-03-01 15:50:30,020 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916891730] [2022-03-01 15:50:30,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:30,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:50:30,021 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:30,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:50:30,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:50:30,021 INFO L87 Difference]: Start difference. First operand 9773 states and 27825 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) [2022-03-01 15:50:30,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:30,507 INFO L93 Difference]: Finished difference Result 11118 states and 31403 transitions. [2022-03-01 15:50:30,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-01 15:50:30,507 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 [2022-03-01 15:50:30,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:30,523 INFO L225 Difference]: With dead ends: 11118 [2022-03-01 15:50:30,523 INFO L226 Difference]: Without dead ends: 11046 [2022-03-01 15:50:30,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=369, Invalid=1793, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 15:50:30,523 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 301 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:30,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 1233 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 15:50:30,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11046 states. [2022-03-01 15:50:30,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11046 to 9929. [2022-03-01 15:50:30,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9929 states, 9928 states have (on average 2.847904915390814) internal successors, (28274), 9928 states have internal predecessors, (28274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:30,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9929 states to 9929 states and 28274 transitions. [2022-03-01 15:50:30,675 INFO L78 Accepts]: Start accepts. Automaton has 9929 states and 28274 transitions. Word has length 67 [2022-03-01 15:50:30,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:30,675 INFO L470 AbstractCegarLoop]: Abstraction has 9929 states and 28274 transitions. [2022-03-01 15:50:30,675 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) [2022-03-01 15:50:30,676 INFO L276 IsEmpty]: Start isEmpty. Operand 9929 states and 28274 transitions. [2022-03-01 15:50:30,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:50:30,688 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:30,688 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:30,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-03-01 15:50:30,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:30,888 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:30,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:30,889 INFO L85 PathProgramCache]: Analyzing trace with hash -453711463, now seen corresponding path program 33 times [2022-03-01 15:50:30,889 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:30,889 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370607715] [2022-03-01 15:50:30,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:30,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:30,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:30,949 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:30,949 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:30,949 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370607715] [2022-03-01 15:50:30,949 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370607715] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:30,949 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480456832] [2022-03-01 15:50:30,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:50:30,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:30,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:30,950 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) [2022-03-01 15:50:30,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-01 15:50:31,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 15:50:31,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:31,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:50:31,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:31,149 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:31,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:31,256 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:50:31,256 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480456832] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:31,256 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:31,256 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-01 15:50:31,256 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442464628] [2022-03-01 15:50:31,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:31,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:50:31,256 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:31,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:50:31,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:50:31,257 INFO L87 Difference]: Start difference. First operand 9929 states and 28274 transitions. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:31,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:31,904 INFO L93 Difference]: Finished difference Result 12237 states and 34286 transitions. [2022-03-01 15:50:31,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 15:50:31,904 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 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 [2022-03-01 15:50:31,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:31,925 INFO L225 Difference]: With dead ends: 12237 [2022-03-01 15:50:31,925 INFO L226 Difference]: Without dead ends: 12162 [2022-03-01 15:50:31,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 768 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=545, Invalid=2317, Unknown=0, NotChecked=0, Total=2862 [2022-03-01 15:50:31,926 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 516 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:31,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 1539 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:50:31,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12162 states. [2022-03-01 15:50:32,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12162 to 10357. [2022-03-01 15:50:32,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10357 states, 10356 states have (on average 2.8515836230204714) internal successors, (29531), 10356 states have internal predecessors, (29531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:32,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10357 states to 10357 states and 29531 transitions. [2022-03-01 15:50:32,091 INFO L78 Accepts]: Start accepts. Automaton has 10357 states and 29531 transitions. Word has length 67 [2022-03-01 15:50:32,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:32,091 INFO L470 AbstractCegarLoop]: Abstraction has 10357 states and 29531 transitions. [2022-03-01 15:50:32,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:32,091 INFO L276 IsEmpty]: Start isEmpty. Operand 10357 states and 29531 transitions. [2022-03-01 15:50:32,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:50:32,104 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:32,104 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:32,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-03-01 15:50:32,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:32,309 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:32,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:32,309 INFO L85 PathProgramCache]: Analyzing trace with hash 12067887, now seen corresponding path program 34 times [2022-03-01 15:50:32,309 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:32,309 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869111419] [2022-03-01 15:50:32,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:32,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:32,353 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:32,354 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:32,354 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869111419] [2022-03-01 15:50:32,354 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869111419] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:32,354 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653486455] [2022-03-01 15:50:32,354 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:50:32,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:32,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:32,355 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) [2022-03-01 15:50:32,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-01 15:50:32,412 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:50:32,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:32,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:50:32,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:32,594 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:32,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:32,693 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:32,694 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653486455] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:32,694 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:32,694 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-01 15:50:32,694 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246605425] [2022-03-01 15:50:32,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:32,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:50:32,694 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:32,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:50:32,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:50:32,695 INFO L87 Difference]: Start difference. First operand 10357 states and 29531 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:33,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:33,246 INFO L93 Difference]: Finished difference Result 11340 states and 32036 transitions. [2022-03-01 15:50:33,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-01 15:50:33,247 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-01 15:50:33,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:33,265 INFO L225 Difference]: With dead ends: 11340 [2022-03-01 15:50:33,265 INFO L226 Difference]: Without dead ends: 11292 [2022-03-01 15:50:33,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=440, Invalid=2110, Unknown=0, NotChecked=0, Total=2550 [2022-03-01 15:50:33,266 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 417 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:33,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 1283 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 15:50:33,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11292 states. [2022-03-01 15:50:33,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11292 to 10057. [2022-03-01 15:50:33,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10057 states, 10056 states have (on average 2.8478520286396183) internal successors, (28638), 10056 states have internal predecessors, (28638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:33,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10057 states to 10057 states and 28638 transitions. [2022-03-01 15:50:33,416 INFO L78 Accepts]: Start accepts. Automaton has 10057 states and 28638 transitions. Word has length 67 [2022-03-01 15:50:33,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:33,416 INFO L470 AbstractCegarLoop]: Abstraction has 10057 states and 28638 transitions. [2022-03-01 15:50:33,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:33,416 INFO L276 IsEmpty]: Start isEmpty. Operand 10057 states and 28638 transitions. [2022-03-01 15:50:33,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:50:33,429 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:33,429 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:33,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-03-01 15:50:33,629 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,SelfDestructingSolverStorable45 [2022-03-01 15:50:33,630 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:33,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:33,630 INFO L85 PathProgramCache]: Analyzing trace with hash 2056489211, now seen corresponding path program 35 times [2022-03-01 15:50:33,630 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:33,630 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150412248] [2022-03-01 15:50:33,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:33,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:33,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:33,681 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:33,681 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:33,681 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150412248] [2022-03-01 15:50:33,681 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150412248] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:33,681 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635592006] [2022-03-01 15:50:33,681 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:50:33,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:33,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:33,682 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) [2022-03-01 15:50:33,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-01 15:50:33,742 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 15:50:33,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:33,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:50:33,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:33,894 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:33,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:33,987 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:50:33,987 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635592006] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:33,987 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:33,987 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-01 15:50:33,987 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134818400] [2022-03-01 15:50:33,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:33,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:50:33,987 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:33,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:50:33,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:50:33,988 INFO L87 Difference]: Start difference. First operand 10057 states and 28638 transitions. Second operand has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:34,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:34,763 INFO L93 Difference]: Finished difference Result 13467 states and 37757 transitions. [2022-03-01 15:50:34,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-01 15:50:34,763 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-01 15:50:34,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:34,786 INFO L225 Difference]: With dead ends: 13467 [2022-03-01 15:50:34,786 INFO L226 Difference]: Without dead ends: 13407 [2022-03-01 15:50:34,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=660, Invalid=3000, Unknown=0, NotChecked=0, Total=3660 [2022-03-01 15:50:34,787 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 514 mSDsluCounter, 1506 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:34,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [514 Valid, 1456 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:50:34,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13407 states. [2022-03-01 15:50:34,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13407 to 11301. [2022-03-01 15:50:34,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11301 states, 11300 states have (on average 2.846283185840708) internal successors, (32163), 11300 states have internal predecessors, (32163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:34,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11301 states to 11301 states and 32163 transitions. [2022-03-01 15:50:34,998 INFO L78 Accepts]: Start accepts. Automaton has 11301 states and 32163 transitions. Word has length 67 [2022-03-01 15:50:34,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:34,998 INFO L470 AbstractCegarLoop]: Abstraction has 11301 states and 32163 transitions. [2022-03-01 15:50:34,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:34,999 INFO L276 IsEmpty]: Start isEmpty. Operand 11301 states and 32163 transitions. [2022-03-01 15:50:35,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:50:35,014 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:35,014 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:35,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-03-01 15:50:35,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-03-01 15:50:35,214 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:35,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:35,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1772698735, now seen corresponding path program 36 times [2022-03-01 15:50:35,215 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:35,215 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956510104] [2022-03-01 15:50:35,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:35,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:35,265 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:35,265 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:35,265 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956510104] [2022-03-01 15:50:35,265 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956510104] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:35,265 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236281279] [2022-03-01 15:50:35,266 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:50:35,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:35,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:35,267 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) [2022-03-01 15:50:35,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-01 15:50:35,327 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 15:50:35,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:35,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:50:35,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:35,469 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:35,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:35,561 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:35,561 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236281279] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:35,561 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:35,561 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-01 15:50:35,561 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134126981] [2022-03-01 15:50:35,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:35,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:50:35,561 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:35,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:50:35,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:50:35,562 INFO L87 Difference]: Start difference. First operand 11301 states and 32163 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:36,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:36,340 INFO L93 Difference]: Finished difference Result 13230 states and 37194 transitions. [2022-03-01 15:50:36,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-01 15:50:36,340 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 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 [2022-03-01 15:50:36,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:36,369 INFO L225 Difference]: With dead ends: 13230 [2022-03-01 15:50:36,369 INFO L226 Difference]: Without dead ends: 13182 [2022-03-01 15:50:36,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=530, Invalid=2892, Unknown=0, NotChecked=0, Total=3422 [2022-03-01 15:50:36,370 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 431 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:36,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 1504 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:50:36,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13182 states. [2022-03-01 15:50:36,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13182 to 10909. [2022-03-01 15:50:36,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10909 states, 10908 states have (on average 2.843142647598093) internal successors, (31013), 10908 states have internal predecessors, (31013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:36,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10909 states to 10909 states and 31013 transitions. [2022-03-01 15:50:36,567 INFO L78 Accepts]: Start accepts. Automaton has 10909 states and 31013 transitions. Word has length 67 [2022-03-01 15:50:36,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:36,567 INFO L470 AbstractCegarLoop]: Abstraction has 10909 states and 31013 transitions. [2022-03-01 15:50:36,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:36,568 INFO L276 IsEmpty]: Start isEmpty. Operand 10909 states and 31013 transitions. [2022-03-01 15:50:36,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:50:36,584 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:36,584 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:36,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-03-01 15:50:36,799 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,SelfDestructingSolverStorable47 [2022-03-01 15:50:36,799 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:36,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:36,800 INFO L85 PathProgramCache]: Analyzing trace with hash -2070393455, now seen corresponding path program 37 times [2022-03-01 15:50:36,800 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:36,800 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760331714] [2022-03-01 15:50:36,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:36,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:36,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:36,853 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:36,854 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:36,854 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760331714] [2022-03-01 15:50:36,854 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760331714] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:36,854 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849940496] [2022-03-01 15:50:36,854 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 15:50:36,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:36,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:36,855 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) [2022-03-01 15:50:36,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-01 15:50:36,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:36,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:50:36,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:37,068 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:37,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:37,179 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:37,179 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849940496] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:37,180 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:37,180 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-03-01 15:50:37,180 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726138250] [2022-03-01 15:50:37,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:37,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:50:37,180 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:37,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:50:37,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:50:37,181 INFO L87 Difference]: Start difference. First operand 10909 states and 31013 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) [2022-03-01 15:50:37,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:37,958 INFO L93 Difference]: Finished difference Result 12931 states and 36473 transitions. [2022-03-01 15:50:37,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-01 15:50:37,959 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 [2022-03-01 15:50:37,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:37,988 INFO L225 Difference]: With dead ends: 12931 [2022-03-01 15:50:37,988 INFO L226 Difference]: Without dead ends: 12859 [2022-03-01 15:50:37,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1000 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=556, Invalid=3226, Unknown=0, NotChecked=0, Total=3782 [2022-03-01 15:50:37,989 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 399 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:37,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 1587 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:50:38,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12859 states. [2022-03-01 15:50:38,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12859 to 11213. [2022-03-01 15:50:38,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11213 states, 11212 states have (on average 2.8441848019978595) internal successors, (31889), 11212 states have internal predecessors, (31889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:38,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11213 states to 11213 states and 31889 transitions. [2022-03-01 15:50:38,160 INFO L78 Accepts]: Start accepts. Automaton has 11213 states and 31889 transitions. Word has length 67 [2022-03-01 15:50:38,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:38,160 INFO L470 AbstractCegarLoop]: Abstraction has 11213 states and 31889 transitions. [2022-03-01 15:50:38,160 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) [2022-03-01 15:50:38,160 INFO L276 IsEmpty]: Start isEmpty. Operand 11213 states and 31889 transitions. [2022-03-01 15:50:38,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:50:38,174 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:38,174 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:38,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-03-01 15:50:38,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:38,375 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:38,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:38,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1561534917, now seen corresponding path program 38 times [2022-03-01 15:50:38,375 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:38,375 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543157219] [2022-03-01 15:50:38,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:38,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:38,431 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:38,431 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:38,431 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543157219] [2022-03-01 15:50:38,432 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543157219] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:38,432 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852073385] [2022-03-01 15:50:38,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:50:38,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:38,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:38,433 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) [2022-03-01 15:50:38,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-01 15:50:38,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:50:38,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:38,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:50:38,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:38,625 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:38,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:38,714 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:50:38,714 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852073385] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:38,714 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:38,714 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-01 15:50:38,715 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438841548] [2022-03-01 15:50:38,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:38,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:50:38,715 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:38,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:50:38,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:50:38,715 INFO L87 Difference]: Start difference. First operand 11213 states and 31889 transitions. Second operand has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:39,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:39,401 INFO L93 Difference]: Finished difference Result 14619 states and 40953 transitions. [2022-03-01 15:50:39,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 15:50:39,401 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-01 15:50:39,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:39,433 INFO L225 Difference]: With dead ends: 14619 [2022-03-01 15:50:39,433 INFO L226 Difference]: Without dead ends: 14559 [2022-03-01 15:50:39,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=693, Invalid=2729, Unknown=0, NotChecked=0, Total=3422 [2022-03-01 15:50:39,434 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 654 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:39,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [654 Valid, 1241 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 15:50:39,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14559 states. [2022-03-01 15:50:39,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14559 to 12169. [2022-03-01 15:50:39,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12169 states, 12168 states have (on average 2.8496055226824457) internal successors, (34674), 12168 states have internal predecessors, (34674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:39,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12169 states to 12169 states and 34674 transitions. [2022-03-01 15:50:39,687 INFO L78 Accepts]: Start accepts. Automaton has 12169 states and 34674 transitions. Word has length 67 [2022-03-01 15:50:39,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:39,687 INFO L470 AbstractCegarLoop]: Abstraction has 12169 states and 34674 transitions. [2022-03-01 15:50:39,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:39,687 INFO L276 IsEmpty]: Start isEmpty. Operand 12169 states and 34674 transitions. [2022-03-01 15:50:39,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:50:39,703 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:39,703 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:39,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-03-01 15:50:39,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-03-01 15:50:39,903 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:39,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:39,904 INFO L85 PathProgramCache]: Analyzing trace with hash 2027314267, now seen corresponding path program 39 times [2022-03-01 15:50:39,904 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:39,904 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118466521] [2022-03-01 15:50:39,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:39,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:39,954 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:39,954 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:39,954 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118466521] [2022-03-01 15:50:39,954 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118466521] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:39,954 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669198391] [2022-03-01 15:50:39,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:50:39,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:39,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:39,956 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) [2022-03-01 15:50:39,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-01 15:50:40,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 15:50:40,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:40,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:50:40,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:40,172 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:40,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:40,273 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:40,273 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669198391] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:40,273 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:40,273 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-01 15:50:40,273 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244675836] [2022-03-01 15:50:40,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:40,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:50:40,274 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:40,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:50:40,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:50:40,274 INFO L87 Difference]: Start difference. First operand 12169 states and 34674 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:40,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:40,914 INFO L93 Difference]: Finished difference Result 14342 states and 40301 transitions. [2022-03-01 15:50:40,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 15:50:40,914 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 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 [2022-03-01 15:50:40,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:40,945 INFO L225 Difference]: With dead ends: 14342 [2022-03-01 15:50:40,946 INFO L226 Difference]: Without dead ends: 14294 [2022-03-01 15:50:40,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=571, Invalid=2621, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 15:50:40,946 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 506 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:40,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 1143 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 15:50:40,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14294 states. [2022-03-01 15:50:41,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14294 to 11593. [2022-03-01 15:50:41,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11593 states, 11592 states have (on average 2.843512767425811) internal successors, (32962), 11592 states have internal predecessors, (32962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:41,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11593 states to 11593 states and 32962 transitions. [2022-03-01 15:50:41,153 INFO L78 Accepts]: Start accepts. Automaton has 11593 states and 32962 transitions. Word has length 67 [2022-03-01 15:50:41,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:41,153 INFO L470 AbstractCegarLoop]: Abstraction has 11593 states and 32962 transitions. [2022-03-01 15:50:41,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:41,153 INFO L276 IsEmpty]: Start isEmpty. Operand 11593 states and 32962 transitions. [2022-03-01 15:50:41,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:50:41,169 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:41,169 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:41,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-03-01 15:50:41,369 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,SelfDestructingSolverStorable50 [2022-03-01 15:50:41,369 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:41,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:41,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1729619547, now seen corresponding path program 40 times [2022-03-01 15:50:41,370 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:41,370 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340687379] [2022-03-01 15:50:41,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:41,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:41,423 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:41,423 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:41,423 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340687379] [2022-03-01 15:50:41,423 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340687379] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:41,424 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296728315] [2022-03-01 15:50:41,424 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:50:41,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:41,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:41,440 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:50:41,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-01 15:50:41,501 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:50:41,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:41,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:50:41,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:41,651 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:41,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:41,760 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:41,760 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296728315] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:41,760 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:41,760 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-03-01 15:50:41,760 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868923108] [2022-03-01 15:50:41,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:41,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:50:41,761 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:41,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:50:41,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:50:41,761 INFO L87 Difference]: Start difference. First operand 11593 states and 32962 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) [2022-03-01 15:50:42,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:42,628 INFO L93 Difference]: Finished difference Result 14877 states and 41753 transitions. [2022-03-01 15:50:42,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-01 15:50:42,629 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 [2022-03-01 15:50:42,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:42,655 INFO L225 Difference]: With dead ends: 14877 [2022-03-01 15:50:42,655 INFO L226 Difference]: Without dead ends: 14805 [2022-03-01 15:50:42,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1368 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=760, Invalid=3932, Unknown=0, NotChecked=0, Total=4692 [2022-03-01 15:50:42,656 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 531 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 1513 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:42,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 1513 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:50:42,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14805 states. [2022-03-01 15:50:42,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14805 to 8477. [2022-03-01 15:50:42,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8477 states, 8476 states have (on average 2.840608777725342) internal successors, (24077), 8476 states have internal predecessors, (24077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:42,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8477 states to 8477 states and 24077 transitions. [2022-03-01 15:50:42,819 INFO L78 Accepts]: Start accepts. Automaton has 8477 states and 24077 transitions. Word has length 67 [2022-03-01 15:50:42,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:42,819 INFO L470 AbstractCegarLoop]: Abstraction has 8477 states and 24077 transitions. [2022-03-01 15:50:42,819 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) [2022-03-01 15:50:42,819 INFO L276 IsEmpty]: Start isEmpty. Operand 8477 states and 24077 transitions. [2022-03-01 15:50:42,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-01 15:50:42,830 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:42,830 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:42,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-03-01 15:50:43,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:43,030 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:43,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:43,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1963059337, now seen corresponding path program 41 times [2022-03-01 15:50:43,031 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:43,031 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302548396] [2022-03-01 15:50:43,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:43,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:43,076 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:43,076 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:43,076 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302548396] [2022-03-01 15:50:43,076 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302548396] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:43,076 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311359671] [2022-03-01 15:50:43,077 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:50:43,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:43,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:43,078 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:50:43,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-01 15:50:43,140 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:50:43,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:43,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 15:50:43,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:43,279 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:43,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:43,389 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:43,389 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311359671] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:43,389 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:43,389 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-03-01 15:50:43,389 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032565846] [2022-03-01 15:50:43,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:43,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:50:43,390 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:43,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:50:43,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:50:43,390 INFO L87 Difference]: Start difference. First operand 8477 states and 24077 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) [2022-03-01 15:50:43,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:43,740 INFO L93 Difference]: Finished difference Result 8826 states and 24881 transitions. [2022-03-01 15:50:43,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-01 15:50:43,740 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 [2022-03-01 15:50:43,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:43,754 INFO L225 Difference]: With dead ends: 8826 [2022-03-01 15:50:43,754 INFO L226 Difference]: Without dead ends: 8778 [2022-03-01 15:50:43,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=254, Invalid=1152, Unknown=0, NotChecked=0, Total=1406 [2022-03-01 15:50:43,755 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 346 mSDsluCounter, 1303 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:43,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 1275 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 15:50:43,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8778 states. [2022-03-01 15:50:43,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8778 to 8473. [2022-03-01 15:50:43,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8473 states, 8472 states have (on average 2.840651558073654) internal successors, (24066), 8472 states have internal predecessors, (24066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:43,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8473 states to 8473 states and 24066 transitions. [2022-03-01 15:50:43,876 INFO L78 Accepts]: Start accepts. Automaton has 8473 states and 24066 transitions. Word has length 67 [2022-03-01 15:50:43,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:43,876 INFO L470 AbstractCegarLoop]: Abstraction has 8473 states and 24066 transitions. [2022-03-01 15:50:43,876 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) [2022-03-01 15:50:43,876 INFO L276 IsEmpty]: Start isEmpty. Operand 8473 states and 24066 transitions. [2022-03-01 15:50:43,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-01 15:50:43,886 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:43,887 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:43,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-03-01 15:50:44,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-03-01 15:50:44,087 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:44,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:44,087 INFO L85 PathProgramCache]: Analyzing trace with hash -932150795, now seen corresponding path program 42 times [2022-03-01 15:50:44,088 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:44,088 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722515900] [2022-03-01 15:50:44,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:44,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:44,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:44,167 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:50:44,168 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:44,168 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722515900] [2022-03-01 15:50:44,168 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722515900] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:44,168 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402539250] [2022-03-01 15:50:44,168 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:50:44,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:44,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:44,169 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:50:44,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-01 15:50:44,237 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 15:50:44,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:44,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-01 15:50:44,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:44,387 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:50:44,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:44,529 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:50:44,529 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402539250] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:44,529 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:44,529 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2022-03-01 15:50:44,529 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30979861] [2022-03-01 15:50:44,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:44,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 15:50:44,530 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:44,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 15:50:44,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-01 15:50:44,530 INFO L87 Difference]: Start difference. First operand 8473 states and 24066 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:44,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:44,625 INFO L93 Difference]: Finished difference Result 15310 states and 44184 transitions. [2022-03-01 15:50:44,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 15:50:44,626 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-03-01 15:50:44,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:44,652 INFO L225 Difference]: With dead ends: 15310 [2022-03-01 15:50:44,652 INFO L226 Difference]: Without dead ends: 15022 [2022-03-01 15:50:44,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 141 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-01 15:50:44,653 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 68 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:44,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 578 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:50:44,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15022 states. [2022-03-01 15:50:44,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15022 to 11818. [2022-03-01 15:50:44,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11818 states, 11817 states have (on average 2.88000338495388) internal successors, (34033), 11817 states have internal predecessors, (34033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:44,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11818 states to 11818 states and 34033 transitions. [2022-03-01 15:50:44,847 INFO L78 Accepts]: Start accepts. Automaton has 11818 states and 34033 transitions. Word has length 72 [2022-03-01 15:50:44,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:44,847 INFO L470 AbstractCegarLoop]: Abstraction has 11818 states and 34033 transitions. [2022-03-01 15:50:44,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:44,848 INFO L276 IsEmpty]: Start isEmpty. Operand 11818 states and 34033 transitions. [2022-03-01 15:50:44,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-01 15:50:44,863 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:44,863 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:44,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-03-01 15:50:45,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:45,064 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:45,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:45,064 INFO L85 PathProgramCache]: Analyzing trace with hash -2143276147, now seen corresponding path program 43 times [2022-03-01 15:50:45,064 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:45,065 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547040740] [2022-03-01 15:50:45,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:45,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:45,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:45,147 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:45,147 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:45,147 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547040740] [2022-03-01 15:50:45,147 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547040740] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:45,147 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325435473] [2022-03-01 15:50:45,147 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 15:50:45,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:45,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:45,148 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:50:45,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-01 15:50:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:45,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 15:50:45,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:45,444 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:45,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:45,544 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-03-01 15:50:45,544 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325435473] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:45,544 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:45,544 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 9] total 24 [2022-03-01 15:50:45,544 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841628218] [2022-03-01 15:50:45,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:45,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-01 15:50:45,545 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:45,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-01 15:50:45,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2022-03-01 15:50:45,545 INFO L87 Difference]: Start difference. First operand 11818 states and 34033 transitions. Second operand has 24 states, 24 states have (on average 4.625) internal successors, (111), 24 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) [2022-03-01 15:50:47,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:47,348 INFO L93 Difference]: Finished difference Result 28511 states and 81078 transitions. [2022-03-01 15:50:47,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-03-01 15:50:47,348 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.625) internal successors, (111), 24 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 77 [2022-03-01 15:50:47,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:47,399 INFO L225 Difference]: With dead ends: 28511 [2022-03-01 15:50:47,400 INFO L226 Difference]: Without dead ends: 28196 [2022-03-01 15:50:47,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 142 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5526 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2337, Invalid=11705, Unknown=0, NotChecked=0, Total=14042 [2022-03-01 15:50:47,401 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 992 mSDsluCounter, 2879 mSDsCounter, 0 mSdLazyCounter, 1471 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 2688 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:47,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [992 Valid, 2688 Invalid, 1590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1471 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 15:50:47,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28196 states. [2022-03-01 15:50:47,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28196 to 17561. [2022-03-01 15:50:47,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17561 states, 17560 states have (on average 2.8962984054669705) internal successors, (50859), 17560 states have internal predecessors, (50859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:47,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17561 states to 17561 states and 50859 transitions. [2022-03-01 15:50:47,765 INFO L78 Accepts]: Start accepts. Automaton has 17561 states and 50859 transitions. Word has length 77 [2022-03-01 15:50:47,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:47,765 INFO L470 AbstractCegarLoop]: Abstraction has 17561 states and 50859 transitions. [2022-03-01 15:50:47,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.625) internal successors, (111), 24 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) [2022-03-01 15:50:47,765 INFO L276 IsEmpty]: Start isEmpty. Operand 17561 states and 50859 transitions. [2022-03-01 15:50:47,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-01 15:50:47,789 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:47,789 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:47,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-03-01 15:50:47,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:47,990 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:47,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:47,990 INFO L85 PathProgramCache]: Analyzing trace with hash -2013945907, now seen corresponding path program 44 times [2022-03-01 15:50:47,990 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:47,990 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511155982] [2022-03-01 15:50:47,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:47,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:48,064 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:48,064 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:48,064 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511155982] [2022-03-01 15:50:48,064 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511155982] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:48,064 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676377848] [2022-03-01 15:50:48,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:50:48,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:48,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:48,066 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:50:48,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-01 15:50:48,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:50:48,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:48,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 15:50:48,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:48,362 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:48,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:48,458 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-01 15:50:48,459 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676377848] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:48,459 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:48,459 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 10] total 25 [2022-03-01 15:50:48,459 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223736712] [2022-03-01 15:50:48,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:48,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-01 15:50:48,459 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:48,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-01 15:50:48,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2022-03-01 15:50:48,460 INFO L87 Difference]: Start difference. First operand 17561 states and 50859 transitions. Second operand has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 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) [2022-03-01 15:50:51,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:51,593 INFO L93 Difference]: Finished difference Result 50708 states and 145022 transitions. [2022-03-01 15:50:51,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2022-03-01 15:50:51,594 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 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 77 [2022-03-01 15:50:51,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:51,716 INFO L225 Difference]: With dead ends: 50708 [2022-03-01 15:50:51,717 INFO L226 Difference]: Without dead ends: 50348 [2022-03-01 15:50:51,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12624 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4987, Invalid=24769, Unknown=0, NotChecked=0, Total=29756 [2022-03-01 15:50:51,720 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 1151 mSDsluCounter, 3178 mSDsCounter, 0 mSdLazyCounter, 1628 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 2967 SdHoareTripleChecker+Invalid, 1826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:51,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1151 Valid, 2967 Invalid, 1826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1628 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 15:50:51,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50348 states. [2022-03-01 15:50:52,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50348 to 24277. [2022-03-01 15:50:52,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24277 states, 24276 states have (on average 2.902619871478003) internal successors, (70464), 24276 states have internal predecessors, (70464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:52,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24277 states to 24277 states and 70464 transitions. [2022-03-01 15:50:52,485 INFO L78 Accepts]: Start accepts. Automaton has 24277 states and 70464 transitions. Word has length 77 [2022-03-01 15:50:52,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:52,485 INFO L470 AbstractCegarLoop]: Abstraction has 24277 states and 70464 transitions. [2022-03-01 15:50:52,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 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) [2022-03-01 15:50:52,485 INFO L276 IsEmpty]: Start isEmpty. Operand 24277 states and 70464 transitions. [2022-03-01 15:50:52,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-01 15:50:52,521 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:52,521 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:52,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-03-01 15:50:52,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-03-01 15:50:52,722 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:52,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:52,722 INFO L85 PathProgramCache]: Analyzing trace with hash 407986989, now seen corresponding path program 45 times [2022-03-01 15:50:52,722 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:52,722 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6759467] [2022-03-01 15:50:52,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:52,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:52,795 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:50:52,795 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:52,795 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6759467] [2022-03-01 15:50:52,795 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6759467] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:52,795 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599971784] [2022-03-01 15:50:52,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:50:52,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:52,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:52,796 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:50:52,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-03-01 15:50:52,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-01 15:50:52,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:52,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 15:50:52,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:53,081 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:53,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:53,186 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-01 15:50:53,187 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599971784] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:53,187 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:53,187 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 10] total 25 [2022-03-01 15:50:53,187 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859644617] [2022-03-01 15:50:53,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:53,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-01 15:50:53,187 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:53,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-01 15:50:53,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2022-03-01 15:50:53,188 INFO L87 Difference]: Start difference. First operand 24277 states and 70464 transitions. Second operand has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 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) [2022-03-01 15:50:55,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:55,657 INFO L93 Difference]: Finished difference Result 45069 states and 129453 transitions. [2022-03-01 15:50:55,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-03-01 15:50:55,657 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 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 77 [2022-03-01 15:50:55,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:55,757 INFO L225 Difference]: With dead ends: 45069 [2022-03-01 15:50:55,757 INFO L226 Difference]: Without dead ends: 45009 [2022-03-01 15:50:55,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9226 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3987, Invalid=18663, Unknown=0, NotChecked=0, Total=22650 [2022-03-01 15:50:55,759 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 1082 mSDsluCounter, 2273 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 2149 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:55,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1082 Valid, 2149 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 15:50:55,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45009 states. [2022-03-01 15:50:56,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45009 to 28437. [2022-03-01 15:50:56,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28437 states, 28436 states have (on average 2.914333942889295) internal successors, (82872), 28436 states have internal predecessors, (82872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:56,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28437 states to 28437 states and 82872 transitions. [2022-03-01 15:50:56,560 INFO L78 Accepts]: Start accepts. Automaton has 28437 states and 82872 transitions. Word has length 77 [2022-03-01 15:50:56,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:56,561 INFO L470 AbstractCegarLoop]: Abstraction has 28437 states and 82872 transitions. [2022-03-01 15:50:56,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 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) [2022-03-01 15:50:56,561 INFO L276 IsEmpty]: Start isEmpty. Operand 28437 states and 82872 transitions. [2022-03-01 15:50:56,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-01 15:50:56,603 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:56,603 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:56,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-03-01 15:50:56,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2022-03-01 15:50:56,804 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:56,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:56,804 INFO L85 PathProgramCache]: Analyzing trace with hash 873766339, now seen corresponding path program 46 times [2022-03-01 15:50:56,804 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:56,804 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953495993] [2022-03-01 15:50:56,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:56,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:56,874 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:50:56,874 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:56,874 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953495993] [2022-03-01 15:50:56,874 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953495993] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:56,874 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596783807] [2022-03-01 15:50:56,874 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:50:56,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:56,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:56,877 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:50:56,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-03-01 15:50:56,937 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:50:56,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:56,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 15:50:56,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:57,144 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:57,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:57,269 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-01 15:50:57,269 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596783807] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:57,269 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:57,269 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 10] total 25 [2022-03-01 15:50:57,269 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608581419] [2022-03-01 15:50:57,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:57,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-01 15:50:57,270 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:57,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-01 15:50:57,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2022-03-01 15:50:57,270 INFO L87 Difference]: Start difference. First operand 28437 states and 82872 transitions. Second operand has 25 states, 25 states have (on average 4.64) internal successors, (116), 25 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:59,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:59,106 INFO L93 Difference]: Finished difference Result 42790 states and 122925 transitions. [2022-03-01 15:50:59,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-03-01 15:50:59,106 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.64) internal successors, (116), 25 states have internal predecessors, (116), 0 states have call successors, (0), 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 77 [2022-03-01 15:50:59,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:59,183 INFO L225 Difference]: With dead ends: 42790 [2022-03-01 15:50:59,183 INFO L226 Difference]: Without dead ends: 42718 [2022-03-01 15:50:59,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5144 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2056, Invalid=11986, Unknown=0, NotChecked=0, Total=14042 [2022-03-01 15:50:59,184 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 846 mSDsluCounter, 2061 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 1953 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:59,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [846 Valid, 1953 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:50:59,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42718 states. [2022-03-01 15:50:59,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42718 to 22217. [2022-03-01 15:50:59,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22217 states, 22216 states have (on average 2.9081292761973354) internal successors, (64607), 22216 states have internal predecessors, (64607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:59,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22217 states to 22217 states and 64607 transitions. [2022-03-01 15:50:59,845 INFO L78 Accepts]: Start accepts. Automaton has 22217 states and 64607 transitions. Word has length 77 [2022-03-01 15:50:59,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:59,845 INFO L470 AbstractCegarLoop]: Abstraction has 22217 states and 64607 transitions. [2022-03-01 15:50:59,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.64) internal successors, (116), 25 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:59,846 INFO L276 IsEmpty]: Start isEmpty. Operand 22217 states and 64607 transitions. [2022-03-01 15:50:59,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-01 15:50:59,876 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:59,876 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:59,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-03-01 15:51:00,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2022-03-01 15:51:00,076 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:51:00,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:51:00,077 INFO L85 PathProgramCache]: Analyzing trace with hash 576071619, now seen corresponding path program 47 times [2022-03-01 15:51:00,077 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:51:00,077 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141122110] [2022-03-01 15:51:00,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:51:00,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:51:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:00,165 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:00,166 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:51:00,166 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141122110] [2022-03-01 15:51:00,166 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141122110] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:51:00,166 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133716393] [2022-03-01 15:51:00,166 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:51:00,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:00,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:51:00,167 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:51:00,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-03-01 15:51:00,256 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-01 15:51:00,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:51:00,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 15:51:00,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:51:00,501 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:00,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:51:00,609 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-01 15:51:00,609 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133716393] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:51:00,609 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:51:00,609 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 26 [2022-03-01 15:51:00,609 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021757004] [2022-03-01 15:51:00,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:51:00,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-01 15:51:00,610 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:51:00,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-01 15:51:00,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2022-03-01 15:51:00,610 INFO L87 Difference]: Start difference. First operand 22217 states and 64607 transitions. Second operand has 26 states, 26 states have (on average 4.5) internal successors, (117), 26 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:51:02,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:51:02,229 INFO L93 Difference]: Finished difference Result 32563 states and 93461 transitions. [2022-03-01 15:51:02,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-03-01 15:51:02,230 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.5) internal successors, (117), 26 states have internal predecessors, (117), 0 states have call successors, (0), 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 77 [2022-03-01 15:51:02,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:51:02,292 INFO L225 Difference]: With dead ends: 32563 [2022-03-01 15:51:02,293 INFO L226 Difference]: Without dead ends: 32479 [2022-03-01 15:51:02,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4112 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1613, Invalid=9943, Unknown=0, NotChecked=0, Total=11556 [2022-03-01 15:51:02,294 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 680 mSDsluCounter, 2523 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 2395 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:51:02,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [680 Valid, 2395 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 15:51:02,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32479 states. [2022-03-01 15:51:02,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32479 to 21561. [2022-03-01 15:51:02,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21561 states, 21560 states have (on average 2.9099721706864563) internal successors, (62739), 21560 states have internal predecessors, (62739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:51:02,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21561 states to 21561 states and 62739 transitions. [2022-03-01 15:51:02,757 INFO L78 Accepts]: Start accepts. Automaton has 21561 states and 62739 transitions. Word has length 77 [2022-03-01 15:51:02,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:51:02,757 INFO L470 AbstractCegarLoop]: Abstraction has 21561 states and 62739 transitions. [2022-03-01 15:51:02,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.5) internal successors, (117), 26 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:51:02,757 INFO L276 IsEmpty]: Start isEmpty. Operand 21561 states and 62739 transitions. [2022-03-01 15:51:02,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-01 15:51:02,788 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:51:02,788 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:51:02,804 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-03-01 15:51:02,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:02,989 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:51:02,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:51:02,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1921884175, now seen corresponding path program 48 times [2022-03-01 15:51:02,989 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:51:02,989 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631426225] [2022-03-01 15:51:02,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:51:02,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:51:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:03,072 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:51:03,072 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:51:03,072 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631426225] [2022-03-01 15:51:03,072 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631426225] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:51:03,072 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752298074] [2022-03-01 15:51:03,072 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:51:03,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:03,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:51:03,074 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:51:03,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-03-01 15:51:03,145 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-01 15:51:03,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:51:03,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 15:51:03,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:51:03,459 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:03,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:51:03,560 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-01 15:51:03,570 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752298074] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:51:03,570 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:51:03,570 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 10] total 25 [2022-03-01 15:51:03,570 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107991964] [2022-03-01 15:51:03,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:51:03,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-01 15:51:03,571 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:51:03,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-01 15:51:03,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2022-03-01 15:51:03,571 INFO L87 Difference]: Start difference. First operand 21561 states and 62739 transitions. Second operand has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 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) [2022-03-01 15:51:06,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:51:06,303 INFO L93 Difference]: Finished difference Result 62616 states and 180846 transitions. [2022-03-01 15:51:06,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-03-01 15:51:06,303 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 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 77 [2022-03-01 15:51:06,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:51:06,526 INFO L225 Difference]: With dead ends: 62616 [2022-03-01 15:51:06,526 INFO L226 Difference]: Without dead ends: 62421 [2022-03-01 15:51:06,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11591 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4718, Invalid=22342, Unknown=0, NotChecked=0, Total=27060 [2022-03-01 15:51:06,527 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 1391 mSDsluCounter, 2191 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 2053 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:51:06,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1391 Valid, 2053 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1281 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 15:51:06,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62421 states. [2022-03-01 15:51:07,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62421 to 34189. [2022-03-01 15:51:07,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34189 states, 34188 states have (on average 2.9289224289224287) internal successors, (100134), 34188 states have internal predecessors, (100134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:51:07,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34189 states to 34189 states and 100134 transitions. [2022-03-01 15:51:07,521 INFO L78 Accepts]: Start accepts. Automaton has 34189 states and 100134 transitions. Word has length 77 [2022-03-01 15:51:07,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:51:07,521 INFO L470 AbstractCegarLoop]: Abstraction has 34189 states and 100134 transitions. [2022-03-01 15:51:07,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 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) [2022-03-01 15:51:07,521 INFO L276 IsEmpty]: Start isEmpty. Operand 34189 states and 100134 transitions. [2022-03-01 15:51:07,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-01 15:51:07,572 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:51:07,572 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:51:07,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-03-01 15:51:07,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-03-01 15:51:07,773 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:51:07,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:51:07,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1907303771, now seen corresponding path program 49 times [2022-03-01 15:51:07,774 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:51:07,774 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6321796] [2022-03-01 15:51:07,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:51:07,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:51:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:07,856 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:51:07,856 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:51:07,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6321796] [2022-03-01 15:51:07,856 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6321796] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:51:07,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450024451] [2022-03-01 15:51:07,857 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 15:51:07,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:07,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:51:07,858 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:51:07,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-03-01 15:51:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:07,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 15:51:07,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:51:08,334 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:08,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:51:08,445 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-01 15:51:08,445 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450024451] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:51:08,445 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:51:08,445 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 10] total 25 [2022-03-01 15:51:08,445 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545770000] [2022-03-01 15:51:08,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:51:08,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-01 15:51:08,445 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:51:08,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-01 15:51:08,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2022-03-01 15:51:08,446 INFO L87 Difference]: Start difference. First operand 34189 states and 100134 transitions. Second operand has 25 states, 25 states have (on average 4.64) internal successors, (116), 25 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:51:10,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:51:10,594 INFO L93 Difference]: Finished difference Result 52418 states and 151701 transitions. [2022-03-01 15:51:10,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-03-01 15:51:10,594 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.64) internal successors, (116), 25 states have internal predecessors, (116), 0 states have call successors, (0), 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 77 [2022-03-01 15:51:10,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:51:10,715 INFO L225 Difference]: With dead ends: 52418 [2022-03-01 15:51:10,715 INFO L226 Difference]: Without dead ends: 52346 [2022-03-01 15:51:10,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7497 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2747, Invalid=16159, Unknown=0, NotChecked=0, Total=18906 [2022-03-01 15:51:10,716 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 932 mSDsluCounter, 2453 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 2293 SdHoareTripleChecker+Invalid, 1488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 15:51:10,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [932 Valid, 2293 Invalid, 1488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1361 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 15:51:10,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52346 states. [2022-03-01 15:51:11,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52346 to 32901. [2022-03-01 15:51:11,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32901 states, 32900 states have (on average 2.9253495440729482) internal successors, (96244), 32900 states have internal predecessors, (96244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:51:11,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32901 states to 32901 states and 96244 transitions. [2022-03-01 15:51:11,634 INFO L78 Accepts]: Start accepts. Automaton has 32901 states and 96244 transitions. Word has length 77 [2022-03-01 15:51:11,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:51:11,634 INFO L470 AbstractCegarLoop]: Abstraction has 32901 states and 96244 transitions. [2022-03-01 15:51:11,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.64) internal successors, (116), 25 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:51:11,634 INFO L276 IsEmpty]: Start isEmpty. Operand 32901 states and 96244 transitions. [2022-03-01 15:51:11,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-01 15:51:11,685 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:51:11,685 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:51:11,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-03-01 15:51:11,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:11,886 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:51:11,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:51:11,886 INFO L85 PathProgramCache]: Analyzing trace with hash 305202183, now seen corresponding path program 50 times [2022-03-01 15:51:11,886 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:51:11,886 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217675629] [2022-03-01 15:51:11,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:51:11,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:51:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:11,968 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:11,968 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:51:11,968 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217675629] [2022-03-01 15:51:11,968 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217675629] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:51:11,968 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090689223] [2022-03-01 15:51:11,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:51:11,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:11,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:51:11,977 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:51:11,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-03-01 15:51:12,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:51:12,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:51:12,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 15:51:12,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:51:12,288 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:12,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:51:12,409 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:51:12,410 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090689223] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:51:12,410 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:51:12,410 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 27 [2022-03-01 15:51:12,410 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469392354] [2022-03-01 15:51:12,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:51:12,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 15:51:12,410 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:51:12,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 15:51:12,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=607, Unknown=0, NotChecked=0, Total=702 [2022-03-01 15:51:12,411 INFO L87 Difference]: Start difference. First operand 32901 states and 96244 transitions. Second operand has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:51:14,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:51:14,616 INFO L93 Difference]: Finished difference Result 59882 states and 174146 transitions. [2022-03-01 15:51:14,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-03-01 15:51:14,616 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-01 15:51:14,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:51:14,768 INFO L225 Difference]: With dead ends: 59882 [2022-03-01 15:51:14,768 INFO L226 Difference]: Without dead ends: 59762 [2022-03-01 15:51:14,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8127 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2690, Invalid=17902, Unknown=0, NotChecked=0, Total=20592 [2022-03-01 15:51:14,769 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 934 mSDsluCounter, 2549 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 2435 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:51:14,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [934 Valid, 2435 Invalid, 1461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 15:51:14,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59762 states. [2022-03-01 15:51:15,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59762 to 29121. [2022-03-01 15:51:15,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29121 states, 29120 states have (on average 2.9258585164835167) internal successors, (85201), 29120 states have internal predecessors, (85201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:51:15,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29121 states to 29121 states and 85201 transitions. [2022-03-01 15:51:15,800 INFO L78 Accepts]: Start accepts. Automaton has 29121 states and 85201 transitions. Word has length 77 [2022-03-01 15:51:15,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:51:15,800 INFO L470 AbstractCegarLoop]: Abstraction has 29121 states and 85201 transitions. [2022-03-01 15:51:15,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:51:15,801 INFO L276 IsEmpty]: Start isEmpty. Operand 29121 states and 85201 transitions. [2022-03-01 15:51:15,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-01 15:51:15,846 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:51:15,846 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:51:15,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-03-01 15:51:16,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:16,046 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:51:16,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:51:16,047 INFO L85 PathProgramCache]: Analyzing trace with hash -189752111, now seen corresponding path program 51 times [2022-03-01 15:51:16,047 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:51:16,047 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465495265] [2022-03-01 15:51:16,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:51:16,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:51:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:16,129 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:16,129 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:51:16,129 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465495265] [2022-03-01 15:51:16,129 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465495265] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:51:16,130 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090911198] [2022-03-01 15:51:16,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:51:16,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:16,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:51:16,131 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:51:16,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-03-01 15:51:16,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-01 15:51:16,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:51:16,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 15:51:16,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:51:16,408 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:16,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:51:16,516 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:51:16,517 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090911198] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:51:16,517 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:51:16,517 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 27 [2022-03-01 15:51:16,517 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967823605] [2022-03-01 15:51:16,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:51:16,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 15:51:16,517 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:51:16,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 15:51:16,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2022-03-01 15:51:16,518 INFO L87 Difference]: Start difference. First operand 29121 states and 85201 transitions. Second operand has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:51:18,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:51:18,792 INFO L93 Difference]: Finished difference Result 68515 states and 199472 transitions. [2022-03-01 15:51:18,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-03-01 15:51:18,792 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-01 15:51:18,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:51:19,082 INFO L225 Difference]: With dead ends: 68515 [2022-03-01 15:51:19,082 INFO L226 Difference]: Without dead ends: 68395 [2022-03-01 15:51:19,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9170 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3362, Invalid=19288, Unknown=0, NotChecked=0, Total=22650 [2022-03-01 15:51:19,083 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 1302 mSDsluCounter, 2272 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 2192 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:51:19,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1302 Valid, 2192 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:51:19,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68395 states. [2022-03-01 15:51:19,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68395 to 40169. [2022-03-01 15:51:20,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40169 states, 40168 states have (on average 2.9553624775941048) internal successors, (118711), 40168 states have internal predecessors, (118711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:51:20,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40169 states to 40169 states and 118711 transitions. [2022-03-01 15:51:20,279 INFO L78 Accepts]: Start accepts. Automaton has 40169 states and 118711 transitions. Word has length 77 [2022-03-01 15:51:20,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:51:20,279 INFO L470 AbstractCegarLoop]: Abstraction has 40169 states and 118711 transitions. [2022-03-01 15:51:20,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:51:20,280 INFO L276 IsEmpty]: Start isEmpty. Operand 40169 states and 118711 transitions. [2022-03-01 15:51:20,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-01 15:51:20,340 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:51:20,341 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:51:20,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-03-01 15:51:20,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2022-03-01 15:51:20,551 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:51:20,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:51:20,552 INFO L85 PathProgramCache]: Analyzing trace with hash 43687679, now seen corresponding path program 52 times [2022-03-01 15:51:20,552 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:51:20,552 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936874239] [2022-03-01 15:51:20,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:51:20,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:51:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:20,635 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:20,635 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:51:20,635 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936874239] [2022-03-01 15:51:20,635 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936874239] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:51:20,635 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356065830] [2022-03-01 15:51:20,636 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:51:20,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:20,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:51:20,644 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:51:20,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-03-01 15:51:20,712 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:51:20,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:51:20,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 15:51:20,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:51:20,932 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:20,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:51:21,056 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:51:21,056 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356065830] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:51:21,056 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:51:21,056 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 27 [2022-03-01 15:51:21,056 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555893673] [2022-03-01 15:51:21,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:51:21,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 15:51:21,057 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:51:21,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 15:51:21,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2022-03-01 15:51:21,057 INFO L87 Difference]: Start difference. First operand 40169 states and 118711 transitions. Second operand has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:51:22,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:51:22,346 INFO L93 Difference]: Finished difference Result 49044 states and 143220 transitions. [2022-03-01 15:51:22,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-03-01 15:51:22,346 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-01 15:51:22,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:51:22,537 INFO L225 Difference]: With dead ends: 49044 [2022-03-01 15:51:22,537 INFO L226 Difference]: Without dead ends: 48948 [2022-03-01 15:51:22,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2974 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1296, Invalid=7260, Unknown=0, NotChecked=0, Total=8556 [2022-03-01 15:51:22,538 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 808 mSDsluCounter, 2264 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 2164 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:51:22,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [808 Valid, 2164 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:51:22,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48948 states. [2022-03-01 15:51:23,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48948 to 43461. [2022-03-01 15:51:23,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43461 states, 43460 states have (on average 2.9549010584445465) internal successors, (128420), 43460 states have internal predecessors, (128420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:51:23,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43461 states to 43461 states and 128420 transitions. [2022-03-01 15:51:23,516 INFO L78 Accepts]: Start accepts. Automaton has 43461 states and 128420 transitions. Word has length 77 [2022-03-01 15:51:23,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:51:23,516 INFO L470 AbstractCegarLoop]: Abstraction has 43461 states and 128420 transitions. [2022-03-01 15:51:23,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:51:23,516 INFO L276 IsEmpty]: Start isEmpty. Operand 43461 states and 128420 transitions. [2022-03-01 15:51:23,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-01 15:51:23,585 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:51:23,585 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:51:23,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-03-01 15:51:23,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:23,795 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:51:23,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:51:23,796 INFO L85 PathProgramCache]: Analyzing trace with hash -15926743, now seen corresponding path program 53 times [2022-03-01 15:51:23,796 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:51:23,796 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139669059] [2022-03-01 15:51:23,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:51:23,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:51:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:24,011 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:24,011 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:51:24,012 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139669059] [2022-03-01 15:51:24,012 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139669059] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:51:24,012 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911818748] [2022-03-01 15:51:24,012 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:51:24,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:24,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:51:24,013 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:51:24,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-03-01 15:51:24,081 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-01 15:51:24,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:51:24,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 15:51:24,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:51:24,288 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:24,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:51:24,390 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-01 15:51:24,391 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911818748] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:51:24,391 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:51:24,391 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 26 [2022-03-01 15:51:24,391 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540026144] [2022-03-01 15:51:24,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:51:24,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-01 15:51:24,391 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:51:24,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-01 15:51:24,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2022-03-01 15:51:24,392 INFO L87 Difference]: Start difference. First operand 43461 states and 128420 transitions. Second operand has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 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) [2022-03-01 15:51:27,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:51:27,130 INFO L93 Difference]: Finished difference Result 67512 states and 196403 transitions. [2022-03-01 15:51:27,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-03-01 15:51:27,131 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 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 77 [2022-03-01 15:51:27,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:51:27,285 INFO L225 Difference]: With dead ends: 67512 [2022-03-01 15:51:27,286 INFO L226 Difference]: Without dead ends: 67152 [2022-03-01 15:51:27,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9167 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3648, Invalid=19002, Unknown=0, NotChecked=0, Total=22650 [2022-03-01 15:51:27,288 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 893 mSDsluCounter, 3393 mSDsCounter, 0 mSdLazyCounter, 1893 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 3157 SdHoareTripleChecker+Invalid, 2023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 15:51:27,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [893 Valid, 3157 Invalid, 2023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1893 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 15:51:27,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67152 states. [2022-03-01 15:51:28,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67152 to 42309. [2022-03-01 15:51:28,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42309 states, 42308 states have (on average 2.9459203933062303) internal successors, (124636), 42308 states have internal predecessors, (124636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:51:28,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42309 states to 42309 states and 124636 transitions. [2022-03-01 15:51:28,423 INFO L78 Accepts]: Start accepts. Automaton has 42309 states and 124636 transitions. Word has length 77 [2022-03-01 15:51:28,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:51:28,423 INFO L470 AbstractCegarLoop]: Abstraction has 42309 states and 124636 transitions. [2022-03-01 15:51:28,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 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) [2022-03-01 15:51:28,423 INFO L276 IsEmpty]: Start isEmpty. Operand 42309 states and 124636 transitions. [2022-03-01 15:51:28,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-01 15:51:28,489 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:51:28,489 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:51:28,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-03-01 15:51:28,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-03-01 15:51:28,690 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:51:28,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:51:28,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1862558545, now seen corresponding path program 54 times [2022-03-01 15:51:28,690 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:51:28,690 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192072320] [2022-03-01 15:51:28,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:51:28,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:51:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:28,784 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:28,784 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:51:28,784 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192072320] [2022-03-01 15:51:28,784 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192072320] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:51:28,784 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748969933] [2022-03-01 15:51:28,785 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:51:28,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:28,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:51:28,786 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:51:28,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-03-01 15:51:28,863 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-01 15:51:28,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:51:28,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 15:51:28,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:51:29,231 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:29,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:51:29,336 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-01 15:51:29,336 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748969933] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:51:29,336 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:51:29,336 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 26 [2022-03-01 15:51:29,336 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365989060] [2022-03-01 15:51:29,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:51:29,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-01 15:51:29,336 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:51:29,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-01 15:51:29,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2022-03-01 15:51:29,337 INFO L87 Difference]: Start difference. First operand 42309 states and 124636 transitions. Second operand has 26 states, 26 states have (on average 4.384615384615385) internal successors, (114), 26 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:51:32,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:51:32,362 INFO L93 Difference]: Finished difference Result 81273 states and 236179 transitions. [2022-03-01 15:51:32,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2022-03-01 15:51:32,363 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.384615384615385) internal successors, (114), 26 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-01 15:51:32,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:51:32,664 INFO L225 Difference]: With dead ends: 81273 [2022-03-01 15:51:32,664 INFO L226 Difference]: Without dead ends: 80973 [2022-03-01 15:51:32,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10846 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4184, Invalid=22876, Unknown=0, NotChecked=0, Total=27060 [2022-03-01 15:51:32,665 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 1098 mSDsluCounter, 3638 mSDsCounter, 0 mSdLazyCounter, 1876 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 3449 SdHoareTripleChecker+Invalid, 2056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 15:51:32,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1098 Valid, 3449 Invalid, 2056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1876 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 15:51:32,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80973 states. [2022-03-01 15:51:33,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80973 to 50781. [2022-03-01 15:51:33,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50781 states, 50780 states have (on average 2.952382827884994) internal successors, (149922), 50780 states have internal predecessors, (149922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:51:33,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50781 states to 50781 states and 149922 transitions. [2022-03-01 15:51:33,851 INFO L78 Accepts]: Start accepts. Automaton has 50781 states and 149922 transitions. Word has length 77 [2022-03-01 15:51:33,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:51:33,852 INFO L470 AbstractCegarLoop]: Abstraction has 50781 states and 149922 transitions. [2022-03-01 15:51:33,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.384615384615385) internal successors, (114), 26 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:51:33,852 INFO L276 IsEmpty]: Start isEmpty. Operand 50781 states and 149922 transitions. [2022-03-01 15:51:34,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-01 15:51:34,115 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:51:34,115 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:51:34,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-03-01 15:51:34,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-03-01 15:51:34,319 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:51:34,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:51:34,320 INFO L85 PathProgramCache]: Analyzing trace with hash -2092365519, now seen corresponding path program 55 times [2022-03-01 15:51:34,320 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:51:34,320 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050029882] [2022-03-01 15:51:34,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:51:34,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:51:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:34,386 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:51:34,386 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:51:34,386 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050029882] [2022-03-01 15:51:34,386 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050029882] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:51:34,386 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731918862] [2022-03-01 15:51:34,386 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 15:51:34,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:34,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:51:34,387 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:51:34,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-03-01 15:51:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:34,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 15:51:34,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:51:34,665 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:34,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:51:34,768 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-01 15:51:34,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731918862] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:51:34,769 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:51:34,769 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 10] total 25 [2022-03-01 15:51:34,769 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810486908] [2022-03-01 15:51:34,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:51:34,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-01 15:51:34,769 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:51:34,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-01 15:51:34,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2022-03-01 15:51:34,770 INFO L87 Difference]: Start difference. First operand 50781 states and 149922 transitions. Second operand has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 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) [2022-03-01 15:51:38,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:51:38,142 INFO L93 Difference]: Finished difference Result 116411 states and 340067 transitions. [2022-03-01 15:51:38,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2022-03-01 15:51:38,143 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 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 77 [2022-03-01 15:51:38,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:51:38,603 INFO L225 Difference]: With dead ends: 116411 [2022-03-01 15:51:38,603 INFO L226 Difference]: Without dead ends: 116231 [2022-03-01 15:51:38,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13242 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=4854, Invalid=27726, Unknown=0, NotChecked=0, Total=32580 [2022-03-01 15:51:38,604 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 1135 mSDsluCounter, 2300 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 2201 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 15:51:38,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1135 Valid, 2201 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1304 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 15:51:38,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116231 states. [2022-03-01 15:51:40,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116231 to 62961. [2022-03-01 15:51:40,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62961 states, 62960 states have (on average 2.9530654383735704) internal successors, (185925), 62960 states have internal predecessors, (185925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:51:40,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62961 states to 62961 states and 185925 transitions. [2022-03-01 15:51:40,408 INFO L78 Accepts]: Start accepts. Automaton has 62961 states and 185925 transitions. Word has length 77 [2022-03-01 15:51:40,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:51:40,408 INFO L470 AbstractCegarLoop]: Abstraction has 62961 states and 185925 transitions. [2022-03-01 15:51:40,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 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) [2022-03-01 15:51:40,408 INFO L276 IsEmpty]: Start isEmpty. Operand 62961 states and 185925 transitions. [2022-03-01 15:51:40,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-01 15:51:40,757 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:51:40,758 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:51:40,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-03-01 15:51:40,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:40,958 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:51:40,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:51:40,959 INFO L85 PathProgramCache]: Analyzing trace with hash 324405281, now seen corresponding path program 56 times [2022-03-01 15:51:40,959 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:51:40,959 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950396648] [2022-03-01 15:51:40,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:51:40,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:51:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:41,043 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:41,043 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:51:41,043 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950396648] [2022-03-01 15:51:41,043 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950396648] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:51:41,043 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831172511] [2022-03-01 15:51:41,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:51:41,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:41,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:51:41,052 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:51:41,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-03-01 15:51:41,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:51:41,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:51:41,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 15:51:41,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:51:41,370 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:41,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:51:41,487 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:51:41,487 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831172511] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:51:41,488 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:51:41,488 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 27 [2022-03-01 15:51:41,488 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675114402] [2022-03-01 15:51:41,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:51:41,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 15:51:41,488 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:51:41,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 15:51:41,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2022-03-01 15:51:41,488 INFO L87 Difference]: Start difference. First operand 62961 states and 185925 transitions. Second operand has 27 states, 27 states have (on average 4.333333333333333) internal successors, (117), 27 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:51:43,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:51:43,174 INFO L93 Difference]: Finished difference Result 108080 states and 318427 transitions. [2022-03-01 15:51:43,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-03-01 15:51:43,175 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.333333333333333) internal successors, (117), 27 states have internal predecessors, (117), 0 states have call successors, (0), 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 77 [2022-03-01 15:51:43,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:51:43,599 INFO L225 Difference]: With dead ends: 108080 [2022-03-01 15:51:43,599 INFO L226 Difference]: Without dead ends: 107972 [2022-03-01 15:51:43,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2735 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1182, Invalid=7190, Unknown=0, NotChecked=0, Total=8372 [2022-03-01 15:51:43,600 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 916 mSDsluCounter, 2082 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 1964 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:51:43,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [916 Valid, 1964 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:51:43,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107972 states. [2022-03-01 15:51:45,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107972 to 91801. [2022-03-01 15:51:45,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91801 states, 91800 states have (on average 2.9727995642701526) internal successors, (272903), 91800 states have internal predecessors, (272903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:51:46,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91801 states to 91801 states and 272903 transitions. [2022-03-01 15:51:46,150 INFO L78 Accepts]: Start accepts. Automaton has 91801 states and 272903 transitions. Word has length 77 [2022-03-01 15:51:46,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:51:46,150 INFO L470 AbstractCegarLoop]: Abstraction has 91801 states and 272903 transitions. [2022-03-01 15:51:46,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.333333333333333) internal successors, (117), 27 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:51:46,150 INFO L276 IsEmpty]: Start isEmpty. Operand 91801 states and 272903 transitions. [2022-03-01 15:51:46,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-01 15:51:46,296 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:51:46,296 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:51:46,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-03-01 15:51:46,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:46,498 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:51:46,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:51:46,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1543677713, now seen corresponding path program 57 times [2022-03-01 15:51:46,498 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:51:46,498 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102205990] [2022-03-01 15:51:46,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:51:46,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:51:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:46,569 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:46,570 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:51:46,570 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102205990] [2022-03-01 15:51:46,570 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102205990] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:51:46,570 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703840430] [2022-03-01 15:51:46,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:51:46,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:46,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:51:46,571 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:51:46,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-03-01 15:51:46,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-01 15:51:46,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:51:46,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 15:51:46,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:51:46,862 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:46,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:51:46,966 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:51:46,966 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703840430] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:51:46,966 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:51:46,966 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 26 [2022-03-01 15:51:46,966 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835790762] [2022-03-01 15:51:46,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:51:46,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-01 15:51:46,967 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:51:46,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-01 15:51:46,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2022-03-01 15:51:46,967 INFO L87 Difference]: Start difference. First operand 91801 states and 272903 transitions. Second operand has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 26 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:51:50,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:51:50,804 INFO L93 Difference]: Finished difference Result 139731 states and 410454 transitions. [2022-03-01 15:51:50,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2022-03-01 15:51:50,805 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 26 states have internal predecessors, (116), 0 states have call successors, (0), 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 77 [2022-03-01 15:51:50,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:51:51,384 INFO L225 Difference]: With dead ends: 139731 [2022-03-01 15:51:51,384 INFO L226 Difference]: Without dead ends: 139446 [2022-03-01 15:51:51,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14023 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=5085, Invalid=27135, Unknown=0, NotChecked=0, Total=32220 [2022-03-01 15:51:51,386 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 1214 mSDsluCounter, 3705 mSDsCounter, 0 mSdLazyCounter, 1981 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 3514 SdHoareTripleChecker+Invalid, 2175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 15:51:51,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1214 Valid, 3514 Invalid, 2175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1981 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 15:51:51,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139446 states. [2022-03-01 15:51:53,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139446 to 93029. [2022-03-01 15:51:53,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93029 states, 93028 states have (on average 2.971707442920411) internal successors, (276452), 93028 states have internal predecessors, (276452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:51:54,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93029 states to 93029 states and 276452 transitions. [2022-03-01 15:51:54,454 INFO L78 Accepts]: Start accepts. Automaton has 93029 states and 276452 transitions. Word has length 77 [2022-03-01 15:51:54,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:51:54,454 INFO L470 AbstractCegarLoop]: Abstraction has 93029 states and 276452 transitions. [2022-03-01 15:51:54,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 26 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:51:54,454 INFO L276 IsEmpty]: Start isEmpty. Operand 93029 states and 276452 transitions. [2022-03-01 15:51:54,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-01 15:51:54,598 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:51:54,598 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:51:54,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-03-01 15:51:54,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:54,799 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:51:54,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:51:54,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1396411191, now seen corresponding path program 58 times [2022-03-01 15:51:54,800 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:51:54,800 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508760192] [2022-03-01 15:51:54,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:51:54,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:51:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:54,882 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:54,883 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:51:54,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508760192] [2022-03-01 15:51:54,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508760192] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:51:54,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231887255] [2022-03-01 15:51:54,883 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:51:54,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:54,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:51:54,884 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:51:54,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-03-01 15:51:54,954 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:51:54,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:51:54,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 15:51:54,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:51:55,165 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:55,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:51:55,277 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:55,277 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231887255] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:51:55,277 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:51:55,277 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 27 [2022-03-01 15:51:55,277 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323550454] [2022-03-01 15:51:55,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:51:55,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 15:51:55,278 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:51:55,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 15:51:55,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=606, Unknown=0, NotChecked=0, Total=702 [2022-03-01 15:51:55,278 INFO L87 Difference]: Start difference. First operand 93029 states and 276452 transitions. Second operand has 27 states, 27 states have (on average 4.481481481481482) internal successors, (121), 27 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:51:58,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:51:58,798 INFO L93 Difference]: Finished difference Result 177380 states and 520777 transitions. [2022-03-01 15:51:58,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2022-03-01 15:51:58,798 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.481481481481482) internal successors, (121), 27 states have internal predecessors, (121), 0 states have call successors, (0), 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 77 [2022-03-01 15:51:58,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:51:59,343 INFO L225 Difference]: With dead ends: 177380 [2022-03-01 15:51:59,343 INFO L226 Difference]: Without dead ends: 177320 [2022-03-01 15:51:59,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9648 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4214, Invalid=20592, Unknown=0, NotChecked=0, Total=24806 [2022-03-01 15:51:59,344 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 766 mSDsluCounter, 2840 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 2715 SdHoareTripleChecker+Invalid, 1639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:51:59,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [766 Valid, 2715 Invalid, 1639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 15:51:59,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177320 states. [2022-03-01 15:52:02,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177320 to 120037. [2022-03-01 15:52:02,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120037 states, 120036 states have (on average 2.961344929854377) internal successors, (355468), 120036 states have internal predecessors, (355468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:52:03,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120037 states to 120037 states and 355468 transitions. [2022-03-01 15:52:03,566 INFO L78 Accepts]: Start accepts. Automaton has 120037 states and 355468 transitions. Word has length 77 [2022-03-01 15:52:03,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:52:03,567 INFO L470 AbstractCegarLoop]: Abstraction has 120037 states and 355468 transitions. [2022-03-01 15:52:03,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.481481481481482) internal successors, (121), 27 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:52:03,567 INFO L276 IsEmpty]: Start isEmpty. Operand 120037 states and 355468 transitions. [2022-03-01 15:52:03,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-01 15:52:03,806 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:52:03,806 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:52:03,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-03-01 15:52:04,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-03-01 15:52:04,007 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:52:04,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:52:04,007 INFO L85 PathProgramCache]: Analyzing trace with hash 158341105, now seen corresponding path program 59 times [2022-03-01 15:52:04,007 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:52:04,007 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808963063] [2022-03-01 15:52:04,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:52:04,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:52:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:52:04,079 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:52:04,079 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:52:04,079 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808963063] [2022-03-01 15:52:04,079 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808963063] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:52:04,079 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007526714] [2022-03-01 15:52:04,079 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:52:04,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:04,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:52:04,081 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:52:04,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-03-01 15:52:04,155 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-01 15:52:04,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:52:04,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 15:52:04,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:52:04,377 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:52:04,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:52:04,498 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-01 15:52:04,498 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007526714] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:52:04,498 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:52:04,498 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 11] total 26 [2022-03-01 15:52:04,498 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512364268] [2022-03-01 15:52:04,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:52:04,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-01 15:52:04,498 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:52:04,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-01 15:52:04,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2022-03-01 15:52:04,499 INFO L87 Difference]: Start difference. First operand 120037 states and 355468 transitions. Second operand has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 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) [2022-03-01 15:52:08,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:52:08,121 INFO L93 Difference]: Finished difference Result 168996 states and 495587 transitions. [2022-03-01 15:52:08,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-03-01 15:52:08,122 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 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 77 [2022-03-01 15:52:08,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:52:08,616 INFO L225 Difference]: With dead ends: 168996 [2022-03-01 15:52:08,616 INFO L226 Difference]: Without dead ends: 168831 [2022-03-01 15:52:08,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11501 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4065, Invalid=23657, Unknown=0, NotChecked=0, Total=27722 [2022-03-01 15:52:08,617 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 1219 mSDsluCounter, 2979 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1219 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 1669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:52:08,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1219 Valid, 2818 Invalid, 1669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 15:52:08,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168831 states. [2022-03-01 15:52:11,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168831 to 78493. [2022-03-01 15:52:11,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78493 states, 78492 states have (on average 2.9483514243489783) internal successors, (231422), 78492 states have internal predecessors, (231422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:52:11,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78493 states to 78493 states and 231422 transitions. [2022-03-01 15:52:11,748 INFO L78 Accepts]: Start accepts. Automaton has 78493 states and 231422 transitions. Word has length 77 [2022-03-01 15:52:11,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:52:11,748 INFO L470 AbstractCegarLoop]: Abstraction has 78493 states and 231422 transitions. [2022-03-01 15:52:11,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 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) [2022-03-01 15:52:11,749 INFO L276 IsEmpty]: Start isEmpty. Operand 78493 states and 231422 transitions. [2022-03-01 15:52:11,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-01 15:52:11,885 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:52:11,885 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:52:11,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-03-01 15:52:12,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2022-03-01 15:52:12,086 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:52:12,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:52:12,087 INFO L85 PathProgramCache]: Analyzing trace with hash 375939123, now seen corresponding path program 60 times [2022-03-01 15:52:12,087 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:52:12,088 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292485951] [2022-03-01 15:52:12,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:52:12,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:52:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:52:12,175 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:52:12,176 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:52:12,176 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292485951] [2022-03-01 15:52:12,176 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292485951] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:52:12,176 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917957335] [2022-03-01 15:52:12,176 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:52:12,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:12,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:52:12,177 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:52:12,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-03-01 15:52:12,252 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-01 15:52:12,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:52:12,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 15:52:12,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:52:12,472 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:52:12,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:52:12,596 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:52:12,596 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917957335] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:52:12,596 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:52:12,596 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 26 [2022-03-01 15:52:12,596 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146737221] [2022-03-01 15:52:12,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:52:12,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-01 15:52:12,597 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:52:12,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-01 15:52:12,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2022-03-01 15:52:12,597 INFO L87 Difference]: Start difference. First operand 78493 states and 231422 transitions. Second operand has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 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) [2022-03-01 15:52:16,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:52:16,060 INFO L93 Difference]: Finished difference Result 158506 states and 463091 transitions. [2022-03-01 15:52:16,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2022-03-01 15:52:16,061 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 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 77 [2022-03-01 15:52:16,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:52:16,685 INFO L225 Difference]: With dead ends: 158506 [2022-03-01 15:52:16,685 INFO L226 Difference]: Without dead ends: 158371 [2022-03-01 15:52:16,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10521 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3784, Invalid=21976, Unknown=0, NotChecked=0, Total=25760 [2022-03-01 15:52:16,687 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 1192 mSDsluCounter, 2963 mSDsCounter, 0 mSdLazyCounter, 1508 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 2802 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 15:52:16,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1192 Valid, 2802 Invalid, 1725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1508 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 15:52:16,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158371 states. [2022-03-01 15:52:19,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158371 to 96705. [2022-03-01 15:52:19,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96705 states, 96704 states have (on average 2.9457830079417606) internal successors, (284869), 96704 states have internal predecessors, (284869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:52:19,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96705 states to 96705 states and 284869 transitions. [2022-03-01 15:52:19,839 INFO L78 Accepts]: Start accepts. Automaton has 96705 states and 284869 transitions. Word has length 77 [2022-03-01 15:52:19,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:52:19,839 INFO L470 AbstractCegarLoop]: Abstraction has 96705 states and 284869 transitions. [2022-03-01 15:52:19,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 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) [2022-03-01 15:52:19,839 INFO L276 IsEmpty]: Start isEmpty. Operand 96705 states and 284869 transitions. [2022-03-01 15:52:20,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-01 15:52:20,005 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:52:20,005 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:52:20,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-03-01 15:52:20,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:20,205 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:52:20,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:52:20,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1606859835, now seen corresponding path program 61 times [2022-03-01 15:52:20,206 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:52:20,206 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29680424] [2022-03-01 15:52:20,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:52:20,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:52:20,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:52:20,286 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:52:20,286 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:52:20,286 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29680424] [2022-03-01 15:52:20,286 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29680424] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:52:20,286 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649076289] [2022-03-01 15:52:20,286 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 15:52:20,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:20,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:52:20,301 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:52:20,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-03-01 15:52:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:52:20,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 15:52:20,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:52:20,579 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:52:20,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:52:20,687 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-01 15:52:20,687 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649076289] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:52:20,687 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:52:20,687 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 11] total 26 [2022-03-01 15:52:20,687 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261772082] [2022-03-01 15:52:20,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:52:20,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-01 15:52:20,994 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:52:20,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-01 15:52:20,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2022-03-01 15:52:20,994 INFO L87 Difference]: Start difference. First operand 96705 states and 284869 transitions. Second operand has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 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) [2022-03-01 15:52:23,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:52:23,629 INFO L93 Difference]: Finished difference Result 145587 states and 426382 transitions. [2022-03-01 15:52:23,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-03-01 15:52:23,629 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 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 77 [2022-03-01 15:52:23,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:52:24,096 INFO L225 Difference]: With dead ends: 145587 [2022-03-01 15:52:24,097 INFO L226 Difference]: Without dead ends: 145407 [2022-03-01 15:52:24,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8562 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3400, Invalid=17192, Unknown=0, NotChecked=0, Total=20592 [2022-03-01 15:52:24,098 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 1314 mSDsluCounter, 2471 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 2405 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:52:24,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1314 Valid, 2405 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 15:52:24,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145407 states. [2022-03-01 15:52:27,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145407 to 116905. [2022-03-01 15:52:27,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116905 states, 116904 states have (on average 2.9534917539177443) internal successors, (345275), 116904 states have internal predecessors, (345275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:52:28,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116905 states to 116905 states and 345275 transitions. [2022-03-01 15:52:28,168 INFO L78 Accepts]: Start accepts. Automaton has 116905 states and 345275 transitions. Word has length 77 [2022-03-01 15:52:28,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:52:28,169 INFO L470 AbstractCegarLoop]: Abstraction has 116905 states and 345275 transitions. [2022-03-01 15:52:28,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 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) [2022-03-01 15:52:28,169 INFO L276 IsEmpty]: Start isEmpty. Operand 116905 states and 345275 transitions. [2022-03-01 15:52:28,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-01 15:52:28,398 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:52:28,398 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:52:28,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-03-01 15:52:28,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:28,606 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:52:28,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:52:28,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1736190075, now seen corresponding path program 62 times [2022-03-01 15:52:28,606 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:52:28,606 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488697683] [2022-03-01 15:52:28,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:52:28,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:52:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:52:28,673 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:52:28,673 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:52:28,673 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488697683] [2022-03-01 15:52:28,673 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488697683] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:52:28,673 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720475645] [2022-03-01 15:52:28,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:52:28,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:28,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:52:28,674 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:52:28,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-03-01 15:52:28,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:52:28,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:52:28,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 15:52:28,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:52:28,965 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:52:28,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:52:29,075 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-01 15:52:29,075 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720475645] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:52:29,075 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:52:29,075 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 11] total 26 [2022-03-01 15:52:29,076 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645360406] [2022-03-01 15:52:29,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:52:29,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-01 15:52:29,076 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:52:29,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-01 15:52:29,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2022-03-01 15:52:29,076 INFO L87 Difference]: Start difference. First operand 116905 states and 345275 transitions. Second operand has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 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) [2022-03-01 15:52:32,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:52:32,433 INFO L93 Difference]: Finished difference Result 214479 states and 628934 transitions. [2022-03-01 15:52:32,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-03-01 15:52:32,433 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 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 77 [2022-03-01 15:52:32,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:52:33,408 INFO L225 Difference]: With dead ends: 214479 [2022-03-01 15:52:33,408 INFO L226 Difference]: Without dead ends: 214374 [2022-03-01 15:52:33,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9705 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3948, Invalid=19308, Unknown=0, NotChecked=0, Total=23256 [2022-03-01 15:52:33,409 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 1702 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1702 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:52:33,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1702 Valid, 1633 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:52:33,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214374 states. [2022-03-01 15:52:37,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214374 to 144181. [2022-03-01 15:52:37,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144181 states, 144180 states have (on average 2.9559439589402134) internal successors, (426188), 144180 states have internal predecessors, (426188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:52:38,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144181 states to 144181 states and 426188 transitions. [2022-03-01 15:52:38,756 INFO L78 Accepts]: Start accepts. Automaton has 144181 states and 426188 transitions. Word has length 77 [2022-03-01 15:52:38,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:52:38,757 INFO L470 AbstractCegarLoop]: Abstraction has 144181 states and 426188 transitions. [2022-03-01 15:52:38,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 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) [2022-03-01 15:52:38,757 INFO L276 IsEmpty]: Start isEmpty. Operand 144181 states and 426188 transitions. [2022-03-01 15:52:39,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-01 15:52:39,035 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:52:39,035 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:52:39,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-03-01 15:52:39,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:39,251 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:52:39,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:52:39,252 INFO L85 PathProgramCache]: Analyzing trace with hash -2092997871, now seen corresponding path program 63 times [2022-03-01 15:52:39,252 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:52:39,252 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989630178] [2022-03-01 15:52:39,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:52:39,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:52:39,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:52:39,365 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:52:39,365 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:52:39,365 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989630178] [2022-03-01 15:52:39,365 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989630178] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:52:39,365 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659743789] [2022-03-01 15:52:39,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:52:39,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:52:39,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:52:39,379 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:52:39,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-03-01 15:52:39,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-01 15:52:39,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:52:39,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 15:52:39,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:52:39,988 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:52:39,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:52:40,102 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-01 15:52:40,103 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659743789] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:52:40,103 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:52:40,103 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 11] total 26 [2022-03-01 15:52:40,104 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159004926] [2022-03-01 15:52:40,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:52:40,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-01 15:52:40,105 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:52:40,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-01 15:52:40,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2022-03-01 15:52:40,105 INFO L87 Difference]: Start difference. First operand 144181 states and 426188 transitions. Second operand has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 26 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:52:42,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:52:42,933 INFO L93 Difference]: Finished difference Result 196221 states and 575779 transitions. [2022-03-01 15:52:42,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-03-01 15:52:42,934 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 26 states have internal predecessors, (116), 0 states have call successors, (0), 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 77 [2022-03-01 15:52:42,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:52:43,745 INFO L225 Difference]: With dead ends: 196221 [2022-03-01 15:52:43,745 INFO L226 Difference]: Without dead ends: 196125 [2022-03-01 15:52:43,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5555 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2224, Invalid=12296, Unknown=0, NotChecked=0, Total=14520 [2022-03-01 15:52:43,746 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 1255 mSDsluCounter, 1592 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 15:52:43,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1255 Valid, 1538 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 15:52:43,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196125 states.