/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/parallel-misc-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-03 17:11:06,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-03 17:11:06,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-03 17:11:06,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-03 17:11:06,993 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-03 17:11:06,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-03 17:11:06,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-03 17:11:06,995 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 17:11:07,011 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-03 17:11:07,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-03 17:11:07,012 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-03 17:11:07,012 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-03 17:11:07,012 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-03 17:11:07,012 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-03 17:11:07,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-03 17:11:07,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-03 17:11:07,013 INFO L138 SettingsManager]: * Use SBE=true [2022-03-03 17:11:07,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-03 17:11:07,013 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-03 17:11:07,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-03 17:11:07,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-03 17:11:07,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-03 17:11:07,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-03 17:11:07,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-03 17:11:07,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-03 17:11:07,014 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-03 17:11:07,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-03 17:11:07,014 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-03 17:11:07,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-03 17:11:07,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-03 17:11:07,014 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-03 17:11:07,014 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-03 17:11:07,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-03 17:11:07,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 17:11:07,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-03 17:11:07,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-03 17:11:07,015 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-03 17:11:07,015 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-03 17:11:07,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-03 17:11:07,015 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-03 17:11:07,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-03 17:11:07,015 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-03 17:11:07,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-03 17:11:07,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-03 17:11:07,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-03 17:11:07,221 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-03 17:11:07,222 INFO L275 PluginConnector]: CDTParser initialized [2022-03-03 17:11:07,223 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2022-03-03 17:11:07,263 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a8f32664/5bbc191dc53445f2838d342337fddbbd/FLAG4be2416f7 [2022-03-03 17:11:07,565 INFO L306 CDTParser]: Found 1 translation units. [2022-03-03 17:11:07,566 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2022-03-03 17:11:07,574 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a8f32664/5bbc191dc53445f2838d342337fddbbd/FLAG4be2416f7 [2022-03-03 17:11:07,987 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a8f32664/5bbc191dc53445f2838d342337fddbbd [2022-03-03 17:11:07,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-03 17:11:07,991 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-03 17:11:07,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-03 17:11:07,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-03 17:11:07,995 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-03 17:11:07,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 05:11:07" (1/1) ... [2022-03-03 17:11:07,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e9e192d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:11:07, skipping insertion in model container [2022-03-03 17:11:07,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 05:11:07" (1/1) ... [2022-03-03 17:11:08,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-03 17:11:08,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-03 17:11:08,156 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/parallel-misc-2.wvr.c[2554,2567] [2022-03-03 17:11:08,158 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-03 17:11:08,162 INFO L203 MainTranslator]: Completed pre-run [2022-03-03 17:11:08,184 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/parallel-misc-2.wvr.c[2554,2567] [2022-03-03 17:11:08,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-03 17:11:08,194 INFO L208 MainTranslator]: Completed translation [2022-03-03 17:11:08,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:11:08 WrapperNode [2022-03-03 17:11:08,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-03 17:11:08,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-03 17:11:08,197 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-03 17:11:08,197 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-03 17:11:08,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:11:08" (1/1) ... [2022-03-03 17:11:08,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:11:08" (1/1) ... [2022-03-03 17:11:08,232 INFO L137 Inliner]: procedures = 21, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2022-03-03 17:11:08,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-03 17:11:08,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-03 17:11:08,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-03 17:11:08,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-03 17:11:08,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:11:08" (1/1) ... [2022-03-03 17:11:08,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:11:08" (1/1) ... [2022-03-03 17:11:08,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:11:08" (1/1) ... [2022-03-03 17:11:08,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:11:08" (1/1) ... [2022-03-03 17:11:08,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:11:08" (1/1) ... [2022-03-03 17:11:08,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:11:08" (1/1) ... [2022-03-03 17:11:08,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:11:08" (1/1) ... [2022-03-03 17:11:08,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-03 17:11:08,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-03 17:11:08,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-03 17:11:08,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-03 17:11:08,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:11:08" (1/1) ... [2022-03-03 17:11:08,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 17:11:08,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:11:08,305 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 17:11:08,327 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 17:11:08,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-03 17:11:08,334 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-03 17:11:08,334 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-03 17:11:08,334 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-03 17:11:08,334 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-03 17:11:08,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-03 17:11:08,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-03 17:11:08,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-03 17:11:08,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-03 17:11:08,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-03 17:11:08,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-03 17:11:08,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-03 17:11:08,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-03 17:11:08,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-03 17:11:08,336 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 17:11:08,416 INFO L234 CfgBuilder]: Building ICFG [2022-03-03 17:11:08,417 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-03 17:11:08,624 INFO L275 CfgBuilder]: Performing block encoding [2022-03-03 17:11:08,638 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-03 17:11:08,638 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-03 17:11:08,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 05:11:08 BoogieIcfgContainer [2022-03-03 17:11:08,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-03 17:11:08,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-03 17:11:08,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-03 17:11:08,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-03 17:11:08,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 05:11:07" (1/3) ... [2022-03-03 17:11:08,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@582cbaf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 05:11:08, skipping insertion in model container [2022-03-03 17:11:08,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:11:08" (2/3) ... [2022-03-03 17:11:08,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@582cbaf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 05:11:08, skipping insertion in model container [2022-03-03 17:11:08,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 05:11:08" (3/3) ... [2022-03-03 17:11:08,645 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2022-03-03 17:11:08,648 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-03 17:11:08,648 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-03 17:11:08,648 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-03 17:11:08,648 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-03 17:11:08,669 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:11:08,669 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:11:08,670 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:11:08,670 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:11:08,670 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:11:08,670 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:11:08,670 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:11:08,671 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:11:08,671 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:11:08,671 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:11:08,671 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:11:08,671 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:11:08,671 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:11:08,672 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:11:08,672 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:11:08,673 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:11:08,673 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:11:08,673 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:11:08,673 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:11:08,674 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:11:08,674 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:11:08,674 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:11:08,674 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:11:08,674 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:11:08,676 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:11:08,677 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:11:08,677 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:11:08,677 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:11:08,677 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:11:08,678 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:11:08,678 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:11:08,678 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:11:08,680 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-03 17:11:08,708 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-03 17:11:08,714 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 17:11:08,714 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-03 17:11:08,727 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 103 places, 104 transitions, 224 flow [2022-03-03 17:11:08,788 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 636 states, 635 states have (on average 2.8) internal successors, (1778), 635 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states 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 17:11:08,792 INFO L276 IsEmpty]: Start isEmpty. Operand has 636 states, 635 states have (on average 2.8) internal successors, (1778), 635 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states 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 17:11:08,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:11:08,813 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:08,814 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] [2022-03-03 17:11:08,815 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:08,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:08,823 INFO L85 PathProgramCache]: Analyzing trace with hash 91702260, now seen corresponding path program 1 times [2022-03-03 17:11:08,829 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:08,830 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770238576] [2022-03-03 17:11:08,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:08,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:08,998 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 17:11:08,998 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:08,998 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770238576] [2022-03-03 17:11:08,999 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770238576] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:11:08,999 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:11:08,999 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-03 17:11:09,000 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232251975] [2022-03-03 17:11:09,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:11:09,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-03 17:11:09,003 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:09,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-03 17:11:09,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-03 17:11:09,022 INFO L87 Difference]: Start difference. First operand has 636 states, 635 states have (on average 2.8) internal successors, (1778), 635 states have internal predecessors, (1778), 0 states have call successors, (0), 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 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:09,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:09,066 INFO L93 Difference]: Finished difference Result 636 states and 1679 transitions. [2022-03-03 17:11:09,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-03 17:11:09,068 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:11:09,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:09,085 INFO L225 Difference]: With dead ends: 636 [2022-03-03 17:11:09,086 INFO L226 Difference]: Without dead ends: 634 [2022-03-03 17:11:09,088 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 17:11:09,092 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:09,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 83 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:11:09,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2022-03-03 17:11:09,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2022-03-03 17:11:09,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 633 states have (on average 2.6492890995260665) internal successors, (1677), 633 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states 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 17:11:09,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 1677 transitions. [2022-03-03 17:11:09,166 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 1677 transitions. Word has length 69 [2022-03-03 17:11:09,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:09,167 INFO L470 AbstractCegarLoop]: Abstraction has 634 states and 1677 transitions. [2022-03-03 17:11:09,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:09,167 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 1677 transitions. [2022-03-03 17:11:09,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-03 17:11:09,171 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:09,172 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] [2022-03-03 17:11:09,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-03 17:11:09,172 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:09,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:09,175 INFO L85 PathProgramCache]: Analyzing trace with hash -638556778, now seen corresponding path program 1 times [2022-03-03 17:11:09,176 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:09,179 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475526617] [2022-03-03 17:11:09,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:09,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:09,448 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 17:11:09,448 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:09,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475526617] [2022-03-03 17:11:09,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475526617] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:11:09,449 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:11:09,449 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 17:11:09,449 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601551333] [2022-03-03 17:11:09,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:11:09,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 17:11:09,450 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:09,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 17:11:09,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-03-03 17:11:09,451 INFO L87 Difference]: Start difference. First operand 634 states and 1677 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:09,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:09,565 INFO L93 Difference]: Finished difference Result 899 states and 2413 transitions. [2022-03-03 17:11:09,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 17:11:09,566 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-03 17:11:09,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:09,570 INFO L225 Difference]: With dead ends: 899 [2022-03-03 17:11:09,570 INFO L226 Difference]: Without dead ends: 848 [2022-03-03 17:11:09,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-03-03 17:11:09,571 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 76 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:09,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 324 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:11:09,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2022-03-03 17:11:09,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 689. [2022-03-03 17:11:09,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 688 states have (on average 2.627906976744186) internal successors, (1808), 688 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states 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 17:11:09,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1808 transitions. [2022-03-03 17:11:09,590 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1808 transitions. Word has length 69 [2022-03-03 17:11:09,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:09,591 INFO L470 AbstractCegarLoop]: Abstraction has 689 states and 1808 transitions. [2022-03-03 17:11:09,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:09,591 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1808 transitions. [2022-03-03 17:11:09,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-03 17:11:09,607 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:09,607 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, 1, 1, 1, 1, 1] [2022-03-03 17:11:09,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-03 17:11:09,608 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:09,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:09,608 INFO L85 PathProgramCache]: Analyzing trace with hash -849231512, now seen corresponding path program 1 times [2022-03-03 17:11:09,609 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:09,609 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454093858] [2022-03-03 17:11:09,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:09,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:09,759 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 17:11:09,759 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:09,759 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454093858] [2022-03-03 17:11:09,760 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454093858] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:11:09,760 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:11:09,760 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-03 17:11:09,760 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473118246] [2022-03-03 17:11:09,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:11:09,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 17:11:09,761 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:09,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 17:11:09,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:11:09,761 INFO L87 Difference]: Start difference. First operand 689 states and 1808 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 17:11:09,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:09,945 INFO L93 Difference]: Finished difference Result 1079 states and 2914 transitions. [2022-03-03 17:11:09,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 17:11:09,945 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 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 17:11:09,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:09,950 INFO L225 Difference]: With dead ends: 1079 [2022-03-03 17:11:09,950 INFO L226 Difference]: Without dead ends: 1046 [2022-03-03 17:11:09,950 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 17:11:09,951 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 168 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:09,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 276 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:11:09,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2022-03-03 17:11:09,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 656. [2022-03-03 17:11:09,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 655 states have (on average 2.645801526717557) internal successors, (1733), 655 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states 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 17:11:09,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 1733 transitions. [2022-03-03 17:11:09,992 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 1733 transitions. Word has length 76 [2022-03-03 17:11:09,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:09,993 INFO L470 AbstractCegarLoop]: Abstraction has 656 states and 1733 transitions. [2022-03-03 17:11:09,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 17:11:10,011 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 1733 transitions. [2022-03-03 17:11:10,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-03 17:11:10,013 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:10,014 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, 1, 1, 1, 1, 1] [2022-03-03 17:11:10,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-03 17:11:10,014 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:10,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:10,015 INFO L85 PathProgramCache]: Analyzing trace with hash -871538449, now seen corresponding path program 1 times [2022-03-03 17:11:10,015 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:10,015 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119205123] [2022-03-03 17:11:10,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:10,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:10,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:10,205 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 17:11:10,205 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:10,206 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119205123] [2022-03-03 17:11:10,206 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119205123] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:11:10,206 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518820450] [2022-03-03 17:11:10,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:10,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:11:10,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:11:10,209 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 17:11:10,215 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 17:11:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:10,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 17:11:10,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:11:10,682 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 17:11:10,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:11:12,807 WARN L838 $PredicateComparison]: unable to prove that (forall ((~N~0 Int)) (let ((.cse0 (* 2 ~N~0))) (or (not (< (mod c_~i1~0 4294967296) (mod .cse0 4294967296))) (<= (+ c_~i2~0 (* 4294967296 (div .cse0 4294967296)) 1) (+ .cse0 (* (div c_~i2~0 4294967296) 4294967296)))))) is different from false [2022-03-03 17:11:13,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-03-03 17:11:13,100 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518820450] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:11:13,100 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:11:13,100 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-03-03 17:11:13,101 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875319140] [2022-03-03 17:11:13,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:11:13,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-03 17:11:13,101 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:13,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-03 17:11:13,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=91, Unknown=1, NotChecked=20, Total=156 [2022-03-03 17:11:13,102 INFO L87 Difference]: Start difference. First operand 656 states and 1733 transitions. Second operand has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:13,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:13,320 INFO L93 Difference]: Finished difference Result 1525 states and 4125 transitions. [2022-03-03 17:11:13,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 17:11:13,321 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-03-03 17:11:13,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:13,327 INFO L225 Difference]: With dead ends: 1525 [2022-03-03 17:11:13,328 INFO L226 Difference]: Without dead ends: 1525 [2022-03-03 17:11:13,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 144 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=87, Invalid=156, Unknown=1, NotChecked=28, Total=272 [2022-03-03 17:11:13,329 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 420 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:13,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [420 Valid, 516 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 131 Invalid, 0 Unknown, 141 Unchecked, 0.1s Time] [2022-03-03 17:11:13,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1525 states. [2022-03-03 17:11:13,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1525 to 727. [2022-03-03 17:11:13,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 726 states have (on average 2.6639118457300275) internal successors, (1934), 726 states have internal predecessors, (1934), 0 states have call successors, (0), 0 states 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 17:11:13,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1934 transitions. [2022-03-03 17:11:13,350 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1934 transitions. Word has length 76 [2022-03-03 17:11:13,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:13,350 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 1934 transitions. [2022-03-03 17:11:13,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:13,351 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1934 transitions. [2022-03-03 17:11:13,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-03 17:11:13,352 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:13,352 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, 1, 1, 1, 1, 1] [2022-03-03 17:11:13,369 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 17:11:13,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:11:13,568 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:13,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:13,568 INFO L85 PathProgramCache]: Analyzing trace with hash -83304769, now seen corresponding path program 2 times [2022-03-03 17:11:13,568 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:13,569 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973064437] [2022-03-03 17:11:13,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:13,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:13,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:13,655 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 17:11:13,656 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:13,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973064437] [2022-03-03 17:11:13,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973064437] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:11:13,656 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:11:13,656 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-03 17:11:13,656 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901290339] [2022-03-03 17:11:13,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:11:13,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 17:11:13,656 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:13,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 17:11:13,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:11:13,657 INFO L87 Difference]: Start difference. First operand 727 states and 1934 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 17:11:13,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:13,757 INFO L93 Difference]: Finished difference Result 1021 states and 2739 transitions. [2022-03-03 17:11:13,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 17:11:13,757 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 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 17:11:13,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:13,761 INFO L225 Difference]: With dead ends: 1021 [2022-03-03 17:11:13,761 INFO L226 Difference]: Without dead ends: 1009 [2022-03-03 17:11:13,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:11:13,762 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 183 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:13,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 265 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:11:13,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2022-03-03 17:11:13,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 715. [2022-03-03 17:11:13,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 714 states have (on average 2.6624649859943976) internal successors, (1901), 714 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states 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 17:11:13,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1901 transitions. [2022-03-03 17:11:13,783 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1901 transitions. Word has length 76 [2022-03-03 17:11:13,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:13,785 INFO L470 AbstractCegarLoop]: Abstraction has 715 states and 1901 transitions. [2022-03-03 17:11:13,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 17:11:13,785 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1901 transitions. [2022-03-03 17:11:13,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-03 17:11:13,788 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:13,789 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, 1, 1, 1, 1, 1] [2022-03-03 17:11:13,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-03 17:11:13,789 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:13,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:13,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1188116900, now seen corresponding path program 2 times [2022-03-03 17:11:13,790 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:13,790 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121913390] [2022-03-03 17:11:13,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:13,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:13,910 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 17:11:13,911 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:13,911 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121913390] [2022-03-03 17:11:13,911 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121913390] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:11:13,911 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:11:13,911 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-03 17:11:13,911 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867292817] [2022-03-03 17:11:13,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:11:13,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 17:11:13,912 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:13,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 17:11:13,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:11:13,912 INFO L87 Difference]: Start difference. First operand 715 states and 1901 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 17:11:13,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:13,998 INFO L93 Difference]: Finished difference Result 1035 states and 2804 transitions. [2022-03-03 17:11:13,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 17:11:13,999 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 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 17:11:13,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:14,003 INFO L225 Difference]: With dead ends: 1035 [2022-03-03 17:11:14,003 INFO L226 Difference]: Without dead ends: 1035 [2022-03-03 17:11:14,003 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 17:11:14,006 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 118 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:14,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 294 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:11:14,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2022-03-03 17:11:14,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 735. [2022-03-03 17:11:14,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 734 states have (on average 2.664850136239782) internal successors, (1956), 734 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states 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 17:11:14,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1956 transitions. [2022-03-03 17:11:14,026 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1956 transitions. Word has length 76 [2022-03-03 17:11:14,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:14,027 INFO L470 AbstractCegarLoop]: Abstraction has 735 states and 1956 transitions. [2022-03-03 17:11:14,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 17:11:14,027 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1956 transitions. [2022-03-03 17:11:14,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-03-03 17:11:14,029 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:14,029 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:11:14,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-03 17:11:14,029 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:14,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:14,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1745682415, now seen corresponding path program 1 times [2022-03-03 17:11:14,029 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:14,029 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517739450] [2022-03-03 17:11:14,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:14,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:14,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:14,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:11:14,198 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:14,198 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517739450] [2022-03-03 17:11:14,198 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517739450] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:11:14,198 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940198767] [2022-03-03 17:11:14,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:14,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:11:14,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:11:14,200 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 17:11:14,201 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 17:11:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:14,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 17:11:14,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:11:14,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:11:14,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:11:14,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:11:14,993 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940198767] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:11:14,994 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:11:14,994 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-03-03 17:11:14,994 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128375431] [2022-03-03 17:11:14,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:11:14,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:11:14,995 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:14,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:11:14,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:11:14,995 INFO L87 Difference]: Start difference. First operand 735 states and 1956 transitions. Second operand has 20 states, 20 states have (on average 7.1) internal successors, (142), 20 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 17:11:16,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:16,721 INFO L93 Difference]: Finished difference Result 2989 states and 8606 transitions. [2022-03-03 17:11:16,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-03 17:11:16,721 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.1) internal successors, (142), 20 states have internal predecessors, (142), 0 states have call successors, (0), 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 83 [2022-03-03 17:11:16,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:16,734 INFO L225 Difference]: With dead ends: 2989 [2022-03-03 17:11:16,735 INFO L226 Difference]: Without dead ends: 2989 [2022-03-03 17:11:16,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=546, Invalid=2210, Unknown=0, NotChecked=0, Total=2756 [2022-03-03 17:11:16,737 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 1756 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1756 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:16,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1756 Valid, 1072 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:11:16,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2022-03-03 17:11:16,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 1831. [2022-03-03 17:11:16,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1831 states, 1830 states have (on average 2.8136612021857923) internal successors, (5149), 1830 states have internal predecessors, (5149), 0 states have call successors, (0), 0 states 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 17:11:16,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 5149 transitions. [2022-03-03 17:11:16,796 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 5149 transitions. Word has length 83 [2022-03-03 17:11:16,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:16,796 INFO L470 AbstractCegarLoop]: Abstraction has 1831 states and 5149 transitions. [2022-03-03 17:11:16,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.1) internal successors, (142), 20 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 17:11:16,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 5149 transitions. [2022-03-03 17:11:16,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-03 17:11:16,804 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:16,804 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:11:16,836 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 17:11:17,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-03-03 17:11:17,019 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:17,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:17,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1200855136, now seen corresponding path program 2 times [2022-03-03 17:11:17,019 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:17,019 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114489839] [2022-03-03 17:11:17,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:17,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:17,080 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:11:17,081 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:17,081 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114489839] [2022-03-03 17:11:17,081 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114489839] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:11:17,081 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:11:17,081 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-03 17:11:17,083 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283242252] [2022-03-03 17:11:17,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:11:17,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 17:11:17,084 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:17,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 17:11:17,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-03 17:11:17,085 INFO L87 Difference]: Start difference. First operand 1831 states and 5149 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:17,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:17,116 INFO L93 Difference]: Finished difference Result 3104 states and 8558 transitions. [2022-03-03 17:11:17,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-03 17:11:17,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-03-03 17:11:17,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:17,127 INFO L225 Difference]: With dead ends: 3104 [2022-03-03 17:11:17,127 INFO L226 Difference]: Without dead ends: 3104 [2022-03-03 17:11:17,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-03 17:11:17,128 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 92 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:17,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 317 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:11:17,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3104 states. [2022-03-03 17:11:17,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3104 to 2777. [2022-03-03 17:11:17,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2777 states, 2776 states have (on average 2.805835734870317) internal successors, (7789), 2776 states have internal predecessors, (7789), 0 states have call successors, (0), 0 states 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 17:11:17,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2777 states to 2777 states and 7789 transitions. [2022-03-03 17:11:17,205 INFO L78 Accepts]: Start accepts. Automaton has 2777 states and 7789 transitions. Word has length 97 [2022-03-03 17:11:17,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:17,206 INFO L470 AbstractCegarLoop]: Abstraction has 2777 states and 7789 transitions. [2022-03-03 17:11:17,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:17,206 INFO L276 IsEmpty]: Start isEmpty. Operand 2777 states and 7789 transitions. [2022-03-03 17:11:17,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-03 17:11:17,211 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:17,211 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:11:17,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-03 17:11:17,211 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:17,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:17,212 INFO L85 PathProgramCache]: Analyzing trace with hash -272535424, now seen corresponding path program 1 times [2022-03-03 17:11:17,212 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:17,212 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902935952] [2022-03-03 17:11:17,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:17,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:17,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:17,277 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-03 17:11:17,277 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:17,277 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902935952] [2022-03-03 17:11:17,277 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902935952] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:11:17,278 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:11:17,278 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-03 17:11:17,278 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774852786] [2022-03-03 17:11:17,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:11:17,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 17:11:17,278 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:17,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 17:11:17,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-03 17:11:17,279 INFO L87 Difference]: Start difference. First operand 2777 states and 7789 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:17,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:17,315 INFO L93 Difference]: Finished difference Result 4564 states and 12641 transitions. [2022-03-03 17:11:17,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-03 17:11:17,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-03-03 17:11:17,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:17,347 INFO L225 Difference]: With dead ends: 4564 [2022-03-03 17:11:17,348 INFO L226 Difference]: Without dead ends: 4564 [2022-03-03 17:11:17,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-03 17:11:17,349 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 77 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:17,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 292 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:11:17,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4564 states. [2022-03-03 17:11:17,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4564 to 4174. [2022-03-03 17:11:17,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4174 states, 4173 states have (on average 2.8023005032350827) internal successors, (11694), 4173 states have internal predecessors, (11694), 0 states have call successors, (0), 0 states 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 17:11:17,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4174 states to 4174 states and 11694 transitions. [2022-03-03 17:11:17,436 INFO L78 Accepts]: Start accepts. Automaton has 4174 states and 11694 transitions. Word has length 97 [2022-03-03 17:11:17,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:17,436 INFO L470 AbstractCegarLoop]: Abstraction has 4174 states and 11694 transitions. [2022-03-03 17:11:17,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:17,436 INFO L276 IsEmpty]: Start isEmpty. Operand 4174 states and 11694 transitions. [2022-03-03 17:11:17,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-03 17:11:17,445 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:17,445 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:11:17,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-03 17:11:17,445 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:17,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:17,451 INFO L85 PathProgramCache]: Analyzing trace with hash 83701920, now seen corresponding path program 1 times [2022-03-03 17:11:17,451 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:17,451 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966410506] [2022-03-03 17:11:17,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:17,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:17,632 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:17,633 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:17,633 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966410506] [2022-03-03 17:11:17,633 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966410506] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:11:17,633 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436531424] [2022-03-03 17:11:17,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:17,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:11:17,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:11:17,634 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 17:11:17,635 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 17:11:17,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:17,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-03 17:11:17,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:11:17,939 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:17,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:11:18,092 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:18,093 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436531424] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:11:18,093 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:11:18,093 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-03-03 17:11:18,093 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423917497] [2022-03-03 17:11:18,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:11:18,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 17:11:18,094 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:18,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 17:11:18,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-03 17:11:18,094 INFO L87 Difference]: Start difference. First operand 4174 states and 11694 transitions. Second operand has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:18,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:18,269 INFO L93 Difference]: Finished difference Result 8287 states and 23042 transitions. [2022-03-03 17:11:18,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 17:11:18,270 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-03-03 17:11:18,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:18,289 INFO L225 Difference]: With dead ends: 8287 [2022-03-03 17:11:18,289 INFO L226 Difference]: Without dead ends: 8236 [2022-03-03 17:11:18,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 192 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-03-03 17:11:18,290 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 245 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:18,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 797 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:11:18,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8236 states. [2022-03-03 17:11:18,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8236 to 7238. [2022-03-03 17:11:18,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7238 states, 7237 states have (on average 2.8301782506563495) internal successors, (20482), 7237 states have internal predecessors, (20482), 0 states have call successors, (0), 0 states 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 17:11:18,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7238 states to 7238 states and 20482 transitions. [2022-03-03 17:11:18,473 INFO L78 Accepts]: Start accepts. Automaton has 7238 states and 20482 transitions. Word has length 97 [2022-03-03 17:11:18,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:18,473 INFO L470 AbstractCegarLoop]: Abstraction has 7238 states and 20482 transitions. [2022-03-03 17:11:18,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:18,474 INFO L276 IsEmpty]: Start isEmpty. Operand 7238 states and 20482 transitions. [2022-03-03 17:11:18,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-03 17:11:18,488 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:18,488 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:11:18,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-03 17:11:18,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:11:18,702 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:18,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:18,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1555304934, now seen corresponding path program 2 times [2022-03-03 17:11:18,703 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:18,703 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980961345] [2022-03-03 17:11:18,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:18,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:18,869 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:11:18,869 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:18,869 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980961345] [2022-03-03 17:11:18,869 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980961345] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:11:18,870 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617881959] [2022-03-03 17:11:18,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:11:18,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:11:18,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:11:18,871 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 17:11:18,872 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 17:11:18,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:11:18,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:11:18,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-03 17:11:18,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:11:19,129 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:19,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:11:19,298 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:19,298 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617881959] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:11:19,298 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:11:19,298 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 14 [2022-03-03 17:11:19,298 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710876627] [2022-03-03 17:11:19,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:11:19,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 17:11:19,299 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:19,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 17:11:19,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-03-03 17:11:19,300 INFO L87 Difference]: Start difference. First operand 7238 states and 20482 transitions. Second operand has 14 states, 14 states have (on average 8.285714285714286) internal successors, (116), 14 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:19,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:19,706 INFO L93 Difference]: Finished difference Result 9212 states and 25754 transitions. [2022-03-03 17:11:19,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 17:11:19,707 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.285714285714286) internal successors, (116), 14 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-03-03 17:11:19,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:19,727 INFO L225 Difference]: With dead ends: 9212 [2022-03-03 17:11:19,727 INFO L226 Difference]: Without dead ends: 9161 [2022-03-03 17:11:19,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 189 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:11:19,728 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 253 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:19,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 1181 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:11:19,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9161 states. [2022-03-03 17:11:19,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9161 to 8462. [2022-03-03 17:11:19,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8462 states, 8461 states have (on average 2.8311074341094433) internal successors, (23954), 8461 states have internal predecessors, (23954), 0 states have call successors, (0), 0 states 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 17:11:19,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8462 states to 8462 states and 23954 transitions. [2022-03-03 17:11:19,893 INFO L78 Accepts]: Start accepts. Automaton has 8462 states and 23954 transitions. Word has length 97 [2022-03-03 17:11:19,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:19,893 INFO L470 AbstractCegarLoop]: Abstraction has 8462 states and 23954 transitions. [2022-03-03 17:11:19,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.285714285714286) internal successors, (116), 14 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:19,893 INFO L276 IsEmpty]: Start isEmpty. Operand 8462 states and 23954 transitions. [2022-03-03 17:11:19,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-03 17:11:19,914 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:19,914 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:11:19,931 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 17:11:20,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:11:20,127 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:20,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:20,128 INFO L85 PathProgramCache]: Analyzing trace with hash 723241996, now seen corresponding path program 3 times [2022-03-03 17:11:20,128 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:20,128 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315847778] [2022-03-03 17:11:20,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:20,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:20,283 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:11:20,283 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:20,283 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315847778] [2022-03-03 17:11:20,284 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315847778] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:11:20,284 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403456479] [2022-03-03 17:11:20,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:11:20,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:11:20,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:11:20,285 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 17:11:20,286 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 17:11:20,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 17:11:20,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:11:20,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-03 17:11:20,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:11:20,587 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:11:20,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:11:20,725 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:11:20,725 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403456479] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:11:20,725 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:11:20,726 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-03-03 17:11:20,726 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110298740] [2022-03-03 17:11:20,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:11:20,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-03 17:11:20,726 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:20,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-03 17:11:20,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-03-03 17:11:20,727 INFO L87 Difference]: Start difference. First operand 8462 states and 23954 transitions. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:20,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:20,992 INFO L93 Difference]: Finished difference Result 11939 states and 33104 transitions. [2022-03-03 17:11:20,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 17:11:20,992 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-03-03 17:11:20,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:21,021 INFO L225 Difference]: With dead ends: 11939 [2022-03-03 17:11:21,021 INFO L226 Difference]: Without dead ends: 11888 [2022-03-03 17:11:21,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-03-03 17:11:21,021 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 240 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:21,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 1350 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:11:21,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11888 states. [2022-03-03 17:11:21,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11888 to 8938. [2022-03-03 17:11:21,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8938 states, 8937 states have (on average 2.8375293722725745) internal successors, (25359), 8937 states have internal predecessors, (25359), 0 states have call successors, (0), 0 states 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 17:11:21,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8938 states to 8938 states and 25359 transitions. [2022-03-03 17:11:21,249 INFO L78 Accepts]: Start accepts. Automaton has 8938 states and 25359 transitions. Word has length 97 [2022-03-03 17:11:21,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:21,249 INFO L470 AbstractCegarLoop]: Abstraction has 8938 states and 25359 transitions. [2022-03-03 17:11:21,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:21,249 INFO L276 IsEmpty]: Start isEmpty. Operand 8938 states and 25359 transitions. [2022-03-03 17:11:21,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-03 17:11:21,266 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:21,266 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:11:21,293 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 17:11:21,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-03-03 17:11:21,479 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:21,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:21,480 INFO L85 PathProgramCache]: Analyzing trace with hash 32170892, now seen corresponding path program 4 times [2022-03-03 17:11:21,480 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:21,480 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480680937] [2022-03-03 17:11:21,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:21,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:21,621 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:11:21,621 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:21,621 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480680937] [2022-03-03 17:11:21,621 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480680937] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:11:21,621 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118174711] [2022-03-03 17:11:21,621 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:11:21,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:11:21,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:11:21,623 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 17:11:21,655 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 17:11:21,687 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:11:21,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:11:21,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-03 17:11:21,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:11:21,961 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:11:21,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:11:22,148 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:11:22,148 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118174711] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:11:22,148 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:11:22,148 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-03-03 17:11:22,148 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57270716] [2022-03-03 17:11:22,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:11:22,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-03 17:11:22,149 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:22,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-03 17:11:22,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-03-03 17:11:22,150 INFO L87 Difference]: Start difference. First operand 8938 states and 25359 transitions. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:22,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:22,416 INFO L93 Difference]: Finished difference Result 14338 states and 40111 transitions. [2022-03-03 17:11:22,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 17:11:22,416 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-03-03 17:11:22,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:22,451 INFO L225 Difference]: With dead ends: 14338 [2022-03-03 17:11:22,452 INFO L226 Difference]: Without dead ends: 14287 [2022-03-03 17:11:22,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-03-03 17:11:22,453 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 236 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:22,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 1492 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:11:22,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14287 states. [2022-03-03 17:11:22,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14287 to 11322. [2022-03-03 17:11:22,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11322 states, 11321 states have (on average 2.8554014663015637) internal successors, (32326), 11321 states have internal predecessors, (32326), 0 states have call successors, (0), 0 states 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 17:11:22,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11322 states to 11322 states and 32326 transitions. [2022-03-03 17:11:22,716 INFO L78 Accepts]: Start accepts. Automaton has 11322 states and 32326 transitions. Word has length 97 [2022-03-03 17:11:22,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:22,716 INFO L470 AbstractCegarLoop]: Abstraction has 11322 states and 32326 transitions. [2022-03-03 17:11:22,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:22,716 INFO L276 IsEmpty]: Start isEmpty. Operand 11322 states and 32326 transitions. [2022-03-03 17:11:22,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-03 17:11:22,739 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:22,740 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:11:22,756 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 17:11:22,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:11:22,952 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:22,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:22,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1845224352, now seen corresponding path program 5 times [2022-03-03 17:11:22,952 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:22,952 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474173968] [2022-03-03 17:11:22,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:22,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:23,071 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:23,072 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:23,072 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474173968] [2022-03-03 17:11:23,072 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474173968] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:11:23,072 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98426510] [2022-03-03 17:11:23,072 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:11:23,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:11:23,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:11:23,073 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 17:11:23,107 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 17:11:23,247 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:11:23,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:11:23,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-03 17:11:23,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:11:23,439 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:23,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:11:23,613 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:23,614 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98426510] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:11:23,614 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:11:23,614 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-03-03 17:11:23,614 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392557537] [2022-03-03 17:11:23,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:11:23,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 17:11:23,614 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:23,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 17:11:23,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-03 17:11:23,615 INFO L87 Difference]: Start difference. First operand 11322 states and 32326 transitions. Second operand has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:23,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:23,810 INFO L93 Difference]: Finished difference Result 13231 states and 37401 transitions. [2022-03-03 17:11:23,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 17:11:23,810 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-03-03 17:11:23,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:23,838 INFO L225 Difference]: With dead ends: 13231 [2022-03-03 17:11:23,838 INFO L226 Difference]: Without dead ends: 13180 [2022-03-03 17:11:23,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 192 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-03-03 17:11:23,839 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 227 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:23,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 968 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:11:23,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13180 states. [2022-03-03 17:11:24,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13180 to 12118. [2022-03-03 17:11:24,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12118 states, 12117 states have (on average 2.8667161838738964) internal successors, (34736), 12117 states have internal predecessors, (34736), 0 states have call successors, (0), 0 states 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 17:11:24,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12118 states to 12118 states and 34736 transitions. [2022-03-03 17:11:24,110 INFO L78 Accepts]: Start accepts. Automaton has 12118 states and 34736 transitions. Word has length 97 [2022-03-03 17:11:24,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:24,111 INFO L470 AbstractCegarLoop]: Abstraction has 12118 states and 34736 transitions. [2022-03-03 17:11:24,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:24,111 INFO L276 IsEmpty]: Start isEmpty. Operand 12118 states and 34736 transitions. [2022-03-03 17:11:24,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-03 17:11:24,135 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:24,135 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:11:24,151 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 17:11:24,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:11:24,339 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:24,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:24,339 INFO L85 PathProgramCache]: Analyzing trace with hash -524522290, now seen corresponding path program 6 times [2022-03-03 17:11:24,340 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:24,340 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930393971] [2022-03-03 17:11:24,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:24,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:24,486 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:11:24,486 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:24,486 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930393971] [2022-03-03 17:11:24,486 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930393971] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:11:24,486 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227714524] [2022-03-03 17:11:24,486 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:11:24,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:11:24,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:11:24,488 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 17:11:24,489 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 17:11:24,581 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 17:11:24,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:11:24,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-03 17:11:24,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:11:24,807 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:11:24,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:11:24,961 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:11:24,961 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227714524] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:11:24,961 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:11:24,961 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-03-03 17:11:24,961 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955325779] [2022-03-03 17:11:24,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:11:24,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-03 17:11:24,962 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:24,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-03 17:11:24,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-03-03 17:11:24,962 INFO L87 Difference]: Start difference. First operand 12118 states and 34736 transitions. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:25,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:25,240 INFO L93 Difference]: Finished difference Result 17960 states and 50551 transitions. [2022-03-03 17:11:25,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 17:11:25,240 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-03-03 17:11:25,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:25,277 INFO L225 Difference]: With dead ends: 17960 [2022-03-03 17:11:25,277 INFO L226 Difference]: Without dead ends: 17909 [2022-03-03 17:11:25,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-03-03 17:11:25,278 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 271 mSDsluCounter, 1029 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:25,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 1143 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:11:25,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17909 states. [2022-03-03 17:11:25,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17909 to 10198. [2022-03-03 17:11:25,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10198 states, 10197 states have (on average 2.8494655290771798) internal successors, (29056), 10197 states have internal predecessors, (29056), 0 states have call successors, (0), 0 states 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 17:11:25,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10198 states to 10198 states and 29056 transitions. [2022-03-03 17:11:25,536 INFO L78 Accepts]: Start accepts. Automaton has 10198 states and 29056 transitions. Word has length 97 [2022-03-03 17:11:25,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:25,536 INFO L470 AbstractCegarLoop]: Abstraction has 10198 states and 29056 transitions. [2022-03-03 17:11:25,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:25,536 INFO L276 IsEmpty]: Start isEmpty. Operand 10198 states and 29056 transitions. [2022-03-03 17:11:25,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-03 17:11:25,551 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:25,551 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:11:25,557 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 17:11:25,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-03-03 17:11:25,756 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:25,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:25,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1215593394, now seen corresponding path program 7 times [2022-03-03 17:11:25,756 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:25,756 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881094084] [2022-03-03 17:11:25,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:25,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:25,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:25,896 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:11:25,896 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:25,897 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881094084] [2022-03-03 17:11:25,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881094084] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:11:25,897 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041696065] [2022-03-03 17:11:25,897 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:11:25,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:11:25,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:11:25,898 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 17:11:25,899 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 17:11:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:25,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-03 17:11:25,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:11:26,155 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:11:26,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:11:26,308 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:11:26,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041696065] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:11:26,308 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:11:26,309 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-03-03 17:11:26,309 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971487624] [2022-03-03 17:11:26,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:11:26,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-03 17:11:26,309 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:26,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-03 17:11:26,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-03-03 17:11:26,310 INFO L87 Difference]: Start difference. First operand 10198 states and 29056 transitions. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:26,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:26,576 INFO L93 Difference]: Finished difference Result 13802 states and 38346 transitions. [2022-03-03 17:11:26,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 17:11:26,576 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-03-03 17:11:26,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:26,602 INFO L225 Difference]: With dead ends: 13802 [2022-03-03 17:11:26,602 INFO L226 Difference]: Without dead ends: 13751 [2022-03-03 17:11:26,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-03-03 17:11:26,603 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 262 mSDsluCounter, 1409 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:26,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 1511 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:11:26,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13751 states. [2022-03-03 17:11:26,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13751 to 9330. [2022-03-03 17:11:26,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9330 states, 9329 states have (on average 2.836424054025083) internal successors, (26461), 9329 states have internal predecessors, (26461), 0 states have call successors, (0), 0 states 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 17:11:26,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9330 states to 9330 states and 26461 transitions. [2022-03-03 17:11:26,830 INFO L78 Accepts]: Start accepts. Automaton has 9330 states and 26461 transitions. Word has length 97 [2022-03-03 17:11:26,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:26,830 INFO L470 AbstractCegarLoop]: Abstraction has 9330 states and 26461 transitions. [2022-03-03 17:11:26,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:26,831 INFO L276 IsEmpty]: Start isEmpty. Operand 9330 states and 26461 transitions. [2022-03-03 17:11:26,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-03-03 17:11:26,844 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:26,844 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:11:26,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-03 17:11:27,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-03 17:11:27,063 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:27,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:27,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1544870038, now seen corresponding path program 8 times [2022-03-03 17:11:27,063 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:27,063 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408994493] [2022-03-03 17:11:27,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:27,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:27,397 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:11:27,397 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:27,397 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408994493] [2022-03-03 17:11:27,397 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408994493] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:11:27,397 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607024215] [2022-03-03 17:11:27,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:11:27,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:11:27,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:11:27,412 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 17:11:27,425 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 17:11:27,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:11:27,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:11:27,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 17:11:27,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:11:29,045 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:11:29,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:11:30,782 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:11:30,782 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607024215] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:11:30,782 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:11:30,783 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 40 [2022-03-03 17:11:30,783 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143247317] [2022-03-03 17:11:30,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:11:30,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-03 17:11:30,783 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:30,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-03 17:11:30,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=1287, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:11:30,784 INFO L87 Difference]: Start difference. First operand 9330 states and 26461 transitions. Second operand has 40 states, 40 states have (on average 5.05) internal successors, (202), 40 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:34,226 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 17:11:41,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:41,799 INFO L93 Difference]: Finished difference Result 22223 states and 61509 transitions. [2022-03-03 17:11:41,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-03 17:11:41,800 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.05) internal successors, (202), 40 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2022-03-03 17:11:41,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:41,838 INFO L225 Difference]: With dead ends: 22223 [2022-03-03 17:11:41,839 INFO L226 Difference]: Without dead ends: 21785 [2022-03-03 17:11:41,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 182 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2210 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=1196, Invalid=5776, Unknown=0, NotChecked=0, Total=6972 [2022-03-03 17:11:41,840 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 2138 mSDsluCounter, 4685 mSDsCounter, 0 mSdLazyCounter, 1596 mSolverCounterSat, 128 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2138 SdHoareTripleChecker+Valid, 4479 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1596 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:41,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2138 Valid, 4479 Invalid, 1725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1596 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-03-03 17:11:41,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21785 states. [2022-03-03 17:11:42,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21785 to 11963. [2022-03-03 17:11:42,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11963 states, 11962 states have (on average 2.802457782979435) internal successors, (33523), 11962 states have internal predecessors, (33523), 0 states have call successors, (0), 0 states 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 17:11:42,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11963 states to 11963 states and 33523 transitions. [2022-03-03 17:11:42,223 INFO L78 Accepts]: Start accepts. Automaton has 11963 states and 33523 transitions. Word has length 104 [2022-03-03 17:11:42,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:42,223 INFO L470 AbstractCegarLoop]: Abstraction has 11963 states and 33523 transitions. [2022-03-03 17:11:42,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 5.05) internal successors, (202), 40 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:42,224 INFO L276 IsEmpty]: Start isEmpty. Operand 11963 states and 33523 transitions. [2022-03-03 17:11:42,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-03-03 17:11:42,239 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:42,239 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:11:42,246 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 17:11:42,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-03 17:11:42,444 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:42,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:42,444 INFO L85 PathProgramCache]: Analyzing trace with hash -763458489, now seen corresponding path program 9 times [2022-03-03 17:11:42,444 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:42,445 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941598621] [2022-03-03 17:11:42,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:42,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:42,717 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:11:42,718 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:42,718 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941598621] [2022-03-03 17:11:42,718 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941598621] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:11:42,718 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128607330] [2022-03-03 17:11:42,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:11:42,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:11:42,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:11:42,719 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 17:11:42,720 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 17:11:42,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 17:11:42,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:11:42,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 17:11:42,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:11:43,679 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:11:43,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:11:48,455 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:11:48,455 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128607330] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:11:48,455 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:11:48,455 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 38 [2022-03-03 17:11:48,455 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995514284] [2022-03-03 17:11:48,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:11:48,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-03-03 17:11:48,456 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:48,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-03-03 17:11:48,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1212, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:11:48,457 INFO L87 Difference]: Start difference. First operand 11963 states and 33523 transitions. Second operand has 38 states, 38 states have (on average 5.842105263157895) internal successors, (222), 38 states have internal predecessors, (222), 0 states have call successors, (0), 0 states 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 17:13:14,479 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:13:20,594 WARN L534 Checker$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 17:13:46,315 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:13:58,654 WARN L534 Checker$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 17:14:04,909 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 17:14:52,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:14:52,797 INFO L93 Difference]: Finished difference Result 32439 states and 89198 transitions. [2022-03-03 17:14:52,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-03-03 17:14:52,797 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.842105263157895) internal successors, (222), 38 states have internal predecessors, (222), 0 states have call successors, (0), 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 104 [2022-03-03 17:14:52,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:14:52,856 INFO L225 Difference]: With dead ends: 32439 [2022-03-03 17:14:52,856 INFO L226 Difference]: Without dead ends: 31671 [2022-03-03 17:14:52,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 187 SyntacticMatches, 2 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8775 ImplicationChecksByTransitivity, 155.7s TimeCoverageRelationStatistics Valid=4125, Invalid=22926, Unknown=9, NotChecked=0, Total=27060 [2022-03-03 17:14:52,861 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 3167 mSDsluCounter, 6701 mSDsCounter, 0 mSdLazyCounter, 2900 mSolverCounterSat, 180 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3167 SdHoareTripleChecker+Valid, 6451 SdHoareTripleChecker+Invalid, 3085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2900 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:14:52,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3167 Valid, 6451 Invalid, 3085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2900 Invalid, 5 Unknown, 0 Unchecked, 33.3s Time] [2022-03-03 17:14:52,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31671 states. [2022-03-03 17:14:53,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31671 to 24515. [2022-03-03 17:14:53,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24515 states, 24514 states have (on average 2.8329933915313696) internal successors, (69448), 24514 states have internal predecessors, (69448), 0 states have call successors, (0), 0 states 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 17:14:53,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24515 states to 24515 states and 69448 transitions. [2022-03-03 17:14:53,315 INFO L78 Accepts]: Start accepts. Automaton has 24515 states and 69448 transitions. Word has length 104 [2022-03-03 17:14:53,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:14:53,315 INFO L470 AbstractCegarLoop]: Abstraction has 24515 states and 69448 transitions. [2022-03-03 17:14:53,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 5.842105263157895) internal successors, (222), 38 states have internal predecessors, (222), 0 states have call successors, (0), 0 states 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 17:14:53,315 INFO L276 IsEmpty]: Start isEmpty. Operand 24515 states and 69448 transitions. [2022-03-03 17:14:53,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-03-03 17:14:53,351 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:14:53,351 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:14:53,356 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-03-03 17:14:53,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-03 17:14:53,555 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:14:53,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:14:53,556 INFO L85 PathProgramCache]: Analyzing trace with hash 412786434, now seen corresponding path program 10 times [2022-03-03 17:14:53,556 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:14:53,556 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061241523] [2022-03-03 17:14:53,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:14:53,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:14:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:14:53,809 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:14:53,809 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:14:53,809 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061241523] [2022-03-03 17:14:53,809 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061241523] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:14:53,809 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613667299] [2022-03-03 17:14:53,809 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:14:53,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:14:53,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:14:53,811 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 17:14:53,811 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 17:14:54,013 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:14:54,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:14:54,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 17:14:54,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:14:55,933 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:14:55,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:15:02,077 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:15:02,080 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613667299] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:15:02,080 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:15:02,080 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 18] total 44 [2022-03-03 17:15:02,080 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823065635] [2022-03-03 17:15:02,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:15:02,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-03-03 17:15:02,082 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:15:02,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-03-03 17:15:02,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1656, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 17:15:02,083 INFO L87 Difference]: Start difference. First operand 24515 states and 69448 transitions. Second operand has 44 states, 44 states have (on average 4.931818181818182) internal successors, (217), 44 states have internal predecessors, (217), 0 states have call successors, (0), 0 states 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 17:17:17,348 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:17:19,353 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:18:37,708 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:20:42,771 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:20:44,780 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:21:38,328 WARN L228 SmtUtils]: Spent 7.08s on a formula simplification. DAG size of input: 60 DAG size of output: 40 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-03 17:21:40,352 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (* c_~N~0 2))) (let ((.cse2 (mod .cse4 4294967296))) (let ((.cse0 (< (mod (+ 3 c_~i2~0) 4294967296) .cse2)) (.cse1 (not (< (mod (+ 2 c_~i2~0) 4294967296) .cse2))) (.cse5 (* |c_thread2Thread1of1ForFork1_#t~post4| (- 1)))) (and (or .cse0 .cse1 (< (mod (+ c_~i1~0 1) 4294967296) .cse2)) (or .cse0 .cse1 (< (mod (+ |c_thread1Thread1of1ForFork0_#t~post3| 1) 4294967296) .cse2)) (< (mod c_~i2~0 4294967296) .cse2) (< (mod (+ c_~i2~0 1) 4294967296) .cse2) (< (mod (+ |c_thread2Thread1of1ForFork1_#t~post4| 1) 4294967296) .cse2) (let ((.cse3 (* (div c_~i2~0 4294967296) 4294967296))) (<= (+ c_~i1~0 .cse3) (+ 2 c_~i2~0 (* (div (+ c_~i1~0 (- 2) (* (- 1) c_~i2~0) .cse3) 4294967296) 4294967296)))) (<= .cse4 (+ (* (div (+ .cse5 4294967293) 4294967296) 4294967296) |c_thread2Thread1of1ForFork1_#t~post4| (* 4294967296 (div .cse4 4294967296)) 2)) (<= c_~i1~0 (+ |c_thread2Thread1of1ForFork1_#t~post4| (* (div (+ c_~i1~0 (- 2) .cse5) 4294967296) 4294967296) 2)))))) is different from false [2022-03-03 17:23:16,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:23:16,173 INFO L93 Difference]: Finished difference Result 150729 states and 420157 transitions. [2022-03-03 17:23:16,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 267 states. [2022-03-03 17:23:16,174 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 4.931818181818182) internal successors, (217), 44 states have internal predecessors, (217), 0 states have call successors, (0), 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 104 [2022-03-03 17:23:16,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:23:16,737 INFO L225 Difference]: With dead ends: 150729 [2022-03-03 17:23:16,737 INFO L226 Difference]: Without dead ends: 149328 [2022-03-03 17:23:16,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 199 SyntacticMatches, 5 SemanticMatches, 295 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 35261 ImplicationChecksByTransitivity, 469.8s TimeCoverageRelationStatistics Valid=9739, Invalid=77557, Unknown=28, NotChecked=588, Total=87912 [2022-03-03 17:23:16,764 INFO L933 BasicCegarLoop]: 403 mSDtfsCounter, 4030 mSDsluCounter, 9763 mSDsCounter, 0 mSdLazyCounter, 3291 mSolverCounterSat, 294 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4030 SdHoareTripleChecker+Valid, 8605 SdHoareTripleChecker+Invalid, 6094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 3291 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 2506 IncrementalHoareTripleChecker+Unchecked, 30.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:23:16,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4030 Valid, 8605 Invalid, 6094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 3291 Invalid, 3 Unknown, 2506 Unchecked, 30.0s Time] [2022-03-03 17:23:16,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149328 states. [2022-03-03 17:23:18,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149328 to 48255. [2022-03-03 17:23:18,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48255 states, 48254 states have (on average 2.856011936834252) internal successors, (137814), 48254 states have internal predecessors, (137814), 0 states have call successors, (0), 0 states 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 17:23:19,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48255 states to 48255 states and 137814 transitions. [2022-03-03 17:23:19,091 INFO L78 Accepts]: Start accepts. Automaton has 48255 states and 137814 transitions. Word has length 104 [2022-03-03 17:23:19,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:23:19,091 INFO L470 AbstractCegarLoop]: Abstraction has 48255 states and 137814 transitions. [2022-03-03 17:23:19,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 4.931818181818182) internal successors, (217), 44 states have internal predecessors, (217), 0 states have call successors, (0), 0 states 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 17:23:19,091 INFO L276 IsEmpty]: Start isEmpty. Operand 48255 states and 137814 transitions. [2022-03-03 17:23:19,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-03-03 17:23:19,314 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:23:19,314 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:23:19,324 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 17:23:19,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:23:19,518 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:23:19,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:23:19,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1218314188, now seen corresponding path program 11 times [2022-03-03 17:23:19,519 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:23:19,519 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541720626] [2022-03-03 17:23:19,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:23:19,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:23:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:23:19,918 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:23:19,918 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:23:19,918 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541720626] [2022-03-03 17:23:19,918 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541720626] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:23:19,918 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856287946] [2022-03-03 17:23:19,919 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:23:19,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:23:19,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:23:19,920 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 17:23:19,921 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 17:23:20,127 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:23:20,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:23:20,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 17:23:20,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:23:21,153 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:23:21,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:23:30,656 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:23:30,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856287946] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:23:30,656 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:23:30,656 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 37 [2022-03-03 17:23:30,656 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922572839] [2022-03-03 17:23:30,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:23:30,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-03 17:23:30,657 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:23:30,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-03 17:23:30,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1182, Unknown=2, NotChecked=0, Total=1332 [2022-03-03 17:23:30,657 INFO L87 Difference]: Start difference. First operand 48255 states and 137814 transitions. Second operand has 37 states, 37 states have (on average 5.351351351351352) internal successors, (198), 37 states have internal predecessors, (198), 0 states have call successors, (0), 0 states 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 17:24:56,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:24:56,194 INFO L93 Difference]: Finished difference Result 69849 states and 196305 transitions. [2022-03-03 17:24:56,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-03 17:24:56,194 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.351351351351352) internal successors, (198), 37 states have internal predecessors, (198), 0 states have call successors, (0), 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 104 [2022-03-03 17:24:56,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:24:56,457 INFO L225 Difference]: With dead ends: 69849 [2022-03-03 17:24:56,457 INFO L226 Difference]: Without dead ends: 68705 [2022-03-03 17:24:56,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 195 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1812 ImplicationChecksByTransitivity, 92.1s TimeCoverageRelationStatistics Valid=686, Invalid=6097, Unknown=23, NotChecked=0, Total=6806 [2022-03-03 17:24:56,466 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 1264 mSDsluCounter, 5389 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1264 SdHoareTripleChecker+Valid, 5276 SdHoareTripleChecker+Invalid, 1912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 839 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:24:56,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1264 Valid, 5276 Invalid, 1912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1045 Invalid, 0 Unknown, 839 Unchecked, 2.5s Time] [2022-03-03 17:24:56,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68705 states. [2022-03-03 17:24:57,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68705 to 57103. [2022-03-03 17:24:57,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57103 states, 57102 states have (on average 2.8602500788063465) internal successors, (163326), 57102 states have internal predecessors, (163326), 0 states have call successors, (0), 0 states 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 17:24:58,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57103 states to 57103 states and 163326 transitions. [2022-03-03 17:24:58,119 INFO L78 Accepts]: Start accepts. Automaton has 57103 states and 163326 transitions. Word has length 104 [2022-03-03 17:24:58,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:24:58,119 INFO L470 AbstractCegarLoop]: Abstraction has 57103 states and 163326 transitions. [2022-03-03 17:24:58,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.351351351351352) internal successors, (198), 37 states have internal predecessors, (198), 0 states have call successors, (0), 0 states 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 17:24:58,119 INFO L276 IsEmpty]: Start isEmpty. Operand 57103 states and 163326 transitions. [2022-03-03 17:24:58,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-03-03 17:24:58,199 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:24:58,199 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:24:58,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-03-03 17:24:58,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-03-03 17:24:58,401 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:24:58,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:24:58,401 INFO L85 PathProgramCache]: Analyzing trace with hash -871180865, now seen corresponding path program 12 times [2022-03-03 17:24:58,401 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:24:58,401 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316858137] [2022-03-03 17:24:58,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:24:58,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:24:58,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:24:58,861 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:24:58,861 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:24:58,861 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316858137] [2022-03-03 17:24:58,861 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316858137] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:24:58,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519600083] [2022-03-03 17:24:58,862 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:24:58,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:24:58,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:24:58,863 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 17:24:58,863 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 17:24:59,187 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 17:24:59,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:24:59,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 17:24:59,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:25:00,435 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:25:00,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:25:06,068 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:25:06,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519600083] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:25:06,068 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:25:06,069 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 39 [2022-03-03 17:25:06,069 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297246259] [2022-03-03 17:25:06,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:25:06,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 17:25:06,070 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:25:06,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 17:25:06,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1312, Unknown=1, NotChecked=0, Total=1482 [2022-03-03 17:25:06,070 INFO L87 Difference]: Start difference. First operand 57103 states and 163326 transitions. Second operand has 39 states, 39 states have (on average 4.923076923076923) internal successors, (192), 39 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-03-03 17:25:31,540 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 17:25:31,540 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 17:25:32,558 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 17:25:32,741 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-03-03 17:25:32,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-03 17:25:32,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 185 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1004 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=602, Invalid=3557, Unknown=1, NotChecked=0, Total=4160 [2022-03-03 17:25:32,750 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 862 mSDsluCounter, 1989 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 1928 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 190 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:25:32,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [862 Valid, 1928 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 621 Invalid, 0 Unknown, 190 Unchecked, 1.2s Time] [2022-03-03 17:25:32,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-03 17:25:32,751 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Not enough levels on assertion stack at de.uni_freiburg.informatik.ultimate.logic.NoopScript.pop(NoopScript.java:272) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:138) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.pop(UndoableWrapperScript.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.restore(UndoableWrapperScript.java:87) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:242) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:160) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:388) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-03-03 17:25:32,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 [2022-03-03 17:25:32,755 INFO L158 Benchmark]: Toolchain (without parser) took 864764.45ms. Allocated memory was 180.4MB in the beginning and 651.2MB in the end (delta: 470.8MB). Free memory was 130.5MB in the beginning and 283.8MB in the end (delta: -153.4MB). Peak memory consumption was 318.8MB. Max. memory is 8.0GB. [2022-03-03 17:25:32,756 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 180.4MB. Free memory is still 146.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-03 17:25:32,756 INFO L158 Benchmark]: CACSL2BoogieTranslator took 201.39ms. Allocated memory is still 180.4MB. Free memory was 130.3MB in the beginning and 156.4MB in the end (delta: -26.1MB). Peak memory consumption was 13.7MB. Max. memory is 8.0GB. [2022-03-03 17:25:32,756 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.00ms. Allocated memory is still 180.4MB. Free memory was 156.4MB in the beginning and 154.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-03 17:25:32,756 INFO L158 Benchmark]: Boogie Preprocessor took 26.63ms. Allocated memory is still 180.4MB. Free memory was 154.7MB in the beginning and 153.3MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-03 17:25:32,756 INFO L158 Benchmark]: RCFGBuilder took 379.08ms. Allocated memory is still 180.4MB. Free memory was 153.3MB in the beginning and 140.2MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-03-03 17:25:32,756 INFO L158 Benchmark]: TraceAbstraction took 864114.51ms. Allocated memory was 180.4MB in the beginning and 651.2MB in the end (delta: 470.8MB). Free memory was 139.7MB in the beginning and 283.9MB in the end (delta: -144.2MB). Peak memory consumption was 328.2MB. Max. memory is 8.0GB. [2022-03-03 17:25:32,757 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 180.4MB. Free memory is still 146.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 201.39ms. Allocated memory is still 180.4MB. Free memory was 130.3MB in the beginning and 156.4MB in the end (delta: -26.1MB). Peak memory consumption was 13.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.00ms. Allocated memory is still 180.4MB. Free memory was 156.4MB in the beginning and 154.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.63ms. Allocated memory is still 180.4MB. Free memory was 154.7MB in the beginning and 153.3MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 379.08ms. Allocated memory is still 180.4MB. Free memory was 153.3MB in the beginning and 140.2MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 864114.51ms. Allocated memory was 180.4MB in the beginning and 651.2MB in the end (delta: 470.8MB). Free memory was 139.7MB in the beginning and 283.9MB in the end (delta: -144.2MB). Peak memory consumption was 328.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Not enough levels on assertion stack de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Not enough levels on assertion stack: de.uni_freiburg.informatik.ultimate.logic.NoopScript.pop(NoopScript.java:272) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown