/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-bad-threaded-sum-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-03 17:17:48,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-03 17:17:48,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-03 17:17:48,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-03 17:17:48,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-03 17:17:48,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-03 17:17:48,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-03 17:17:48,677 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-03-03 17:17:48,691 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-03 17:17:48,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-03 17:17:48,692 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-03 17:17:48,692 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-03 17:17:48,692 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-03 17:17:48,692 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-03 17:17:48,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-03 17:17:48,693 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-03 17:17:48,693 INFO L138 SettingsManager]: * Use SBE=true [2022-03-03 17:17:48,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-03 17:17:48,693 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-03 17:17:48,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-03 17:17:48,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-03 17:17:48,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-03 17:17:48,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-03 17:17:48,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-03 17:17:48,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-03 17:17:48,694 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-03 17:17:48,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-03 17:17:48,694 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-03 17:17:48,694 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-03 17:17:48,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-03 17:17:48,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-03 17:17:48,694 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-03 17:17:48,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-03 17:17:48,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 17:17:48,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-03 17:17:48,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-03 17:17:48,695 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-03 17:17:48,695 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-03 17:17:48,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-03 17:17:48,695 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-03 17:17:48,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-03 17:17:48,695 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-03 17:17:48,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-03 17:17:48,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-03 17:17:48,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-03 17:17:48,890 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-03 17:17:48,892 INFO L275 PluginConnector]: CDTParser initialized [2022-03-03 17:17:48,893 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c [2022-03-03 17:17:48,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddd50fbde/55ebc3b378164811ad18a611e776b351/FLAGdad339b46 [2022-03-03 17:17:49,275 INFO L306 CDTParser]: Found 1 translation units. [2022-03-03 17:17:49,275 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c [2022-03-03 17:17:49,280 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddd50fbde/55ebc3b378164811ad18a611e776b351/FLAGdad339b46 [2022-03-03 17:17:49,710 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddd50fbde/55ebc3b378164811ad18a611e776b351 [2022-03-03 17:17:49,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-03 17:17:49,712 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-03 17:17:49,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-03 17:17:49,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-03 17:17:49,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-03 17:17:49,722 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 05:17:49" (1/1) ... [2022-03-03 17:17:49,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c2ada7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:17:49, skipping insertion in model container [2022-03-03 17:17:49,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 05:17:49" (1/1) ... [2022-03-03 17:17:49,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-03 17:17:49,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-03 17:17:49,875 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-bad-threaded-sum-2.wvr.c[2476,2489] [2022-03-03 17:17:49,877 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-03 17:17:49,881 INFO L203 MainTranslator]: Completed pre-run [2022-03-03 17:17:49,894 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-bad-threaded-sum-2.wvr.c[2476,2489] [2022-03-03 17:17:49,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-03 17:17:49,903 INFO L208 MainTranslator]: Completed translation [2022-03-03 17:17:49,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:17:49 WrapperNode [2022-03-03 17:17:49,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-03 17:17:49,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-03 17:17:49,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-03 17:17:49,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-03 17:17:49,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:17:49" (1/1) ... [2022-03-03 17:17:49,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:17:49" (1/1) ... [2022-03-03 17:17:49,933 INFO L137 Inliner]: procedures = 21, calls = 34, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2022-03-03 17:17:49,934 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-03 17:17:49,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-03 17:17:49,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-03 17:17:49,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-03 17:17:49,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:17:49" (1/1) ... [2022-03-03 17:17:49,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:17:49" (1/1) ... [2022-03-03 17:17:49,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:17:49" (1/1) ... [2022-03-03 17:17:49,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:17:49" (1/1) ... [2022-03-03 17:17:49,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:17:49" (1/1) ... [2022-03-03 17:17:49,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:17:49" (1/1) ... [2022-03-03 17:17:49,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:17:49" (1/1) ... [2022-03-03 17:17:49,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-03 17:17:49,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-03 17:17:49,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-03 17:17:49,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-03 17:17:49,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:17:49" (1/1) ... [2022-03-03 17:17:49,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 17:17:49,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:17:49,987 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-03 17:17:50,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-03 17:17:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-03 17:17:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-03 17:17:50,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-03 17:17:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-03 17:17:50,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-03 17:17:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-03 17:17:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-03 17:17:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-03 17:17:50,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-03 17:17:50,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-03 17:17:50,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-03 17:17:50,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-03 17:17:50,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-03 17:17:50,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-03 17:17:50,021 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-03 17:17:50,081 INFO L234 CfgBuilder]: Building ICFG [2022-03-03 17:17:50,083 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-03 17:17:50,232 INFO L275 CfgBuilder]: Performing block encoding [2022-03-03 17:17:50,261 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-03 17:17:50,261 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-03 17:17:50,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 05:17:50 BoogieIcfgContainer [2022-03-03 17:17:50,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-03 17:17:50,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-03 17:17:50,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-03 17:17:50,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-03 17:17:50,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 05:17:49" (1/3) ... [2022-03-03 17:17:50,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc81296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 05:17:50, skipping insertion in model container [2022-03-03 17:17:50,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:17:49" (2/3) ... [2022-03-03 17:17:50,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc81296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 05:17:50, skipping insertion in model container [2022-03-03 17:17:50,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 05:17:50" (3/3) ... [2022-03-03 17:17:50,268 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-threaded-sum-2.wvr.c [2022-03-03 17:17:50,271 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-03 17:17:50,271 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-03 17:17:50,272 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-03 17:17:50,272 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-03 17:17:50,296 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,297 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,298 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,298 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,298 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,298 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,298 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,299 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,299 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,299 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,299 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,299 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,299 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,299 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,300 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,300 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,300 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,300 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,301 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,301 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,301 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,302 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,302 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,302 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,302 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,303 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,303 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,303 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,303 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,303 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,303 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,304 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,304 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,304 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,304 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,304 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,307 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,307 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,307 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,307 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,307 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,308 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,308 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,308 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,308 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,308 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:17:50,311 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-03 17:17:50,348 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-03 17:17:50,352 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-03 17:17:50,352 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-03 17:17:50,359 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 89 places, 88 transitions, 192 flow [2022-03-03 17:17:50,420 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 336 states, 335 states have (on average 2.582089552238806) internal successors, (865), 335 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:17:50,423 INFO L276 IsEmpty]: Start isEmpty. Operand has 336 states, 335 states have (on average 2.582089552238806) internal successors, (865), 335 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:17:50,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-03-03 17:17:50,433 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:17:50,434 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:17:50,434 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:17:50,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:17:50,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1436780155, now seen corresponding path program 1 times [2022-03-03 17:17:50,445 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:17:50,445 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592200725] [2022-03-03 17:17:50,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:17:50,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:17:50,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:17:50,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:17:50,584 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:17:50,584 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592200725] [2022-03-03 17:17:50,584 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592200725] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:17:50,584 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:17:50,585 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-03 17:17:50,586 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389254218] [2022-03-03 17:17:50,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:17:50,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-03 17:17:50,589 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:17:50,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-03 17:17:50,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-03 17:17:50,609 INFO L87 Difference]: Start difference. First operand has 336 states, 335 states have (on average 2.582089552238806) internal successors, (865), 335 states have internal predecessors, (865), 0 states have call successors, (0), 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 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:17:50,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:17:50,645 INFO L93 Difference]: Finished difference Result 336 states and 794 transitions. [2022-03-03 17:17:50,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-03 17:17:50,649 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-03-03 17:17:50,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:17:50,657 INFO L225 Difference]: With dead ends: 336 [2022-03-03 17:17:50,657 INFO L226 Difference]: Without dead ends: 334 [2022-03-03 17:17:50,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-03 17:17:50,661 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:17:50,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:17:50,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-03-03 17:17:50,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2022-03-03 17:17:50,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 333 states have (on average 2.3783783783783785) internal successors, (792), 333 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:17:50,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 792 transitions. [2022-03-03 17:17:50,707 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 792 transitions. Word has length 64 [2022-03-03 17:17:50,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:17:50,707 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 792 transitions. [2022-03-03 17:17:50,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:17:50,708 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 792 transitions. [2022-03-03 17:17:50,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-03-03 17:17:50,710 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:17:50,710 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:17:50,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-03 17:17:50,713 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:17:50,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:17:50,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1759613989, now seen corresponding path program 1 times [2022-03-03 17:17:50,714 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:17:50,714 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145802529] [2022-03-03 17:17:50,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:17:50,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:17:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:17:50,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:17:50,953 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:17:50,953 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145802529] [2022-03-03 17:17:50,953 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145802529] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:17:50,953 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:17:50,954 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-03 17:17:50,954 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934585508] [2022-03-03 17:17:50,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:17:50,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 17:17:50,956 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:17:50,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 17:17:50,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:17:50,959 INFO L87 Difference]: Start difference. First operand 334 states and 792 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:17:51,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:17:51,072 INFO L93 Difference]: Finished difference Result 481 states and 1212 transitions. [2022-03-03 17:17:51,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 17:17:51,073 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-03-03 17:17:51,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:17:51,076 INFO L225 Difference]: With dead ends: 481 [2022-03-03 17:17:51,076 INFO L226 Difference]: Without dead ends: 433 [2022-03-03 17:17:51,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:17:51,077 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 78 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:17:51,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 223 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:17:51,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-03-03 17:17:51,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 377. [2022-03-03 17:17:51,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 2.4627659574468086) internal successors, (926), 376 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:17:51,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 926 transitions. [2022-03-03 17:17:51,096 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 926 transitions. Word has length 64 [2022-03-03 17:17:51,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:17:51,097 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 926 transitions. [2022-03-03 17:17:51,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:17:51,097 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 926 transitions. [2022-03-03 17:17:51,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-03 17:17:51,106 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:17:51,106 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:17:51,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-03 17:17:51,107 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:17:51,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:17:51,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1477238862, now seen corresponding path program 1 times [2022-03-03 17:17:51,107 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:17:51,108 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132495260] [2022-03-03 17:17:51,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:17:51,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:17:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:17:51,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:17:51,761 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:17:51,761 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132495260] [2022-03-03 17:17:51,763 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132495260] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:17:51,764 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365826945] [2022-03-03 17:17:51,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:17:51,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:17:51,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:17:51,796 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:17:51,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-03 17:17:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:17:51,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:17:51,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:17:52,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:17:52,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:17:53,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:17:53,839 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365826945] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 17:17:53,839 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 17:17:53,839 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [13, 15] total 31 [2022-03-03 17:17:53,841 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760238895] [2022-03-03 17:17:53,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:17:53,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 17:17:53,841 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:17:53,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 17:17:53,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=718, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:17:53,843 INFO L87 Difference]: Start difference. First operand 377 states and 926 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:17:55,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:17:55,081 INFO L93 Difference]: Finished difference Result 1227 states and 3160 transitions. [2022-03-03 17:17:55,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-03 17:17:55,081 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-03-03 17:17:55,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:17:55,086 INFO L225 Difference]: With dead ends: 1227 [2022-03-03 17:17:55,087 INFO L226 Difference]: Without dead ends: 1116 [2022-03-03 17:17:55,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 118 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=431, Invalid=1825, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 17:17:55,088 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 408 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:17:55,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 1085 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 399 Invalid, 0 Unknown, 78 Unchecked, 0.4s Time] [2022-03-03 17:17:55,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2022-03-03 17:17:55,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 445. [2022-03-03 17:17:55,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 2.515765765765766) internal successors, (1117), 444 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:17:55,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1117 transitions. [2022-03-03 17:17:55,119 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1117 transitions. Word has length 68 [2022-03-03 17:17:55,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:17:55,119 INFO L470 AbstractCegarLoop]: Abstraction has 445 states and 1117 transitions. [2022-03-03 17:17:55,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:17:55,120 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1117 transitions. [2022-03-03 17:17:55,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-03 17:17:55,121 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:17:55,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:17:55,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-03 17:17:55,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:17:55,340 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:17:55,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:17:55,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1846595665, now seen corresponding path program 1 times [2022-03-03 17:17:55,340 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:17:55,341 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045401452] [2022-03-03 17:17:55,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:17:55,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:17:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:17:55,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:17:55,907 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:17:55,907 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045401452] [2022-03-03 17:17:55,907 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045401452] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:17:55,907 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620930638] [2022-03-03 17:17:55,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:17:55,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:17:55,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:17:55,909 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:17:55,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-03 17:17:56,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:17:56,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 17:17:56,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:17:56,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:17:56,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:17:58,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:17:58,647 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620930638] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:17:58,647 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:17:58,647 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 17] total 35 [2022-03-03 17:17:58,647 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851030097] [2022-03-03 17:17:58,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:17:58,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-03 17:17:58,648 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:17:58,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-03 17:17:58,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=936, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 17:17:58,649 INFO L87 Difference]: Start difference. First operand 445 states and 1117 transitions. Second operand has 35 states, 35 states have (on average 4.428571428571429) internal successors, (155), 35 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:18:06,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:18:06,931 INFO L93 Difference]: Finished difference Result 3417 states and 8680 transitions. [2022-03-03 17:18:06,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-03-03 17:18:06,931 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.428571428571429) internal successors, (155), 35 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-03-03 17:18:06,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:18:06,939 INFO L225 Difference]: With dead ends: 3417 [2022-03-03 17:18:06,939 INFO L226 Difference]: Without dead ends: 2352 [2022-03-03 17:18:06,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 3330 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1790, Invalid=8110, Unknown=0, NotChecked=0, Total=9900 [2022-03-03 17:18:06,942 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 1615 mSDsluCounter, 2314 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1615 SdHoareTripleChecker+Valid, 2267 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:18:06,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1615 Valid, 2267 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1141 Invalid, 0 Unknown, 93 Unchecked, 2.2s Time] [2022-03-03 17:18:06,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2022-03-03 17:18:06,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 867. [2022-03-03 17:18:06,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 866 states have (on average 2.6547344110854505) internal successors, (2299), 866 states have internal predecessors, (2299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:18:06,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 2299 transitions. [2022-03-03 17:18:06,968 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 2299 transitions. Word has length 71 [2022-03-03 17:18:06,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:18:06,969 INFO L470 AbstractCegarLoop]: Abstraction has 867 states and 2299 transitions. [2022-03-03 17:18:06,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.428571428571429) internal successors, (155), 35 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:18:06,969 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 2299 transitions. [2022-03-03 17:18:06,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-03 17:18:06,971 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:18:06,971 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:18:06,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-03 17:18:07,177 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,SelfDestructingSolverStorable3 [2022-03-03 17:18:07,177 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:18:07,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:18:07,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1244300115, now seen corresponding path program 2 times [2022-03-03 17:18:07,178 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:18:07,178 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674282208] [2022-03-03 17:18:07,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:18:07,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:18:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:18:07,302 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:18:07,303 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:18:07,303 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674282208] [2022-03-03 17:18:07,303 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674282208] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:18:07,303 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:18:07,303 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-03 17:18:07,303 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145268844] [2022-03-03 17:18:07,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:18:07,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 17:18:07,304 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:18:07,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 17:18:07,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:18:07,305 INFO L87 Difference]: Start difference. First operand 867 states and 2299 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:18:07,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:18:07,438 INFO L93 Difference]: Finished difference Result 1714 states and 4518 transitions. [2022-03-03 17:18:07,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-03 17:18:07,440 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 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 [2022-03-03 17:18:07,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:18:07,446 INFO L225 Difference]: With dead ends: 1714 [2022-03-03 17:18:07,446 INFO L226 Difference]: Without dead ends: 1714 [2022-03-03 17:18:07,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-03-03 17:18:07,447 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 137 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:18:07,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 329 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:18:07,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2022-03-03 17:18:07,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 894. [2022-03-03 17:18:07,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 893 states have (on average 2.677491601343785) internal successors, (2391), 893 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:18:07,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 2391 transitions. [2022-03-03 17:18:07,469 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 2391 transitions. Word has length 72 [2022-03-03 17:18:07,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:18:07,470 INFO L470 AbstractCegarLoop]: Abstraction has 894 states and 2391 transitions. [2022-03-03 17:18:07,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:18:07,470 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 2391 transitions. [2022-03-03 17:18:07,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-03 17:18:07,472 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:18:07,472 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:18:07,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-03 17:18:07,472 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:18:07,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:18:07,472 INFO L85 PathProgramCache]: Analyzing trace with hash 914260433, now seen corresponding path program 3 times [2022-03-03 17:18:07,472 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:18:07,473 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366186226] [2022-03-03 17:18:07,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:18:07,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:18:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:18:07,547 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:18:07,547 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:18:07,547 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366186226] [2022-03-03 17:18:07,547 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366186226] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:18:07,548 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:18:07,548 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 17:18:07,548 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320050680] [2022-03-03 17:18:07,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:18:07,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 17:18:07,548 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:18:07,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 17:18:07,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:18:07,549 INFO L87 Difference]: Start difference. First operand 894 states and 2391 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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) [2022-03-03 17:18:07,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:18:07,648 INFO L93 Difference]: Finished difference Result 1322 states and 3564 transitions. [2022-03-03 17:18:07,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 17:18:07,649 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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 [2022-03-03 17:18:07,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:18:07,653 INFO L225 Difference]: With dead ends: 1322 [2022-03-03 17:18:07,653 INFO L226 Difference]: Without dead ends: 1322 [2022-03-03 17:18:07,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:18:07,656 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 56 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:18:07,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 276 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:18:07,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2022-03-03 17:18:07,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 798. [2022-03-03 17:18:07,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 797 states have (on average 2.64366373902133) internal successors, (2107), 797 states have internal predecessors, (2107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:18:07,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 2107 transitions. [2022-03-03 17:18:07,674 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 2107 transitions. Word has length 72 [2022-03-03 17:18:07,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:18:07,675 INFO L470 AbstractCegarLoop]: Abstraction has 798 states and 2107 transitions. [2022-03-03 17:18:07,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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) [2022-03-03 17:18:07,675 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 2107 transitions. [2022-03-03 17:18:07,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:18:07,676 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:18:07,677 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:18:07,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-03 17:18:07,681 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:18:07,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:18:07,681 INFO L85 PathProgramCache]: Analyzing trace with hash 955660810, now seen corresponding path program 2 times [2022-03-03 17:18:07,681 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:18:07,681 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956080074] [2022-03-03 17:18:07,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:18:07,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:18:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:18:08,584 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:18:08,585 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:18:08,585 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956080074] [2022-03-03 17:18:08,585 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956080074] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:18:08,585 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869813382] [2022-03-03 17:18:08,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:18:08,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:18:08,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:18:08,586 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:18:08,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-03 17:18:08,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:18:08,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:18:08,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 34 conjunts are in the unsatisfiable core [2022-03-03 17:18:08,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:18:09,818 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:18:09,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:18:12,803 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:18:12,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869813382] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:18:12,803 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:18:12,803 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20, 20] total 44 [2022-03-03 17:18:12,804 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643454618] [2022-03-03 17:18:12,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:18:12,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-03-03 17:18:12,804 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:18:12,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-03-03 17:18:12,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=1591, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 17:18:12,805 INFO L87 Difference]: Start difference. First operand 798 states and 2107 transitions. Second operand has 44 states, 44 states have (on average 4.0) internal successors, (176), 44 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:19:04,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:19:04,188 INFO L93 Difference]: Finished difference Result 4529 states and 11574 transitions. [2022-03-03 17:19:04,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-03-03 17:19:04,189 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 4.0) internal successors, (176), 44 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:19:04,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:19:04,210 INFO L225 Difference]: With dead ends: 4529 [2022-03-03 17:19:04,210 INFO L226 Difference]: Without dead ends: 4064 [2022-03-03 17:19:04,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8583 ImplicationChecksByTransitivity, 42.9s TimeCoverageRelationStatistics Valid=3920, Invalid=20572, Unknown=0, NotChecked=0, Total=24492 [2022-03-03 17:19:04,214 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 2089 mSDsluCounter, 4708 mSDsCounter, 0 mSdLazyCounter, 2616 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2089 SdHoareTripleChecker+Valid, 4514 SdHoareTripleChecker+Invalid, 2847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 2616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:19:04,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2089 Valid, 4514 Invalid, 2847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 2616 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2022-03-03 17:19:04,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4064 states. [2022-03-03 17:19:04,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4064 to 1146. [2022-03-03 17:19:04,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1145 states have (on average 2.7606986899563317) internal successors, (3161), 1145 states have internal predecessors, (3161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:19:04,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 3161 transitions. [2022-03-03 17:19:04,252 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 3161 transitions. Word has length 74 [2022-03-03 17:19:04,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:19:04,252 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 3161 transitions. [2022-03-03 17:19:04,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 4.0) internal successors, (176), 44 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:19:04,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 3161 transitions. [2022-03-03 17:19:04,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:19:04,254 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:19:04,254 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:19:04,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-03 17:19:04,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:19:04,459 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:19:04,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:19:04,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1329799292, now seen corresponding path program 3 times [2022-03-03 17:19:04,459 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:19:04,459 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911757201] [2022-03-03 17:19:04,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:19:04,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:19:04,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:19:05,043 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:05,044 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:19:05,044 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911757201] [2022-03-03 17:19:05,044 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911757201] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:19:05,044 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14962225] [2022-03-03 17:19:05,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:19:05,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:19:05,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:19:05,045 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:19:05,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-03 17:19:05,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:19:05,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:19:05,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 28 conjunts are in the unsatisfiable core [2022-03-03 17:19:05,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:19:05,925 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:05,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:19:08,078 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:08,079 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14962225] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:19:08,079 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:19:08,079 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 17] total 35 [2022-03-03 17:19:08,091 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415063617] [2022-03-03 17:19:08,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:19:08,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-03 17:19:08,092 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:19:08,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-03 17:19:08,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=986, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 17:19:08,093 INFO L87 Difference]: Start difference. First operand 1146 states and 3161 transitions. Second operand has 35 states, 35 states have (on average 4.685714285714286) internal successors, (164), 35 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:19:19,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:19:19,389 INFO L93 Difference]: Finished difference Result 3667 states and 9608 transitions. [2022-03-03 17:19:19,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-03 17:19:19,390 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.685714285714286) internal successors, (164), 35 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:19:19,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:19:19,401 INFO L225 Difference]: With dead ends: 3667 [2022-03-03 17:19:19,401 INFO L226 Difference]: Without dead ends: 3037 [2022-03-03 17:19:19,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2526 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=1330, Invalid=7042, Unknown=0, NotChecked=0, Total=8372 [2022-03-03 17:19:19,403 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 1366 mSDsluCounter, 2790 mSDsCounter, 0 mSdLazyCounter, 1357 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 1528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:19:19,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1366 Valid, 2721 Invalid, 1528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1357 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-03-03 17:19:19,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3037 states. [2022-03-03 17:19:19,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3037 to 1086. [2022-03-03 17:19:19,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 1085 states have (on average 2.713364055299539) internal successors, (2944), 1085 states have internal predecessors, (2944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:19:19,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 2944 transitions. [2022-03-03 17:19:19,443 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 2944 transitions. Word has length 74 [2022-03-03 17:19:19,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:19:19,443 INFO L470 AbstractCegarLoop]: Abstraction has 1086 states and 2944 transitions. [2022-03-03 17:19:19,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.685714285714286) internal successors, (164), 35 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:19:19,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 2944 transitions. [2022-03-03 17:19:19,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 17:19:19,446 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:19:19,446 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:19:19,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-03 17:19:19,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:19:19,659 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:19:19,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:19:19,660 INFO L85 PathProgramCache]: Analyzing trace with hash -2090126194, now seen corresponding path program 4 times [2022-03-03 17:19:19,660 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:19:19,660 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870891256] [2022-03-03 17:19:19,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:19:19,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:19:19,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:19:20,953 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:20,954 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:19:20,954 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870891256] [2022-03-03 17:19:20,954 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870891256] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:19:20,954 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969704073] [2022-03-03 17:19:20,954 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:19:20,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:19:20,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:19:20,955 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:19:20,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-03 17:19:21,084 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:19:21,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:19:21,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 28 conjunts are in the unsatisfiable core [2022-03-03 17:19:21,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:19:22,264 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:22,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:19:25,672 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:25,672 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969704073] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:19:25,672 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:19:25,672 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 18] total 36 [2022-03-03 17:19:25,672 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486636994] [2022-03-03 17:19:25,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:19:25,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-03 17:19:25,673 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:19:25,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-03 17:19:25,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1050, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 17:19:25,674 INFO L87 Difference]: Start difference. First operand 1086 states and 2944 transitions. Second operand has 36 states, 36 states have (on average 4.555555555555555) internal successors, (164), 36 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:19:42,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:19:42,994 INFO L93 Difference]: Finished difference Result 3390 states and 9035 transitions. [2022-03-03 17:19:42,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-03 17:19:42,994 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.555555555555555) internal successors, (164), 36 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 17:19:42,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:19:43,004 INFO L225 Difference]: With dead ends: 3390 [2022-03-03 17:19:43,004 INFO L226 Difference]: Without dead ends: 2775 [2022-03-03 17:19:43,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 123 SyntacticMatches, 5 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2586 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=1260, Invalid=6930, Unknown=0, NotChecked=0, Total=8190 [2022-03-03 17:19:43,006 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 1174 mSDsluCounter, 2202 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 2172 SdHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:19:43,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1174 Valid, 2172 Invalid, 1349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1216 Invalid, 0 Unknown, 1 Unchecked, 5.3s Time] [2022-03-03 17:19:43,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2775 states. [2022-03-03 17:19:43,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2775 to 1226. [2022-03-03 17:19:43,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1225 states have (on average 2.746938775510204) internal successors, (3365), 1225 states have internal predecessors, (3365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:19:43,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 3365 transitions. [2022-03-03 17:19:43,035 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 3365 transitions. Word has length 74 [2022-03-03 17:19:43,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:19:43,036 INFO L470 AbstractCegarLoop]: Abstraction has 1226 states and 3365 transitions. [2022-03-03 17:19:43,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.555555555555555) internal successors, (164), 36 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:19:43,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 3365 transitions. [2022-03-03 17:19:43,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-03 17:19:43,038 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:19:43,038 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:19:43,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-03 17:19:43,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:19:43,243 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:19:43,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:19:43,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1335703416, now seen corresponding path program 4 times [2022-03-03 17:19:43,243 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:19:43,243 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459012697] [2022-03-03 17:19:43,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:19:43,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:19:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:19:43,549 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:43,549 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:19:43,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459012697] [2022-03-03 17:19:43,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459012697] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:19:43,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120019804] [2022-03-03 17:19:43,549 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:19:43,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:19:43,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:19:43,550 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:19:43,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-03 17:19:43,639 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:19:43,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:19:43,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 34 conjunts are in the unsatisfiable core [2022-03-03 17:19:43,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:19:44,424 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:44,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:19:45,521 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:45,521 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120019804] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:19:45,521 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:19:45,521 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 18] total 41 [2022-03-03 17:19:45,521 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177470846] [2022-03-03 17:19:45,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:19:45,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 17:19:45,522 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:19:45,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 17:19:45,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1327, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:19:45,523 INFO L87 Difference]: Start difference. First operand 1226 states and 3365 transitions. Second operand has 41 states, 41 states have (on average 4.439024390243903) internal successors, (182), 41 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:19:53,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:19:53,366 INFO L93 Difference]: Finished difference Result 4144 states and 11312 transitions. [2022-03-03 17:19:53,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-03-03 17:19:53,367 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.439024390243903) internal successors, (182), 41 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-03-03 17:19:53,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:19:53,375 INFO L225 Difference]: With dead ends: 4144 [2022-03-03 17:19:53,375 INFO L226 Difference]: Without dead ends: 3655 [2022-03-03 17:19:53,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4797 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=2787, Invalid=11975, Unknown=0, NotChecked=0, Total=14762 [2022-03-03 17:19:53,378 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 1293 mSDsluCounter, 3368 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 3335 SdHoareTripleChecker+Invalid, 2014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 123 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:19:53,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1293 Valid, 3335 Invalid, 2014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1716 Invalid, 0 Unknown, 123 Unchecked, 2.4s Time] [2022-03-03 17:19:53,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3655 states. [2022-03-03 17:19:53,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3655 to 1370. [2022-03-03 17:19:53,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 2.77063550036523) internal successors, (3793), 1369 states have internal predecessors, (3793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:19:53,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 3793 transitions. [2022-03-03 17:19:53,410 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 3793 transitions. Word has length 76 [2022-03-03 17:19:53,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:19:53,410 INFO L470 AbstractCegarLoop]: Abstraction has 1370 states and 3793 transitions. [2022-03-03 17:19:53,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.439024390243903) internal successors, (182), 41 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:19:53,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 3793 transitions. [2022-03-03 17:19:53,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:19:53,413 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:19:53,413 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:19:53,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-03 17:19:53,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:19:53,632 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:19:53,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:19:53,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1260039537, now seen corresponding path program 5 times [2022-03-03 17:19:53,633 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:19:53,633 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722872189] [2022-03-03 17:19:53,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:19:53,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:19:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:19:54,747 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:54,747 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:19:54,747 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722872189] [2022-03-03 17:19:54,747 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722872189] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:19:54,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171841579] [2022-03-03 17:19:54,748 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:19:54,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:19:54,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:19:54,749 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:19:54,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-03 17:19:54,867 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 17:19:54,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:19:54,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 32 conjunts are in the unsatisfiable core [2022-03-03 17:19:54,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:19:56,519 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:56,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:20:03,397 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:03,397 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171841579] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:20:03,397 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:20:03,397 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 19] total 41 [2022-03-03 17:20:03,398 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054975348] [2022-03-03 17:20:03,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:20:03,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 17:20:03,398 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:03,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 17:20:03,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=1354, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:20:03,399 INFO L87 Difference]: Start difference. First operand 1370 states and 3793 transitions. Second operand has 41 states, 41 states have (on average 4.219512195121951) internal successors, (173), 41 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:37,483 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:21:14,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:14,214 INFO L93 Difference]: Finished difference Result 4813 states and 12652 transitions. [2022-03-03 17:21:14,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-03-03 17:21:14,215 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.219512195121951) internal successors, (173), 41 states have internal predecessors, (173), 0 states have call successors, (0), 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 [2022-03-03 17:21:14,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:14,222 INFO L225 Difference]: With dead ends: 4813 [2022-03-03 17:21:14,223 INFO L226 Difference]: Without dead ends: 3748 [2022-03-03 17:21:14,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 127 SyntacticMatches, 4 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6305 ImplicationChecksByTransitivity, 61.3s TimeCoverageRelationStatistics Valid=2645, Invalid=15984, Unknown=3, NotChecked=0, Total=18632 [2022-03-03 17:21:14,224 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 1662 mSDsluCounter, 4141 mSDsCounter, 0 mSdLazyCounter, 2040 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1662 SdHoareTripleChecker+Valid, 3999 SdHoareTripleChecker+Invalid, 2225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 2040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:14,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1662 Valid, 3999 Invalid, 2225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 2040 Invalid, 0 Unknown, 0 Unchecked, 15.6s Time] [2022-03-03 17:21:14,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3748 states. [2022-03-03 17:21:14,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3748 to 1702. [2022-03-03 17:21:14,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 1701 states have (on average 2.802469135802469) internal successors, (4767), 1701 states have internal predecessors, (4767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:14,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 4767 transitions. [2022-03-03 17:21:14,260 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 4767 transitions. Word has length 77 [2022-03-03 17:21:14,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:14,260 INFO L470 AbstractCegarLoop]: Abstraction has 1702 states and 4767 transitions. [2022-03-03 17:21:14,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.219512195121951) internal successors, (173), 41 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:14,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 4767 transitions. [2022-03-03 17:21:14,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:21:14,263 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:14,263 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:21:14,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:14,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:14,480 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:14,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:14,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1044628751, now seen corresponding path program 6 times [2022-03-03 17:21:14,481 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:14,481 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006973058] [2022-03-03 17:21:14,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:14,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:17,918 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:17,919 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:17,919 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006973058] [2022-03-03 17:21:17,919 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006973058] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:17,919 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429152208] [2022-03-03 17:21:17,919 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:21:17,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:17,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:17,920 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:21:17,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-03 17:21:18,059 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 17:21:18,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:18,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 32 conjunts are in the unsatisfiable core [2022-03-03 17:21:18,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:19,704 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:19,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:25,370 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:21:25,370 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429152208] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:25,370 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:25,370 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20, 19] total 44 [2022-03-03 17:21:25,370 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153311899] [2022-03-03 17:21:25,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:25,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-03-03 17:21:25,371 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:25,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-03-03 17:21:25,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=1583, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 17:21:25,372 INFO L87 Difference]: Start difference. First operand 1702 states and 4767 transitions. Second operand has 44 states, 44 states have (on average 3.9318181818181817) internal successors, (173), 44 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:21:37,720 WARN L228 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 150 DAG size of output: 134 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-03 17:21:43,108 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:22:19,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:22:19,669 INFO L93 Difference]: Finished difference Result 5207 states and 13781 transitions. [2022-03-03 17:22:19,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-03-03 17:22:19,669 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.9318181818181817) internal successors, (173), 44 states have internal predecessors, (173), 0 states have call successors, (0), 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 [2022-03-03 17:22:19,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:22:19,677 INFO L225 Difference]: With dead ends: 5207 [2022-03-03 17:22:19,677 INFO L226 Difference]: Without dead ends: 4031 [2022-03-03 17:22:19,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 125 SyntacticMatches, 4 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8320 ImplicationChecksByTransitivity, 48.1s TimeCoverageRelationStatistics Valid=3339, Invalid=21466, Unknown=1, NotChecked=0, Total=24806 [2022-03-03 17:22:19,679 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 1912 mSDsluCounter, 5183 mSDsCounter, 0 mSdLazyCounter, 2565 mSolverCounterSat, 226 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1912 SdHoareTripleChecker+Valid, 5024 SdHoareTripleChecker+Invalid, 2792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 2565 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:22:19,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1912 Valid, 5024 Invalid, 2792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 2565 Invalid, 1 Unknown, 0 Unchecked, 12.5s Time] [2022-03-03 17:22:19,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4031 states. [2022-03-03 17:22:19,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4031 to 2062. [2022-03-03 17:22:19,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2062 states, 2061 states have (on average 2.8107714701601165) internal successors, (5793), 2061 states have internal predecessors, (5793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:22:19,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 5793 transitions. [2022-03-03 17:22:19,721 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 5793 transitions. Word has length 77 [2022-03-03 17:22:19,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:22:19,721 INFO L470 AbstractCegarLoop]: Abstraction has 2062 states and 5793 transitions. [2022-03-03 17:22:19,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.9318181818181817) internal successors, (173), 44 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:22:19,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 5793 transitions. [2022-03-03 17:22:19,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:22:19,724 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:22:19,724 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:22:19,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-03 17:22:19,955 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,SelfDestructingSolverStorable11 [2022-03-03 17:22:19,956 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:22:19,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:22:19,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1503926061, now seen corresponding path program 7 times [2022-03-03 17:22:19,956 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:22:19,956 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391131258] [2022-03-03 17:22:19,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:22:19,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:22:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:22:20,513 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:22:20,513 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:22:20,513 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391131258] [2022-03-03 17:22:20,513 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391131258] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:22:20,513 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481904469] [2022-03-03 17:22:20,513 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:22:20,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:22:20,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:22:20,514 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:22:20,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-03 17:22:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:22:20,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 35 conjunts are in the unsatisfiable core [2022-03-03 17:22:20,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:22:23,053 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:22:23,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:22:26,983 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:22:26,984 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481904469] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:22:26,984 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:22:26,984 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 23, 21] total 52 [2022-03-03 17:22:26,984 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382287481] [2022-03-03 17:22:26,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:22:26,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-03-03 17:22:26,984 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:22:26,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-03-03 17:22:26,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=416, Invalid=2236, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 17:22:26,985 INFO L87 Difference]: Start difference. First operand 2062 states and 5793 transitions. Second operand has 52 states, 52 states have (on average 3.5576923076923075) internal successors, (185), 52 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:24:09,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:24:09,972 INFO L93 Difference]: Finished difference Result 7274 states and 19572 transitions. [2022-03-03 17:24:09,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2022-03-03 17:24:09,972 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.5576923076923075) internal successors, (185), 52 states have internal predecessors, (185), 0 states have call successors, (0), 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 [2022-03-03 17:24:09,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:24:10,006 INFO L225 Difference]: With dead ends: 7274 [2022-03-03 17:24:10,007 INFO L226 Difference]: Without dead ends: 6293 [2022-03-03 17:24:10,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20026 ImplicationChecksByTransitivity, 94.1s TimeCoverageRelationStatistics Valid=7006, Invalid=45206, Unknown=0, NotChecked=0, Total=52212 [2022-03-03 17:24:10,009 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 2370 mSDsluCounter, 5237 mSDsCounter, 0 mSdLazyCounter, 3399 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2370 SdHoareTripleChecker+Valid, 5187 SdHoareTripleChecker+Invalid, 3724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 3399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:24:10,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2370 Valid, 5187 Invalid, 3724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 3399 Invalid, 0 Unknown, 0 Unchecked, 12.7s Time] [2022-03-03 17:24:10,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6293 states. [2022-03-03 17:24:10,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6293 to 2422. [2022-03-03 17:24:10,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2422 states, 2421 states have (on average 2.87938868236266) internal successors, (6971), 2421 states have internal predecessors, (6971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:24:10,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2422 states to 2422 states and 6971 transitions. [2022-03-03 17:24:10,067 INFO L78 Accepts]: Start accepts. Automaton has 2422 states and 6971 transitions. Word has length 77 [2022-03-03 17:24:10,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:24:10,067 INFO L470 AbstractCegarLoop]: Abstraction has 2422 states and 6971 transitions. [2022-03-03 17:24:10,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.5576923076923075) internal successors, (185), 52 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:24:10,067 INFO L276 IsEmpty]: Start isEmpty. Operand 2422 states and 6971 transitions. [2022-03-03 17:24:10,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:24:10,071 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:24:10,071 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:24:10,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-03-03 17:24:10,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-03 17:24:10,276 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:24:10,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:24:10,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1514002547, now seen corresponding path program 8 times [2022-03-03 17:24:10,277 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:24:10,277 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284741519] [2022-03-03 17:24:10,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:24:10,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:24:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:24:13,330 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:24:13,330 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:24:13,330 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284741519] [2022-03-03 17:24:13,330 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284741519] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:24:13,331 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114313703] [2022-03-03 17:24:13,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:24:13,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:24:13,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:24:13,332 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:24:13,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-03 17:24:13,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:24:13,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:24:13,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 17:24:13,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:24:15,549 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:24:15,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:24:18,743 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:24:18,743 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114313703] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:24:18,743 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:24:18,743 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 18] total 40 [2022-03-03 17:24:18,744 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139219882] [2022-03-03 17:24:18,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:24:18,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-03 17:24:18,744 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:24:18,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-03 17:24:18,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1349, Unknown=1, NotChecked=0, Total=1560 [2022-03-03 17:24:18,745 INFO L87 Difference]: Start difference. First operand 2422 states and 6971 transitions. Second operand has 40 states, 40 states have (on average 3.8) internal successors, (152), 40 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:25:38,919 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:26:07,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:26:07,654 INFO L93 Difference]: Finished difference Result 7511 states and 20043 transitions. [2022-03-03 17:26:07,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2022-03-03 17:26:07,654 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.8) internal successors, (152), 40 states have internal predecessors, (152), 0 states have call successors, (0), 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 [2022-03-03 17:26:07,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:26:07,664 INFO L225 Difference]: With dead ends: 7511 [2022-03-03 17:26:07,664 INFO L226 Difference]: Without dead ends: 6545 [2022-03-03 17:26:07,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15404 ImplicationChecksByTransitivity, 93.2s TimeCoverageRelationStatistics Valid=5591, Invalid=35819, Unknown=2, NotChecked=0, Total=41412 [2022-03-03 17:26:07,667 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 1997 mSDsluCounter, 4982 mSDsCounter, 0 mSdLazyCounter, 2876 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 4972 SdHoareTripleChecker+Invalid, 3175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 2876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:26:07,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1997 Valid, 4972 Invalid, 3175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 2876 Invalid, 0 Unknown, 0 Unchecked, 21.0s Time] [2022-03-03 17:26:07,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6545 states. [2022-03-03 17:26:07,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6545 to 2650. [2022-03-03 17:26:07,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2650 states, 2649 states have (on average 2.924122310305776) internal successors, (7746), 2649 states have internal predecessors, (7746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:26:07,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2650 states to 2650 states and 7746 transitions. [2022-03-03 17:26:07,742 INFO L78 Accepts]: Start accepts. Automaton has 2650 states and 7746 transitions. Word has length 77 [2022-03-03 17:26:07,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:26:07,742 INFO L470 AbstractCegarLoop]: Abstraction has 2650 states and 7746 transitions. [2022-03-03 17:26:07,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.8) internal successors, (152), 40 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:26:07,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2650 states and 7746 transitions. [2022-03-03 17:26:07,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-03 17:26:07,747 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:26:07,747 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:26:07,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-03 17:26:07,964 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,SelfDestructingSolverStorable13 [2022-03-03 17:26:07,964 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:26:07,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:26:07,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1799553041, now seen corresponding path program 9 times [2022-03-03 17:26:07,964 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:26:07,965 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498207405] [2022-03-03 17:26:07,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:26:07,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:26:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:26:08,403 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:26:08,403 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:26:08,403 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498207405] [2022-03-03 17:26:08,403 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498207405] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:26:08,403 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306256065] [2022-03-03 17:26:08,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:26:08,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:26:08,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:26:08,404 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:26:08,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-03 17:26:08,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 17:26:08,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:26:08,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 32 conjunts are in the unsatisfiable core [2022-03-03 17:26:08,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:26:09,483 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:26:09,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:26:12,194 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:26:12,195 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306256065] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:26:12,195 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:26:12,195 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 18] total 41 [2022-03-03 17:26:12,195 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584358463] [2022-03-03 17:26:12,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:26:12,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 17:26:12,195 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:26:12,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 17:26:12,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=1388, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:26:12,196 INFO L87 Difference]: Start difference. First operand 2650 states and 7746 transitions. Second operand has 41 states, 41 states have (on average 4.585365853658536) internal successors, (188), 41 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:26:56,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:26:56,449 INFO L93 Difference]: Finished difference Result 8737 states and 23720 transitions. [2022-03-03 17:26:56,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-03-03 17:26:56,449 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.585365853658536) internal successors, (188), 41 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-03 17:26:56,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:26:56,460 INFO L225 Difference]: With dead ends: 8737 [2022-03-03 17:26:56,460 INFO L226 Difference]: Without dead ends: 7375 [2022-03-03 17:26:56,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 131 SyntacticMatches, 3 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9638 ImplicationChecksByTransitivity, 38.9s TimeCoverageRelationStatistics Valid=2971, Invalid=23761, Unknown=0, NotChecked=0, Total=26732 [2022-03-03 17:26:56,462 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 2197 mSDsluCounter, 4562 mSDsCounter, 0 mSdLazyCounter, 2344 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2197 SdHoareTripleChecker+Valid, 4466 SdHoareTripleChecker+Invalid, 2627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 2344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:26:56,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2197 Valid, 4466 Invalid, 2627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 2344 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-03-03 17:26:56,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7375 states. [2022-03-03 17:26:56,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7375 to 3130. [2022-03-03 17:26:56,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3130 states, 3129 states have (on average 2.975391498881432) internal successors, (9310), 3129 states have internal predecessors, (9310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:26:56,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3130 states to 3130 states and 9310 transitions. [2022-03-03 17:26:56,528 INFO L78 Accepts]: Start accepts. Automaton has 3130 states and 9310 transitions. Word has length 78 [2022-03-03 17:26:56,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:26:56,528 INFO L470 AbstractCegarLoop]: Abstraction has 3130 states and 9310 transitions. [2022-03-03 17:26:56,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.585365853658536) internal successors, (188), 41 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:26:56,528 INFO L276 IsEmpty]: Start isEmpty. Operand 3130 states and 9310 transitions. [2022-03-03 17:26:56,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-03 17:26:56,533 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:26:56,533 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:26:56,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-03 17:26:56,747 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,SelfDestructingSolverStorable14 [2022-03-03 17:26:56,747 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:26:56,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:26:56,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1217995345, now seen corresponding path program 10 times [2022-03-03 17:26:56,748 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:26:56,748 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700877635] [2022-03-03 17:26:56,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:26:56,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:26:56,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:26:57,669 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:26:57,670 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:26:57,670 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700877635] [2022-03-03 17:26:57,670 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700877635] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:26:57,670 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022076736] [2022-03-03 17:26:57,670 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:26:57,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:26:57,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:26:57,671 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:26:57,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-03 17:26:57,830 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:26:57,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:26:57,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 32 conjunts are in the unsatisfiable core [2022-03-03 17:26:57,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:26:59,067 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:26:59,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:27:02,251 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:27:02,251 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022076736] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:27:02,251 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:27:02,251 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19, 19] total 47 [2022-03-03 17:27:02,251 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028198055] [2022-03-03 17:27:02,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:27:02,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-03 17:27:02,252 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:27:02,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-03 17:27:02,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=1838, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 17:27:02,252 INFO L87 Difference]: Start difference. First operand 3130 states and 9310 transitions. Second operand has 47 states, 47 states have (on average 3.702127659574468) internal successors, (174), 47 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:27:30,952 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:28:04,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:28:04,915 INFO L93 Difference]: Finished difference Result 8914 states and 24552 transitions. [2022-03-03 17:28:04,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-03-03 17:28:04,916 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.702127659574468) internal successors, (174), 47 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-03 17:28:04,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:28:04,927 INFO L225 Difference]: With dead ends: 8914 [2022-03-03 17:28:04,928 INFO L226 Difference]: Without dead ends: 7567 [2022-03-03 17:28:04,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9930 ImplicationChecksByTransitivity, 43.1s TimeCoverageRelationStatistics Valid=3787, Invalid=24942, Unknown=1, NotChecked=0, Total=28730 [2022-03-03 17:28:04,929 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 1943 mSDsluCounter, 4508 mSDsCounter, 0 mSdLazyCounter, 2522 mSolverCounterSat, 279 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1943 SdHoareTripleChecker+Valid, 4452 SdHoareTripleChecker+Invalid, 2802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 2522 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:28:04,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1943 Valid, 4452 Invalid, 2802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 2522 Invalid, 1 Unknown, 0 Unchecked, 22.3s Time] [2022-03-03 17:28:04,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7567 states. [2022-03-03 17:28:04,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7567 to 3546. [2022-03-03 17:28:04,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3546 states, 3545 states have (on average 2.9918194640338505) internal successors, (10606), 3545 states have internal predecessors, (10606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:28:04,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3546 states to 3546 states and 10606 transitions. [2022-03-03 17:28:04,999 INFO L78 Accepts]: Start accepts. Automaton has 3546 states and 10606 transitions. Word has length 78 [2022-03-03 17:28:05,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:28:05,000 INFO L470 AbstractCegarLoop]: Abstraction has 3546 states and 10606 transitions. [2022-03-03 17:28:05,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.702127659574468) internal successors, (174), 47 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:28:05,000 INFO L276 IsEmpty]: Start isEmpty. Operand 3546 states and 10606 transitions. [2022-03-03 17:28:05,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-03 17:28:05,006 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:28:05,006 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:28:05,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-03 17:28:05,219 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,SelfDestructingSolverStorable15 [2022-03-03 17:28:05,219 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:28:05,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:28:05,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1762627179, now seen corresponding path program 11 times [2022-03-03 17:28:05,220 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:28:05,220 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206387125] [2022-03-03 17:28:05,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:28:05,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:28:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:28:05,430 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:28:05,431 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:28:05,431 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206387125] [2022-03-03 17:28:05,431 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206387125] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:28:05,431 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281870182] [2022-03-03 17:28:05,431 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:28:05,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:28:05,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:28:05,432 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:28:05,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-03 17:28:05,490 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:28:05,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:28:05,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:28:05,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:28:05,897 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:28:05,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:28:06,340 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:28:06,340 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281870182] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:28:06,340 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:28:06,340 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 13] total 25 [2022-03-03 17:28:06,340 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3013932] [2022-03-03 17:28:06,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:28:06,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 17:28:06,341 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:28:06,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 17:28:06,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2022-03-03 17:28:06,341 INFO L87 Difference]: Start difference. First operand 3546 states and 10606 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:28:08,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:28:08,807 INFO L93 Difference]: Finished difference Result 8648 states and 24142 transitions. [2022-03-03 17:28:08,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-03-03 17:28:08,808 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-03 17:28:08,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:28:08,821 INFO L225 Difference]: With dead ends: 8648 [2022-03-03 17:28:08,821 INFO L226 Difference]: Without dead ends: 8648 [2022-03-03 17:28:08,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 135 SyntacticMatches, 8 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2175 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=968, Invalid=5838, Unknown=0, NotChecked=0, Total=6806 [2022-03-03 17:28:08,822 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 1051 mSDsluCounter, 3068 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 3106 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:28:08,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1051 Valid, 3106 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1460 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 17:28:08,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8648 states. [2022-03-03 17:28:08,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8648 to 4298. [2022-03-03 17:28:08,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4298 states, 4297 states have (on average 3.0239702117756573) internal successors, (12994), 4297 states have internal predecessors, (12994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:28:08,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4298 states to 4298 states and 12994 transitions. [2022-03-03 17:28:08,906 INFO L78 Accepts]: Start accepts. Automaton has 4298 states and 12994 transitions. Word has length 78 [2022-03-03 17:28:08,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:28:08,907 INFO L470 AbstractCegarLoop]: Abstraction has 4298 states and 12994 transitions. [2022-03-03 17:28:08,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:28:08,907 INFO L276 IsEmpty]: Start isEmpty. Operand 4298 states and 12994 transitions. [2022-03-03 17:28:08,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-03 17:28:08,914 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:28:08,914 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:28:08,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-03 17:28:09,127 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,SelfDestructingSolverStorable16 [2022-03-03 17:28:09,127 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:28:09,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:28:09,128 INFO L85 PathProgramCache]: Analyzing trace with hash 63050411, now seen corresponding path program 12 times [2022-03-03 17:28:09,128 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:28:09,128 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579631703] [2022-03-03 17:28:09,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:28:09,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:28:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:28:10,521 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:28:10,521 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:28:10,521 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579631703] [2022-03-03 17:28:10,521 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579631703] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:28:10,521 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72507288] [2022-03-03 17:28:10,522 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:28:10,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:28:10,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:28:10,523 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:28:10,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-03 17:28:10,681 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:28:10,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:28:10,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-03 17:28:10,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:28:14,845 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:28:14,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:28:28,389 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:28:28,389 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72507288] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:28:28,389 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:28:28,389 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23, 22] total 55 [2022-03-03 17:28:28,390 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795997025] [2022-03-03 17:28:28,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:28:28,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-03-03 17:28:28,390 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:28:28,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-03-03 17:28:28,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=2544, Unknown=2, NotChecked=0, Total=2970 [2022-03-03 17:28:28,391 INFO L87 Difference]: Start difference. First operand 4298 states and 12994 transitions. Second operand has 55 states, 55 states have (on average 3.418181818181818) internal successors, (188), 55 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:28:45,137 WARN L228 SmtUtils]: Spent 10.94s on a formula simplification. DAG size of input: 161 DAG size of output: 154 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-03 17:28:59,512 WARN L228 SmtUtils]: Spent 7.76s on a formula simplification. DAG size of input: 149 DAG size of output: 142 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-03 17:29:14,492 WARN L228 SmtUtils]: Spent 12.85s on a formula simplification. DAG size of input: 170 DAG size of output: 152 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-03 17:29:30,474 WARN L228 SmtUtils]: Spent 14.70s on a formula simplification. DAG size of input: 185 DAG size of output: 159 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-03 17:29:44,255 WARN L228 SmtUtils]: Spent 12.14s on a formula simplification. DAG size of input: 192 DAG size of output: 166 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-03 17:29:57,636 WARN L228 SmtUtils]: Spent 10.05s on a formula simplification. DAG size of input: 181 DAG size of output: 163 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-03 17:30:06,784 WARN L228 SmtUtils]: Spent 7.38s on a formula simplification. DAG size of input: 155 DAG size of output: 136 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-03 17:30:10,560 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:30:24,385 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:30:50,936 WARN L228 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 140 DAG size of output: 120 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-03 17:31:09,543 WARN L228 SmtUtils]: Spent 6.88s on a formula simplification. DAG size of input: 162 DAG size of output: 134 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-03 17:31:12,199 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:31:31,951 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:31:39,578 WARN L228 SmtUtils]: Spent 5.69s on a formula simplification. DAG size of input: 166 DAG size of output: 151 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-03 17:31:52,594 WARN L228 SmtUtils]: Spent 6.19s on a formula simplification. DAG size of input: 177 DAG size of output: 154 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2022-03-03 17:32:04,365 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-03 17:32:04,372 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-03 17:32:04,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-03-03 17:32:04,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 122 SyntacticMatches, 3 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4211 ImplicationChecksByTransitivity, 199.9s TimeCoverageRelationStatistics Valid=1668, Invalid=10760, Unknown=4, NotChecked=0, Total=12432 [2022-03-03 17:32:04,706 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 845 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 1591 mSolverCounterSat, 218 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 2084 SdHoareTripleChecker+Invalid, 1811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1591 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:32:04,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [845 Valid, 2084 Invalid, 1811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 1591 Invalid, 2 Unknown, 0 Unchecked, 27.3s Time] [2022-03-03 17:32:04,707 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-03 17:32:04,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-03 17:32:04,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:32:04,908 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (4298states) and FLOYD_HOARE automaton (currently 68 states, 55 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 112 known predicates. [2022-03-03 17:32:04,909 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-03 17:32:04,909 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-03 17:32:04,911 INFO L732 BasicCegarLoop]: Path program histogram: [12, 4, 1, 1] [2022-03-03 17:32:04,913 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-03 17:32:04,913 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-03 17:32:04,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 05:32:04 BasicIcfg [2022-03-03 17:32:04,914 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-03 17:32:04,914 INFO L158 Benchmark]: Toolchain (without parser) took 855202.00ms. Allocated memory was 195.0MB in the beginning and 350.2MB in the end (delta: 155.2MB). Free memory was 140.4MB in the beginning and 130.1MB in the end (delta: 10.3MB). Peak memory consumption was 166.6MB. Max. memory is 8.0GB. [2022-03-03 17:32:04,914 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 195.0MB. Free memory was 157.2MB in the beginning and 157.1MB in the end (delta: 70.5kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-03 17:32:04,915 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.58ms. Allocated memory was 195.0MB in the beginning and 242.2MB in the end (delta: 47.2MB). Free memory was 140.2MB in the beginning and 215.2MB in the end (delta: -75.1MB). Peak memory consumption was 9.9MB. Max. memory is 8.0GB. [2022-03-03 17:32:04,915 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.29ms. Allocated memory is still 242.2MB. Free memory was 215.2MB in the beginning and 213.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-03 17:32:04,915 INFO L158 Benchmark]: Boogie Preprocessor took 14.26ms. Allocated memory is still 242.2MB. Free memory was 213.7MB in the beginning and 212.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-03 17:32:04,915 INFO L158 Benchmark]: RCFGBuilder took 313.73ms. Allocated memory is still 242.2MB. Free memory was 212.6MB in the beginning and 197.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-03-03 17:32:04,915 INFO L158 Benchmark]: TraceAbstraction took 854649.95ms. Allocated memory was 242.2MB in the beginning and 350.2MB in the end (delta: 108.0MB). Free memory was 197.4MB in the beginning and 130.1MB in the end (delta: 67.3MB). Peak memory consumption was 175.6MB. Max. memory is 8.0GB. [2022-03-03 17:32:04,916 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 195.0MB. Free memory was 157.2MB in the beginning and 157.1MB in the end (delta: 70.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 184.58ms. Allocated memory was 195.0MB in the beginning and 242.2MB in the end (delta: 47.2MB). Free memory was 140.2MB in the beginning and 215.2MB in the end (delta: -75.1MB). Peak memory consumption was 9.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.29ms. Allocated memory is still 242.2MB. Free memory was 215.2MB in the beginning and 213.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 14.26ms. Allocated memory is still 242.2MB. Free memory was 213.7MB in the beginning and 212.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 313.73ms. Allocated memory is still 242.2MB. Free memory was 212.6MB in the beginning and 197.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 854649.95ms. Allocated memory was 242.2MB in the beginning and 350.2MB in the end (delta: 108.0MB). Free memory was 197.4MB in the beginning and 130.1MB in the end (delta: 67.3MB). Peak memory consumption was 175.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (4298states) and FLOYD_HOARE automaton (currently 68 states, 55 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 112 known predicates. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (4298states) and FLOYD_HOARE automaton (currently 68 states, 55 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 112 known predicates. - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (4298states) and FLOYD_HOARE automaton (currently 68 states, 55 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 112 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 100 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 854.6s, OverallIterations: 18, TraceHistogramMax: 3, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.1s, AutomataDifference: 760.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 22193 SdHoareTripleChecker+Valid, 143.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22193 mSDsluCounter, 50278 SdHoareTripleChecker+Invalid, 138.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 295 IncrementalHoareTripleChecker+Unchecked, 50775 mSDsCounter, 2840 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27549 IncrementalHoareTripleChecker+Invalid, 30688 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2840 mSolverCounterUnsat, 2714 mSDtfsCounter, 27549 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3677 GetRequests, 1765 SyntacticMatches, 53 SemanticMatches, 1858 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 98602 ImplicationChecksByTransitivity, 661.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4298occurred in iteration=17, InterpolantAutomatonStates: 1504, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 17 MinimizatonAttempts, 36656 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 87.3s InterpolantComputationTime, 2386 NumberOfCodeBlocks, 2386 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 3397 ConstructedInterpolants, 28 QuantifiedInterpolants, 92647 SizeOfPredicates, 214 NumberOfNonLiveVariables, 2362 ConjunctsInSsa, 425 ConjunctsInUnsatCore, 46 InterpolantComputations, 5 PerfectInterpolantSequences, 23/408 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown