/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 14:26:20,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 14:26:20,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 14:26:20,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-15 14:26:20,158 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 14:26:20,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 14:26:20,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 14:26:20,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 14:26:20,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 14:26:20,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 14:26:20,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 14:26:20,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 14:26:20,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 14:26:20,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 14:26:20,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 14:26:20,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 14:26:20,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-15 14:26:20,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 14:26:20,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 14:26:20,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 14:26:20,175 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 [2022-03-15 14:26:20,189 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 14:26:20,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 14:26:20,189 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-15 14:26:20,189 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-15 14:26:20,190 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 14:26:20,191 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 14:26:20,191 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 14:26:20,191 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 14:26:20,192 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 14:26:20,192 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 14:26:20,192 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 14:26:20,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 14:26:20,193 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 14:26:20,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 14:26:20,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 14:26:20,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 14:26:20,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 14:26:20,193 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 14:26:20,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 14:26:20,194 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 14:26:20,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 14:26:20,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 14:26:20,194 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 14:26:20,194 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 14:26:20,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 14:26:20,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 14:26:20,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 14:26:20,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-15 14:26:20,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 14:26:20,196 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 14:26:20,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 14:26:20,196 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-15 14:26:20,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 14:26:20,196 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 14:26:20,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 14:26:20,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 14:26:20,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 14:26:20,392 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 14:26:20,396 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 14:26:20,397 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2022-03-15 14:26:20,473 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/405df040e/29a5701ac8464a6b8d96d257a5c102a0/FLAG6b07fa81e [2022-03-15 14:26:20,770 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 14:26:20,771 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2022-03-15 14:26:20,776 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/405df040e/29a5701ac8464a6b8d96d257a5c102a0/FLAG6b07fa81e [2022-03-15 14:26:21,230 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/405df040e/29a5701ac8464a6b8d96d257a5c102a0 [2022-03-15 14:26:21,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 14:26:21,233 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 14:26:21,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 14:26:21,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 14:26:21,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 14:26:21,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 02:26:21" (1/1) ... [2022-03-15 14:26:21,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dfb5317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:26:21, skipping insertion in model container [2022-03-15 14:26:21,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 02:26:21" (1/1) ... [2022-03-15 14:26:21,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 14:26:21,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 14:26:21,400 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c[2611,2624] [2022-03-15 14:26:21,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 14:26:21,407 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 14:26:21,422 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c[2611,2624] [2022-03-15 14:26:21,423 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 14:26:21,432 INFO L208 MainTranslator]: Completed translation [2022-03-15 14:26:21,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:26:21 WrapperNode [2022-03-15 14:26:21,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 14:26:21,434 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 14:26:21,434 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 14:26:21,434 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 14:26:21,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:26:21" (1/1) ... [2022-03-15 14:26:21,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:26:21" (1/1) ... [2022-03-15 14:26:21,460 INFO L137 Inliner]: procedures = 22, calls = 42, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 133 [2022-03-15 14:26:21,460 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 14:26:21,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 14:26:21,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 14:26:21,461 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 14:26:21,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:26:21" (1/1) ... [2022-03-15 14:26:21,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:26:21" (1/1) ... [2022-03-15 14:26:21,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:26:21" (1/1) ... [2022-03-15 14:26:21,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:26:21" (1/1) ... [2022-03-15 14:26:21,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:26:21" (1/1) ... [2022-03-15 14:26:21,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:26:21" (1/1) ... [2022-03-15 14:26:21,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:26:21" (1/1) ... [2022-03-15 14:26:21,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 14:26:21,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 14:26:21,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 14:26:21,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 14:26:21,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:26:21" (1/1) ... [2022-03-15 14:26:21,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 14:26:21,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:26:21,528 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) [2022-03-15 14:26:21,534 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 [2022-03-15 14:26:21,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 14:26:21,562 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 14:26:21,562 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 14:26:21,563 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 14:26:21,563 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 14:26:21,563 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-15 14:26:21,563 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-15 14:26:21,563 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-03-15 14:26:21,565 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-03-15 14:26:21,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 14:26:21,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 14:26:21,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 14:26:21,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-15 14:26:21,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-15 14:26:21,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 14:26:21,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 14:26:21,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-15 14:26:21,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 14:26:21,567 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 14:26:21,624 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 14:26:21,625 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 14:26:21,792 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 14:26:21,850 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 14:26:21,850 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-03-15 14:26:21,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 02:26:21 BoogieIcfgContainer [2022-03-15 14:26:21,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 14:26:21,854 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 14:26:21,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 14:26:21,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 14:26:21,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 02:26:21" (1/3) ... [2022-03-15 14:26:21,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b8c93ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 02:26:21, skipping insertion in model container [2022-03-15 14:26:21,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:26:21" (2/3) ... [2022-03-15 14:26:21,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b8c93ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 02:26:21, skipping insertion in model container [2022-03-15 14:26:21,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 02:26:21" (3/3) ... [2022-03-15 14:26:21,858 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-proofs-counter-add-4-semi-Q67.wvr.c [2022-03-15 14:26:21,861 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 14:26:21,861 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-15 14:26:21,862 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 14:26:21,862 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 14:26:21,916 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,916 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,917 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,917 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,917 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,917 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,917 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,917 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,918 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,918 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,918 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,918 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,919 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,919 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,919 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,919 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,919 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,919 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,919 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,920 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,920 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,920 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,921 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,921 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,921 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,921 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,921 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,921 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,922 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,922 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,922 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,922 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,923 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,923 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,923 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,923 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,923 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,923 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,924 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,924 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,926 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,927 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,927 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,927 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,928 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,928 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,928 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,928 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,929 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,929 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,929 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,929 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,929 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,929 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,930 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,930 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,930 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,930 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,931 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,931 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:26:21,935 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-03-15 14:26:21,965 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 14:26:21,970 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 [2022-03-15 14:26:21,970 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-03-15 14:26:21,980 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 134 places, 131 transitions, 294 flow [2022-03-15 14:26:22,250 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3953 states, 3952 states have (on average 5.05414979757085) internal successors, (19974), 3952 states have internal predecessors, (19974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:22,268 INFO L276 IsEmpty]: Start isEmpty. Operand has 3953 states, 3952 states have (on average 5.05414979757085) internal successors, (19974), 3952 states have internal predecessors, (19974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:22,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-03-15 14:26:22,308 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:26:22,309 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:26:22,310 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:26:22,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:26:22,314 INFO L85 PathProgramCache]: Analyzing trace with hash 621740972, now seen corresponding path program 1 times [2022-03-15 14:26:22,320 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:26:22,320 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505601538] [2022-03-15 14:26:22,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:26:22,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:26:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:26:22,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:26:22,506 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:26:22,506 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505601538] [2022-03-15 14:26:22,506 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505601538] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:26:22,507 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:26:22,507 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 14:26:22,508 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501325451] [2022-03-15 14:26:22,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:26:22,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-15 14:26:22,520 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:26:22,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-15 14:26:22,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-15 14:26:22,573 INFO L87 Difference]: Start difference. First operand has 3953 states, 3952 states have (on average 5.05414979757085) internal successors, (19974), 3952 states have internal predecessors, (19974), 0 states have call successors, (0), 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 49.0) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:22,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:26:22,742 INFO L93 Difference]: Finished difference Result 3953 states and 17198 transitions. [2022-03-15 14:26:22,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-15 14:26:22,744 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-03-15 14:26:22,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:26:22,798 INFO L225 Difference]: With dead ends: 3953 [2022-03-15 14:26:22,799 INFO L226 Difference]: Without dead ends: 3951 [2022-03-15 14:26:22,800 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 [2022-03-15 14:26:22,803 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:26:22,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 96 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:26:22,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2022-03-15 14:26:22,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 3951. [2022-03-15 14:26:23,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3951 states, 3950 states have (on average 4.353417721518987) internal successors, (17196), 3950 states have internal predecessors, (17196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:23,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 17196 transitions. [2022-03-15 14:26:23,079 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 17196 transitions. Word has length 98 [2022-03-15 14:26:23,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:26:23,081 INFO L470 AbstractCegarLoop]: Abstraction has 3951 states and 17196 transitions. [2022-03-15 14:26:23,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:23,081 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 17196 transitions. [2022-03-15 14:26:23,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-03-15 14:26:23,097 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:26:23,097 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:26:23,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 14:26:23,098 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:26:23,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:26:23,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1371881006, now seen corresponding path program 1 times [2022-03-15 14:26:23,100 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:26:23,101 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292289852] [2022-03-15 14:26:23,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:26:23,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:26:23,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:26:23,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:26:23,313 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:26:23,313 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292289852] [2022-03-15 14:26:23,313 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292289852] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:26:23,313 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:26:23,314 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 14:26:23,314 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980227292] [2022-03-15 14:26:23,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:26:23,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 14:26:23,315 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:26:23,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 14:26:23,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:26:23,316 INFO L87 Difference]: Start difference. First operand 3951 states and 17196 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:23,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:26:23,462 INFO L93 Difference]: Finished difference Result 7852 states and 32994 transitions. [2022-03-15 14:26:23,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 14:26:23,462 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-03-15 14:26:23,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:26:23,554 INFO L225 Difference]: With dead ends: 7852 [2022-03-15 14:26:23,554 INFO L226 Difference]: Without dead ends: 6391 [2022-03-15 14:26:23,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-15 14:26:23,555 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 8 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:26:23,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 328 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:26:23,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6391 states. [2022-03-15 14:26:23,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6391 to 6031. [2022-03-15 14:26:23,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6031 states, 6030 states have (on average 4.253233830845772) internal successors, (25647), 6030 states have internal predecessors, (25647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:23,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6031 states to 6031 states and 25647 transitions. [2022-03-15 14:26:23,802 INFO L78 Accepts]: Start accepts. Automaton has 6031 states and 25647 transitions. Word has length 98 [2022-03-15 14:26:23,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:26:23,805 INFO L470 AbstractCegarLoop]: Abstraction has 6031 states and 25647 transitions. [2022-03-15 14:26:23,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:23,806 INFO L276 IsEmpty]: Start isEmpty. Operand 6031 states and 25647 transitions. [2022-03-15 14:26:23,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-03-15 14:26:23,825 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:26:23,826 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:26:23,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 14:26:23,826 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:26:23,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:26:23,827 INFO L85 PathProgramCache]: Analyzing trace with hash -330592620, now seen corresponding path program 1 times [2022-03-15 14:26:23,828 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:26:23,828 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892472607] [2022-03-15 14:26:23,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:26:23,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:26:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:26:24,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:26:24,087 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:26:24,088 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892472607] [2022-03-15 14:26:24,088 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892472607] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:26:24,088 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:26:24,088 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 14:26:24,088 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742119198] [2022-03-15 14:26:24,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:26:24,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 14:26:24,089 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:26:24,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 14:26:24,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-15 14:26:24,089 INFO L87 Difference]: Start difference. First operand 6031 states and 25647 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:24,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:26:24,462 INFO L93 Difference]: Finished difference Result 12359 states and 52502 transitions. [2022-03-15 14:26:24,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 14:26:24,463 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-03-15 14:26:24,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:26:24,533 INFO L225 Difference]: With dead ends: 12359 [2022-03-15 14:26:24,533 INFO L226 Difference]: Without dead ends: 11771 [2022-03-15 14:26:24,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-03-15 14:26:24,534 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 358 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:26:24,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 589 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:26:24,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11771 states. [2022-03-15 14:26:24,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11771 to 5443. [2022-03-15 14:26:24,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5443 states, 5442 states have (on average 4.299889746416759) internal successors, (23400), 5442 states have internal predecessors, (23400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:24,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5443 states to 5443 states and 23400 transitions. [2022-03-15 14:26:24,836 INFO L78 Accepts]: Start accepts. Automaton has 5443 states and 23400 transitions. Word has length 100 [2022-03-15 14:26:24,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:26:24,839 INFO L470 AbstractCegarLoop]: Abstraction has 5443 states and 23400 transitions. [2022-03-15 14:26:24,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:24,839 INFO L276 IsEmpty]: Start isEmpty. Operand 5443 states and 23400 transitions. [2022-03-15 14:26:24,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-03-15 14:26:24,861 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:26:24,861 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:26:24,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 14:26:24,862 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:26:24,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:26:24,862 INFO L85 PathProgramCache]: Analyzing trace with hash -858528176, now seen corresponding path program 1 times [2022-03-15 14:26:24,862 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:26:24,862 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630836576] [2022-03-15 14:26:24,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:26:24,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:26:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:26:25,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:26:25,129 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:26:25,129 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630836576] [2022-03-15 14:26:25,129 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630836576] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:26:25,129 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717971871] [2022-03-15 14:26:25,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:26:25,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:26:25,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:26:25,131 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) [2022-03-15 14:26:25,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-15 14:26:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:26:25,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-15 14:26:25,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:26:25,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:26:25,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:26:25,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:26:25,984 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717971871] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-15 14:26:25,984 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-15 14:26:25,984 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11, 8] total 22 [2022-03-15 14:26:25,986 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746382266] [2022-03-15 14:26:25,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:26:25,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 14:26:25,988 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:26:25,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 14:26:25,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:26:25,989 INFO L87 Difference]: Start difference. First operand 5443 states and 23400 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:26,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:26:26,275 INFO L93 Difference]: Finished difference Result 13827 states and 58858 transitions. [2022-03-15 14:26:26,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 14:26:26,275 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-03-15 14:26:26,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:26:26,343 INFO L225 Difference]: With dead ends: 13827 [2022-03-15 14:26:26,343 INFO L226 Difference]: Without dead ends: 13827 [2022-03-15 14:26:26,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=154, Invalid=658, Unknown=0, NotChecked=0, Total=812 [2022-03-15 14:26:26,349 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 423 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:26:26,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [423 Valid, 478 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:26:26,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13827 states. [2022-03-15 14:26:26,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13827 to 6328. [2022-03-15 14:26:26,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 4.34392287023866) internal successors, (27484), 6327 states have internal predecessors, (27484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:26,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 27484 transitions. [2022-03-15 14:26:26,698 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 27484 transitions. Word has length 100 [2022-03-15 14:26:26,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:26:26,698 INFO L470 AbstractCegarLoop]: Abstraction has 6328 states and 27484 transitions. [2022-03-15 14:26:26,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:26,699 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 27484 transitions. [2022-03-15 14:26:26,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-03-15 14:26:26,721 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:26:26,721 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:26:26,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-15 14:26:26,935 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 [2022-03-15 14:26:26,936 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:26:26,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:26:26,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1176334216, now seen corresponding path program 2 times [2022-03-15 14:26:26,936 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:26:26,936 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112937662] [2022-03-15 14:26:26,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:26:26,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:26:26,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:26:27,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:26:27,105 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:26:27,105 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112937662] [2022-03-15 14:26:27,105 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112937662] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:26:27,105 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:26:27,105 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 14:26:27,106 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139017049] [2022-03-15 14:26:27,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:26:27,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 14:26:27,107 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:26:27,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 14:26:27,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-15 14:26:27,108 INFO L87 Difference]: Start difference. First operand 6328 states and 27484 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:27,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:26:27,366 INFO L93 Difference]: Finished difference Result 13356 states and 58883 transitions. [2022-03-15 14:26:27,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 14:26:27,367 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-03-15 14:26:27,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:26:27,425 INFO L225 Difference]: With dead ends: 13356 [2022-03-15 14:26:27,425 INFO L226 Difference]: Without dead ends: 13176 [2022-03-15 14:26:27,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-03-15 14:26:27,426 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 285 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:26:27,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 531 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:26:27,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13176 states. [2022-03-15 14:26:27,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13176 to 6718. [2022-03-15 14:26:27,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6718 states, 6717 states have (on average 4.3897573321423256) internal successors, (29486), 6717 states have internal predecessors, (29486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:27,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6718 states to 6718 states and 29486 transitions. [2022-03-15 14:26:27,767 INFO L78 Accepts]: Start accepts. Automaton has 6718 states and 29486 transitions. Word has length 100 [2022-03-15 14:26:27,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:26:27,767 INFO L470 AbstractCegarLoop]: Abstraction has 6718 states and 29486 transitions. [2022-03-15 14:26:27,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:27,768 INFO L276 IsEmpty]: Start isEmpty. Operand 6718 states and 29486 transitions. [2022-03-15 14:26:27,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-03-15 14:26:27,784 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:26:27,784 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:26:27,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-15 14:26:27,785 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:26:27,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:26:27,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1016067836, now seen corresponding path program 3 times [2022-03-15 14:26:27,785 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:26:27,785 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395716918] [2022-03-15 14:26:27,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:26:27,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:26:27,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:26:27,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:26:27,897 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:26:27,898 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395716918] [2022-03-15 14:26:27,898 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395716918] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:26:27,898 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:26:27,898 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 14:26:27,898 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408471997] [2022-03-15 14:26:27,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:26:27,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 14:26:27,898 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:26:27,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 14:26:27,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-03-15 14:26:27,899 INFO L87 Difference]: Start difference. First operand 6718 states and 29486 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:28,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:26:28,217 INFO L93 Difference]: Finished difference Result 12636 states and 55639 transitions. [2022-03-15 14:26:28,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 14:26:28,218 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-03-15 14:26:28,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:26:28,268 INFO L225 Difference]: With dead ends: 12636 [2022-03-15 14:26:28,268 INFO L226 Difference]: Without dead ends: 12636 [2022-03-15 14:26:28,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2022-03-15 14:26:28,269 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 336 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:26:28,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 494 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:26:28,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12636 states. [2022-03-15 14:26:28,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12636 to 6898. [2022-03-15 14:26:28,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6898 states, 6897 states have (on average 4.379585326953748) internal successors, (30206), 6897 states have internal predecessors, (30206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:28,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6898 states to 6898 states and 30206 transitions. [2022-03-15 14:26:28,477 INFO L78 Accepts]: Start accepts. Automaton has 6898 states and 30206 transitions. Word has length 100 [2022-03-15 14:26:28,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:26:28,480 INFO L470 AbstractCegarLoop]: Abstraction has 6898 states and 30206 transitions. [2022-03-15 14:26:28,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:28,481 INFO L276 IsEmpty]: Start isEmpty. Operand 6898 states and 30206 transitions. [2022-03-15 14:26:28,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-03-15 14:26:28,499 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:26:28,499 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:26:28,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-15 14:26:28,499 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:26:28,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:26:28,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1053585950, now seen corresponding path program 4 times [2022-03-15 14:26:28,500 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:26:28,500 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029336732] [2022-03-15 14:26:28,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:26:28,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:26:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:26:28,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:26:28,754 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:26:28,754 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029336732] [2022-03-15 14:26:28,754 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029336732] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:26:28,754 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795083065] [2022-03-15 14:26:28,754 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:26:28,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:26:28,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:26:28,755 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) [2022-03-15 14:26:28,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-15 14:26:28,828 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:26:28,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:26:28,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-15 14:26:28,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:26:29,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:26:29,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 14:26:29,234 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795083065] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:26:29,234 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 14:26:29,234 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-03-15 14:26:29,234 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055405990] [2022-03-15 14:26:29,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:26:29,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 14:26:29,235 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:26:29,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 14:26:29,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-03-15 14:26:29,235 INFO L87 Difference]: Start difference. First operand 6898 states and 30206 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:29,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:26:29,445 INFO L93 Difference]: Finished difference Result 10234 states and 44384 transitions. [2022-03-15 14:26:29,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 14:26:29,445 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-03-15 14:26:29,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:26:29,481 INFO L225 Difference]: With dead ends: 10234 [2022-03-15 14:26:29,481 INFO L226 Difference]: Without dead ends: 10108 [2022-03-15 14:26:29,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:26:29,482 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 285 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:26:29,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 401 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:26:29,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10108 states. [2022-03-15 14:26:29,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10108 to 6754. [2022-03-15 14:26:29,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6754 states, 6753 states have (on average 4.391233525840367) internal successors, (29654), 6753 states have internal predecessors, (29654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:29,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6754 states to 6754 states and 29654 transitions. [2022-03-15 14:26:29,808 INFO L78 Accepts]: Start accepts. Automaton has 6754 states and 29654 transitions. Word has length 100 [2022-03-15 14:26:29,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:26:29,808 INFO L470 AbstractCegarLoop]: Abstraction has 6754 states and 29654 transitions. [2022-03-15 14:26:29,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:29,808 INFO L276 IsEmpty]: Start isEmpty. Operand 6754 states and 29654 transitions. [2022-03-15 14:26:29,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-03-15 14:26:29,838 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:26:29,838 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:26:29,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-15 14:26:30,038 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 [2022-03-15 14:26:30,039 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:26:30,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:26:30,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1097611240, now seen corresponding path program 2 times [2022-03-15 14:26:30,039 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:26:30,039 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630373716] [2022-03-15 14:26:30,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:26:30,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:26:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:26:30,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:26:30,201 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:26:30,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630373716] [2022-03-15 14:26:30,201 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630373716] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:26:30,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994650885] [2022-03-15 14:26:30,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:26:30,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:26:30,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:26:30,207 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) [2022-03-15 14:26:30,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-15 14:26:30,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:26:30,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:26:30,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-15 14:26:30,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:26:30,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:26:30,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:26:30,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:26:30,917 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994650885] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-15 14:26:30,917 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-15 14:26:30,917 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 20 [2022-03-15 14:26:30,918 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116245918] [2022-03-15 14:26:30,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:26:30,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 14:26:30,918 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:26:30,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 14:26:30,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:26:30,919 INFO L87 Difference]: Start difference. First operand 6754 states and 29654 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:31,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:26:31,114 INFO L93 Difference]: Finished difference Result 9729 states and 41658 transitions. [2022-03-15 14:26:31,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 14:26:31,114 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-03-15 14:26:31,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:26:31,144 INFO L225 Difference]: With dead ends: 9729 [2022-03-15 14:26:31,145 INFO L226 Difference]: Without dead ends: 9033 [2022-03-15 14:26:31,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2022-03-15 14:26:31,145 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 308 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:26:31,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 578 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:26:31,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9033 states. [2022-03-15 14:26:31,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9033 to 6222. [2022-03-15 14:26:31,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6222 states, 6221 states have (on average 4.355409098215721) internal successors, (27095), 6221 states have internal predecessors, (27095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:31,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6222 states to 6222 states and 27095 transitions. [2022-03-15 14:26:31,302 INFO L78 Accepts]: Start accepts. Automaton has 6222 states and 27095 transitions. Word has length 100 [2022-03-15 14:26:31,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:26:31,302 INFO L470 AbstractCegarLoop]: Abstraction has 6222 states and 27095 transitions. [2022-03-15 14:26:31,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:31,302 INFO L276 IsEmpty]: Start isEmpty. Operand 6222 states and 27095 transitions. [2022-03-15 14:26:31,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-03-15 14:26:31,319 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:26:31,319 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:26:31,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-15 14:26:31,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:26:31,520 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:26:31,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:26:31,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1717384526, now seen corresponding path program 1 times [2022-03-15 14:26:31,521 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:26:31,521 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503460621] [2022-03-15 14:26:31,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:26:31,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:26:31,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:26:31,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:26:31,801 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:26:31,801 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503460621] [2022-03-15 14:26:31,801 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503460621] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:26:31,801 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672667877] [2022-03-15 14:26:31,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:26:31,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:26:31,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:26:31,803 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) [2022-03-15 14:26:31,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-15 14:26:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:26:31,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-15 14:26:31,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:26:32,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:26:32,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:26:32,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:26:32,258 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672667877] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:26:32,258 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:26:32,258 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 13 [2022-03-15 14:26:32,258 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722162973] [2022-03-15 14:26:32,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:26:32,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 14:26:32,258 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:26:32,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 14:26:32,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-15 14:26:32,259 INFO L87 Difference]: Start difference. First operand 6222 states and 27095 transitions. Second operand has 13 states, 13 states have (on average 14.923076923076923) internal successors, (194), 13 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:32,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:26:32,825 INFO L93 Difference]: Finished difference Result 32471 states and 138800 transitions. [2022-03-15 14:26:32,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-15 14:26:32,825 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 14.923076923076923) internal successors, (194), 13 states have internal predecessors, (194), 0 states have call successors, (0), 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 102 [2022-03-15 14:26:32,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:26:32,932 INFO L225 Difference]: With dead ends: 32471 [2022-03-15 14:26:32,932 INFO L226 Difference]: Without dead ends: 27653 [2022-03-15 14:26:32,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 197 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2022-03-15 14:26:32,933 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 450 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:26:32,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 1306 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:26:32,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27653 states. [2022-03-15 14:26:33,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27653 to 14070. [2022-03-15 14:26:33,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14070 states, 14069 states have (on average 4.408771056933684) internal successors, (62027), 14069 states have internal predecessors, (62027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:33,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14070 states to 14070 states and 62027 transitions. [2022-03-15 14:26:33,531 INFO L78 Accepts]: Start accepts. Automaton has 14070 states and 62027 transitions. Word has length 102 [2022-03-15 14:26:33,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:26:33,531 INFO L470 AbstractCegarLoop]: Abstraction has 14070 states and 62027 transitions. [2022-03-15 14:26:33,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.923076923076923) internal successors, (194), 13 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:33,531 INFO L276 IsEmpty]: Start isEmpty. Operand 14070 states and 62027 transitions. [2022-03-15 14:26:33,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-03-15 14:26:33,697 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:26:33,697 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:26:33,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-03-15 14:26:33,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:26:33,900 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:26:33,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:26:33,900 INFO L85 PathProgramCache]: Analyzing trace with hash 631182096, now seen corresponding path program 1 times [2022-03-15 14:26:33,900 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:26:33,900 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603521422] [2022-03-15 14:26:33,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:26:33,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:26:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:26:34,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:26:34,116 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:26:34,117 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603521422] [2022-03-15 14:26:34,117 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603521422] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:26:34,117 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129080292] [2022-03-15 14:26:34,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:26:34,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:26:34,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:26:34,132 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) [2022-03-15 14:26:34,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-15 14:26:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:26:34,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-15 14:26:34,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:26:34,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:26:34,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:26:34,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:26:34,895 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129080292] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-15 14:26:34,895 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-15 14:26:34,895 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11, 8] total 22 [2022-03-15 14:26:34,896 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925393671] [2022-03-15 14:26:34,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:26:34,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 14:26:34,896 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:26:34,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 14:26:34,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:26:34,897 INFO L87 Difference]: Start difference. First operand 14070 states and 62027 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:35,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:26:35,231 INFO L93 Difference]: Finished difference Result 21487 states and 94543 transitions. [2022-03-15 14:26:35,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 14:26:35,232 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 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 [2022-03-15 14:26:35,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:26:35,303 INFO L225 Difference]: With dead ends: 21487 [2022-03-15 14:26:35,303 INFO L226 Difference]: Without dead ends: 21079 [2022-03-15 14:26:35,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2022-03-15 14:26:35,304 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 478 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:26:35,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 380 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:26:35,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21079 states. [2022-03-15 14:26:35,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21079 to 14307. [2022-03-15 14:26:35,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14307 states, 14306 states have (on average 4.47134069621138) internal successors, (63967), 14306 states have internal predecessors, (63967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:35,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14307 states to 14307 states and 63967 transitions. [2022-03-15 14:26:35,789 INFO L78 Accepts]: Start accepts. Automaton has 14307 states and 63967 transitions. Word has length 104 [2022-03-15 14:26:35,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:26:35,789 INFO L470 AbstractCegarLoop]: Abstraction has 14307 states and 63967 transitions. [2022-03-15 14:26:35,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:35,790 INFO L276 IsEmpty]: Start isEmpty. Operand 14307 states and 63967 transitions. [2022-03-15 14:26:35,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-03-15 14:26:35,821 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:26:35,821 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:26:35,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-03-15 14:26:36,038 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,SelfDestructingSolverStorable9 [2022-03-15 14:26:36,039 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:26:36,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:26:36,046 INFO L85 PathProgramCache]: Analyzing trace with hash 550875736, now seen corresponding path program 1 times [2022-03-15 14:26:36,047 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:26:36,047 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917551818] [2022-03-15 14:26:36,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:26:36,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:26:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:26:36,202 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:26:36,203 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:26:36,203 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917551818] [2022-03-15 14:26:36,203 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917551818] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:26:36,203 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223770069] [2022-03-15 14:26:36,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:26:36,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:26:36,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:26:36,208 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) [2022-03-15 14:26:36,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-15 14:26:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:26:36,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-15 14:26:36,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:26:36,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:26:36,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:26:36,778 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:26:36,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223770069] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:26:36,778 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:26:36,778 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2022-03-15 14:26:36,778 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258060096] [2022-03-15 14:26:36,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:26:36,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 14:26:36,779 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:26:36,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 14:26:36,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-15 14:26:36,779 INFO L87 Difference]: Start difference. First operand 14307 states and 63967 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:37,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:26:37,173 INFO L93 Difference]: Finished difference Result 35327 states and 155976 transitions. [2022-03-15 14:26:37,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 14:26:37,174 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-03-15 14:26:37,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:26:37,300 INFO L225 Difference]: With dead ends: 35327 [2022-03-15 14:26:37,300 INFO L226 Difference]: Without dead ends: 31967 [2022-03-15 14:26:37,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 209 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-15 14:26:37,301 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 114 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:26:37,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 913 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:26:37,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31967 states. [2022-03-15 14:26:37,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31967 to 19638. [2022-03-15 14:26:37,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19638 states, 19637 states have (on average 4.502979070122728) internal successors, (88425), 19637 states have internal predecessors, (88425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:38,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19638 states to 19638 states and 88425 transitions. [2022-03-15 14:26:38,080 INFO L78 Accepts]: Start accepts. Automaton has 19638 states and 88425 transitions. Word has length 106 [2022-03-15 14:26:38,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:26:38,081 INFO L470 AbstractCegarLoop]: Abstraction has 19638 states and 88425 transitions. [2022-03-15 14:26:38,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:38,081 INFO L276 IsEmpty]: Start isEmpty. Operand 19638 states and 88425 transitions. [2022-03-15 14:26:38,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-03-15 14:26:38,280 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:26:38,280 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:26:38,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-15 14:26:38,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:26:38,516 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:26:38,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:26:38,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1934084240, now seen corresponding path program 2 times [2022-03-15 14:26:38,517 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:26:38,517 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025671697] [2022-03-15 14:26:38,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:26:38,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:26:38,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:26:38,772 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:26:38,772 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:26:38,773 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025671697] [2022-03-15 14:26:38,773 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025671697] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:26:38,774 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897653467] [2022-03-15 14:26:38,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:26:38,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:26:38,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:26:38,775 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) [2022-03-15 14:26:38,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-15 14:26:38,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:26:38,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:26:38,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-15 14:26:38,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:26:39,338 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:26:39,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:26:39,758 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:26:39,759 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897653467] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:26:39,759 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:26:39,759 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26 [2022-03-15 14:26:39,759 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976025078] [2022-03-15 14:26:39,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:26:39,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-15 14:26:39,759 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:26:39,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-15 14:26:39,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2022-03-15 14:26:39,760 INFO L87 Difference]: Start difference. First operand 19638 states and 88425 transitions. Second operand has 26 states, 26 states have (on average 9.923076923076923) internal successors, (258), 26 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:42,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:26:42,316 INFO L93 Difference]: Finished difference Result 80366 states and 358545 transitions. [2022-03-15 14:26:42,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-15 14:26:42,316 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.923076923076923) internal successors, (258), 26 states have internal predecessors, (258), 0 states have call successors, (0), 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 108 [2022-03-15 14:26:42,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:26:42,886 INFO L225 Difference]: With dead ends: 80366 [2022-03-15 14:26:42,886 INFO L226 Difference]: Without dead ends: 74822 [2022-03-15 14:26:42,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2108 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1297, Invalid=5345, Unknown=0, NotChecked=0, Total=6642 [2022-03-15 14:26:42,888 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 2024 mSDsluCounter, 2835 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2024 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:26:42,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2024 Valid, 2651 Invalid, 1437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:26:42,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74822 states. [2022-03-15 14:26:44,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74822 to 37534. [2022-03-15 14:26:44,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37534 states, 37533 states have (on average 4.614419311006315) internal successors, (173193), 37533 states have internal predecessors, (173193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:44,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37534 states to 37534 states and 173193 transitions. [2022-03-15 14:26:44,789 INFO L78 Accepts]: Start accepts. Automaton has 37534 states and 173193 transitions. Word has length 108 [2022-03-15 14:26:44,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:26:44,791 INFO L470 AbstractCegarLoop]: Abstraction has 37534 states and 173193 transitions. [2022-03-15 14:26:44,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.923076923076923) internal successors, (258), 26 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:44,791 INFO L276 IsEmpty]: Start isEmpty. Operand 37534 states and 173193 transitions. [2022-03-15 14:26:44,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-03-15 14:26:44,906 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:26:44,906 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:26:44,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-15 14:26:45,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:26:45,124 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:26:45,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:26:45,124 INFO L85 PathProgramCache]: Analyzing trace with hash 376595020, now seen corresponding path program 3 times [2022-03-15 14:26:45,124 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:26:45,125 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763381141] [2022-03-15 14:26:45,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:26:45,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:26:45,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:26:45,277 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:26:45,277 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:26:45,277 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763381141] [2022-03-15 14:26:45,277 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763381141] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:26:45,278 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962880536] [2022-03-15 14:26:45,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:26:45,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:26:45,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:26:45,279 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) [2022-03-15 14:26:45,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-15 14:26:45,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 14:26:45,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:26:45,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-15 14:26:45,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:26:45,969 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:26:45,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:26:46,292 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:26:46,292 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962880536] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:26:46,292 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:26:46,292 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2022-03-15 14:26:46,292 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667819026] [2022-03-15 14:26:46,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:26:46,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-15 14:26:46,293 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:26:46,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-15 14:26:46,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2022-03-15 14:26:46,294 INFO L87 Difference]: Start difference. First operand 37534 states and 173193 transitions. Second operand has 24 states, 24 states have (on average 10.708333333333334) internal successors, (257), 24 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:48,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:26:48,562 INFO L93 Difference]: Finished difference Result 156580 states and 714820 transitions. [2022-03-15 14:26:48,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 14:26:48,562 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 10.708333333333334) internal successors, (257), 24 states have internal predecessors, (257), 0 states have call successors, (0), 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 108 [2022-03-15 14:26:48,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:26:49,769 INFO L225 Difference]: With dead ends: 156580 [2022-03-15 14:26:49,769 INFO L226 Difference]: Without dead ends: 153226 [2022-03-15 14:26:49,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 201 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=387, Invalid=1419, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 14:26:49,771 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 1621 mSDsluCounter, 1943 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 1837 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:26:49,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1621 Valid, 1837 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:26:50,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153226 states. [2022-03-15 14:26:53,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153226 to 45743. [2022-03-15 14:26:53,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45743 states, 45742 states have (on average 4.758034191771238) internal successors, (217642), 45742 states have internal predecessors, (217642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:53,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45743 states to 45743 states and 217642 transitions. [2022-03-15 14:26:53,382 INFO L78 Accepts]: Start accepts. Automaton has 45743 states and 217642 transitions. Word has length 108 [2022-03-15 14:26:53,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:26:53,383 INFO L470 AbstractCegarLoop]: Abstraction has 45743 states and 217642 transitions. [2022-03-15 14:26:53,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.708333333333334) internal successors, (257), 24 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:26:53,383 INFO L276 IsEmpty]: Start isEmpty. Operand 45743 states and 217642 transitions. [2022-03-15 14:26:53,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-03-15 14:26:53,880 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:26:53,880 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:26:53,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-15 14:26:54,100 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,SelfDestructingSolverStorable12 [2022-03-15 14:26:54,101 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:26:54,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:26:54,101 INFO L85 PathProgramCache]: Analyzing trace with hash 969736390, now seen corresponding path program 4 times [2022-03-15 14:26:54,101 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:26:54,101 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132330064] [2022-03-15 14:26:54,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:26:54,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:26:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:26:54,251 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:26:54,251 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:26:54,251 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132330064] [2022-03-15 14:26:54,251 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132330064] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:26:54,251 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489389550] [2022-03-15 14:26:54,251 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:26:54,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:26:54,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:26:54,256 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) [2022-03-15 14:26:54,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-15 14:26:54,334 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:26:54,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:26:54,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-15 14:26:54,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:26:54,850 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:26:54,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:26:55,178 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:26:55,178 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489389550] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:26:55,178 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:26:55,178 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2022-03-15 14:26:55,179 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36773646] [2022-03-15 14:26:55,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:26:55,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-15 14:26:55,179 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:26:55,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-15 14:26:55,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2022-03-15 14:26:55,180 INFO L87 Difference]: Start difference. First operand 45743 states and 217642 transitions. Second operand has 25 states, 25 states have (on average 10.92) internal successors, (273), 25 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:00,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:27:00,805 INFO L93 Difference]: Finished difference Result 275274 states and 1261761 transitions. [2022-03-15 14:27:00,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-03-15 14:27:00,806 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.92) internal successors, (273), 25 states have internal predecessors, (273), 0 states have call successors, (0), 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 108 [2022-03-15 14:27:00,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:27:03,668 INFO L225 Difference]: With dead ends: 275274 [2022-03-15 14:27:03,668 INFO L226 Difference]: Without dead ends: 271953 [2022-03-15 14:27:03,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4157 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2070, Invalid=9272, Unknown=0, NotChecked=0, Total=11342 [2022-03-15 14:27:03,670 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 2780 mSDsluCounter, 2957 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2780 SdHoareTripleChecker+Valid, 2764 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:27:03,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2780 Valid, 2764 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:27:04,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271953 states. [2022-03-15 14:27:09,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271953 to 73322. [2022-03-15 14:27:10,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73322 states, 73321 states have (on average 4.882693907611735) internal successors, (358004), 73321 states have internal predecessors, (358004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:10,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73322 states to 73322 states and 358004 transitions. [2022-03-15 14:27:10,775 INFO L78 Accepts]: Start accepts. Automaton has 73322 states and 358004 transitions. Word has length 108 [2022-03-15 14:27:10,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:27:10,775 INFO L470 AbstractCegarLoop]: Abstraction has 73322 states and 358004 transitions. [2022-03-15 14:27:10,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.92) internal successors, (273), 25 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:10,775 INFO L276 IsEmpty]: Start isEmpty. Operand 73322 states and 358004 transitions. [2022-03-15 14:27:11,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-03-15 14:27:11,040 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:27:11,040 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:27:11,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-03-15 14:27:11,247 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,SelfDestructingSolverStorable13 [2022-03-15 14:27:11,248 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:27:11,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:27:11,248 INFO L85 PathProgramCache]: Analyzing trace with hash -879637440, now seen corresponding path program 5 times [2022-03-15 14:27:11,248 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:27:11,248 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678104400] [2022-03-15 14:27:11,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:27:11,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:27:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:27:11,444 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:27:11,444 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:27:11,444 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678104400] [2022-03-15 14:27:11,445 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678104400] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:27:11,445 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164590069] [2022-03-15 14:27:11,445 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:27:11,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:27:11,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:27:11,446 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) [2022-03-15 14:27:11,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-15 14:27:11,530 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-15 14:27:11,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:27:11,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-15 14:27:11,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:27:12,052 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:27:12,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:27:12,372 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:27:12,372 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164590069] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:27:12,372 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:27:12,372 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 26 [2022-03-15 14:27:12,373 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53767392] [2022-03-15 14:27:12,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:27:12,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-15 14:27:12,373 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:27:12,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-15 14:27:12,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=500, Unknown=0, NotChecked=0, Total=650 [2022-03-15 14:27:12,374 INFO L87 Difference]: Start difference. First operand 73322 states and 358004 transitions. Second operand has 26 states, 26 states have (on average 9.692307692307692) internal successors, (252), 26 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:14,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:27:14,132 INFO L93 Difference]: Finished difference Result 112589 states and 538284 transitions. [2022-03-15 14:27:14,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 14:27:14,132 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.692307692307692) internal successors, (252), 26 states have internal predecessors, (252), 0 states have call successors, (0), 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 108 [2022-03-15 14:27:14,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:27:15,114 INFO L225 Difference]: With dead ends: 112589 [2022-03-15 14:27:15,114 INFO L226 Difference]: Without dead ends: 111101 [2022-03-15 14:27:15,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 201 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=384, Invalid=1256, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 14:27:15,117 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 918 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:27:15,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [918 Valid, 1406 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:27:15,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111101 states. [2022-03-15 14:27:17,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111101 to 77152. [2022-03-15 14:27:17,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77152 states, 77151 states have (on average 4.9084652175603685) internal successors, (378693), 77151 states have internal predecessors, (378693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:18,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77152 states to 77152 states and 378693 transitions. [2022-03-15 14:27:18,638 INFO L78 Accepts]: Start accepts. Automaton has 77152 states and 378693 transitions. Word has length 108 [2022-03-15 14:27:18,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:27:18,639 INFO L470 AbstractCegarLoop]: Abstraction has 77152 states and 378693 transitions. [2022-03-15 14:27:18,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.692307692307692) internal successors, (252), 26 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:18,639 INFO L276 IsEmpty]: Start isEmpty. Operand 77152 states and 378693 transitions. [2022-03-15 14:27:18,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-03-15 14:27:18,894 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:27:18,894 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:27:18,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-03-15 14:27:19,112 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,SelfDestructingSolverStorable14 [2022-03-15 14:27:19,112 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:27:19,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:27:19,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1499822858, now seen corresponding path program 6 times [2022-03-15 14:27:19,112 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:27:19,112 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480943221] [2022-03-15 14:27:19,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:27:19,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:27:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:27:19,249 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:27:19,250 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:27:19,250 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480943221] [2022-03-15 14:27:19,250 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480943221] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:27:19,250 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323725811] [2022-03-15 14:27:19,250 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:27:19,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:27:19,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:27:19,251 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) [2022-03-15 14:27:19,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-15 14:27:19,345 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 14:27:19,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:27:19,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-15 14:27:19,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:27:20,194 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:27:20,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:27:20,584 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:27:20,584 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323725811] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:27:20,584 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:27:20,584 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2022-03-15 14:27:20,584 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061251020] [2022-03-15 14:27:20,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:27:20,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-15 14:27:20,585 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:27:20,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-15 14:27:20,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2022-03-15 14:27:20,585 INFO L87 Difference]: Start difference. First operand 77152 states and 378693 transitions. Second operand has 25 states, 25 states have (on average 10.32) internal successors, (258), 25 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:25,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:27:25,008 INFO L93 Difference]: Finished difference Result 216577 states and 1006951 transitions. [2022-03-15 14:27:25,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-03-15 14:27:25,008 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.32) internal successors, (258), 25 states have internal predecessors, (258), 0 states have call successors, (0), 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 108 [2022-03-15 14:27:25,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:27:26,558 INFO L225 Difference]: With dead ends: 216577 [2022-03-15 14:27:26,558 INFO L226 Difference]: Without dead ends: 207214 [2022-03-15 14:27:26,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2507 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1557, Invalid=6099, Unknown=0, NotChecked=0, Total=7656 [2022-03-15 14:27:26,564 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 2116 mSDsluCounter, 2345 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2116 SdHoareTripleChecker+Valid, 2214 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:27:26,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2116 Valid, 2214 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:27:27,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207214 states. [2022-03-15 14:27:31,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207214 to 83054. [2022-03-15 14:27:31,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83054 states, 83053 states have (on average 4.931525652294318) internal successors, (409578), 83053 states have internal predecessors, (409578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:31,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83054 states to 83054 states and 409578 transitions. [2022-03-15 14:27:31,984 INFO L78 Accepts]: Start accepts. Automaton has 83054 states and 409578 transitions. Word has length 108 [2022-03-15 14:27:31,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:27:31,985 INFO L470 AbstractCegarLoop]: Abstraction has 83054 states and 409578 transitions. [2022-03-15 14:27:31,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.32) internal successors, (258), 25 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:31,985 INFO L276 IsEmpty]: Start isEmpty. Operand 83054 states and 409578 transitions. [2022-03-15 14:27:32,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-03-15 14:27:32,222 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:27:32,222 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:27:32,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-15 14:27:32,438 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,SelfDestructingSolverStorable15 [2022-03-15 14:27:32,439 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:27:32,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:27:32,439 INFO L85 PathProgramCache]: Analyzing trace with hash 2088288796, now seen corresponding path program 7 times [2022-03-15 14:27:32,439 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:27:32,439 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281532744] [2022-03-15 14:27:32,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:27:32,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:27:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:27:32,915 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:27:32,915 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:27:32,915 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281532744] [2022-03-15 14:27:32,915 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281532744] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:27:32,915 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422101516] [2022-03-15 14:27:32,915 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:27:32,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:27:32,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:27:32,936 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) [2022-03-15 14:27:32,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-15 14:27:33,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:27:33,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-15 14:27:33,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:27:33,355 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:27:33,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:27:33,575 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:27:33,575 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422101516] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:27:33,575 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:27:33,575 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2022-03-15 14:27:33,576 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933205620] [2022-03-15 14:27:33,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:27:33,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-15 14:27:33,576 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:27:33,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-15 14:27:33,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2022-03-15 14:27:33,577 INFO L87 Difference]: Start difference. First operand 83054 states and 409578 transitions. Second operand has 24 states, 24 states have (on average 10.25) internal successors, (246), 24 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:36,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:27:36,403 INFO L93 Difference]: Finished difference Result 214439 states and 1010964 transitions. [2022-03-15 14:27:36,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-15 14:27:36,403 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 10.25) internal successors, (246), 24 states have internal predecessors, (246), 0 states have call successors, (0), 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 108 [2022-03-15 14:27:36,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:27:38,079 INFO L225 Difference]: With dead ends: 214439 [2022-03-15 14:27:38,080 INFO L226 Difference]: Without dead ends: 212723 [2022-03-15 14:27:38,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 201 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=328, Invalid=1078, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 14:27:38,080 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 1082 mSDsluCounter, 2376 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 2194 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:27:38,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1082 Valid, 2194 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:27:38,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212723 states. [2022-03-15 14:27:43,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212723 to 105281. [2022-03-15 14:27:43,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105281 states, 105280 states have (on average 5.043522036474164) internal successors, (530982), 105280 states have internal predecessors, (530982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:44,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105281 states to 105281 states and 530982 transitions. [2022-03-15 14:27:44,857 INFO L78 Accepts]: Start accepts. Automaton has 105281 states and 530982 transitions. Word has length 108 [2022-03-15 14:27:44,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:27:44,857 INFO L470 AbstractCegarLoop]: Abstraction has 105281 states and 530982 transitions. [2022-03-15 14:27:44,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.25) internal successors, (246), 24 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:44,858 INFO L276 IsEmpty]: Start isEmpty. Operand 105281 states and 530982 transitions. [2022-03-15 14:27:45,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-03-15 14:27:45,212 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:27:45,212 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:27:45,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-15 14:27:45,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-15 14:27:45,421 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:27:45,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:27:45,421 INFO L85 PathProgramCache]: Analyzing trace with hash 876915878, now seen corresponding path program 8 times [2022-03-15 14:27:45,421 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:27:45,421 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490627727] [2022-03-15 14:27:45,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:27:45,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:27:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:27:45,642 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:27:45,642 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:27:45,642 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490627727] [2022-03-15 14:27:45,642 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490627727] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:27:45,642 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376951686] [2022-03-15 14:27:45,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:27:45,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:27:45,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:27:45,644 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) [2022-03-15 14:27:45,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-15 14:27:45,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:27:45,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:27:45,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-15 14:27:45,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:27:46,156 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:27:46,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:27:46,667 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:27:46,667 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376951686] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:27:46,667 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:27:46,667 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2022-03-15 14:27:46,667 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482540726] [2022-03-15 14:27:46,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:27:46,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-15 14:27:46,668 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:27:46,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-15 14:27:46,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-03-15 14:27:46,668 INFO L87 Difference]: Start difference. First operand 105281 states and 530982 transitions. Second operand has 24 states, 24 states have (on average 10.833333333333334) internal successors, (260), 24 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:48,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:27:48,728 INFO L93 Difference]: Finished difference Result 144692 states and 698258 transitions. [2022-03-15 14:27:48,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-15 14:27:48,729 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 10.833333333333334) internal successors, (260), 24 states have internal predecessors, (260), 0 states have call successors, (0), 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 108 [2022-03-15 14:27:48,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:27:49,849 INFO L225 Difference]: With dead ends: 144692 [2022-03-15 14:27:49,858 INFO L226 Difference]: Without dead ends: 138254 [2022-03-15 14:27:49,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 201 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=473, Invalid=1689, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 14:27:49,859 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 1502 mSDsluCounter, 2109 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1997 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:27:49,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1502 Valid, 1997 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:27:50,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138254 states. [2022-03-15 14:27:53,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138254 to 108215. [2022-03-15 14:27:53,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108215 states, 108214 states have (on average 5.008104311826566) internal successors, (541947), 108214 states have internal predecessors, (541947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:54,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108215 states to 108215 states and 541947 transitions. [2022-03-15 14:27:54,546 INFO L78 Accepts]: Start accepts. Automaton has 108215 states and 541947 transitions. Word has length 108 [2022-03-15 14:27:54,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:27:54,546 INFO L470 AbstractCegarLoop]: Abstraction has 108215 states and 541947 transitions. [2022-03-15 14:27:54,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.833333333333334) internal successors, (260), 24 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:54,546 INFO L276 IsEmpty]: Start isEmpty. Operand 108215 states and 541947 transitions. [2022-03-15 14:27:55,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-03-15 14:27:55,466 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:27:55,466 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:27:55,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-03-15 14:27:55,682 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,SelfDestructingSolverStorable17 [2022-03-15 14:27:55,683 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:27:55,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:27:55,683 INFO L85 PathProgramCache]: Analyzing trace with hash -52608514, now seen corresponding path program 9 times [2022-03-15 14:27:55,683 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:27:55,683 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107104227] [2022-03-15 14:27:55,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:27:55,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:27:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:27:55,896 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:27:55,896 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:27:55,896 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107104227] [2022-03-15 14:27:55,896 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107104227] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:27:55,896 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52830334] [2022-03-15 14:27:55,896 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:27:55,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:27:55,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:27:55,897 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) [2022-03-15 14:27:55,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-15 14:27:56,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 14:27:56,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:27:56,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-15 14:27:56,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:27:56,542 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 14:27:56,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:27:56,884 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 14:27:56,885 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52830334] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:27:56,885 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:27:56,885 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26 [2022-03-15 14:27:56,885 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400711498] [2022-03-15 14:27:56,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:27:56,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-15 14:27:56,886 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:27:56,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-15 14:27:56,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2022-03-15 14:27:56,887 INFO L87 Difference]: Start difference. First operand 108215 states and 541947 transitions. Second operand has 26 states, 26 states have (on average 10.423076923076923) internal successors, (271), 26 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:28:04,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:28:04,504 INFO L93 Difference]: Finished difference Result 367668 states and 1758693 transitions. [2022-03-15 14:28:04,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-03-15 14:28:04,504 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 10.423076923076923) internal successors, (271), 26 states have internal predecessors, (271), 0 states have call successors, (0), 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 110 [2022-03-15 14:28:04,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:28:07,500 INFO L225 Difference]: With dead ends: 367668 [2022-03-15 14:28:07,501 INFO L226 Difference]: Without dead ends: 349446 [2022-03-15 14:28:07,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5525 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2177, Invalid=13075, Unknown=0, NotChecked=0, Total=15252 [2022-03-15 14:28:07,504 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 2123 mSDsluCounter, 5553 mSDsCounter, 0 mSdLazyCounter, 2789 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2123 SdHoareTripleChecker+Valid, 5103 SdHoareTripleChecker+Invalid, 2972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 2789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:28:07,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2123 Valid, 5103 Invalid, 2972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 2789 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 14:28:08,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349446 states. [2022-03-15 14:28:17,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349446 to 150479. [2022-03-15 14:28:17,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150479 states, 150478 states have (on average 5.107264849346748) internal successors, (768531), 150478 states have internal predecessors, (768531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:28:18,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150479 states to 150479 states and 768531 transitions. [2022-03-15 14:28:18,906 INFO L78 Accepts]: Start accepts. Automaton has 150479 states and 768531 transitions. Word has length 110 [2022-03-15 14:28:18,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:28:18,906 INFO L470 AbstractCegarLoop]: Abstraction has 150479 states and 768531 transitions. [2022-03-15 14:28:18,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.423076923076923) internal successors, (271), 26 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:28:18,906 INFO L276 IsEmpty]: Start isEmpty. Operand 150479 states and 768531 transitions. [2022-03-15 14:28:19,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-03-15 14:28:19,463 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:28:19,463 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:28:19,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-15 14:28:19,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:28:19,679 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:28:19,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:28:19,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1134872982, now seen corresponding path program 10 times [2022-03-15 14:28:19,679 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:28:19,680 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137774288] [2022-03-15 14:28:19,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:28:19,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:28:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:28:19,867 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-15 14:28:19,867 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:28:19,867 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137774288] [2022-03-15 14:28:19,867 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137774288] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:28:19,868 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704637767] [2022-03-15 14:28:19,868 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:28:19,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:28:19,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:28:19,869 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:28:19,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-15 14:28:19,963 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:28:19,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:28:19,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 14:28:19,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:28:20,170 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:28:20,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:28:20,329 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:28:20,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704637767] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:28:20,329 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:28:20,329 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 6] total 16 [2022-03-15 14:28:20,330 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586003838] [2022-03-15 14:28:20,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:28:20,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 14:28:20,330 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:28:20,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 14:28:20,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-03-15 14:28:20,331 INFO L87 Difference]: Start difference. First operand 150479 states and 768531 transitions. Second operand has 16 states, 16 states have (on average 11.8125) internal successors, (189), 16 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:28:26,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:28:26,179 INFO L93 Difference]: Finished difference Result 354943 states and 1772034 transitions. [2022-03-15 14:28:26,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-15 14:28:26,179 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.8125) internal successors, (189), 16 states have internal predecessors, (189), 0 states have call successors, (0), 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 112 [2022-03-15 14:28:26,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:28:30,054 INFO L225 Difference]: With dead ends: 354943 [2022-03-15 14:28:30,055 INFO L226 Difference]: Without dead ends: 350611 [2022-03-15 14:28:30,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=343, Invalid=1297, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 14:28:30,055 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 1290 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1290 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:28:30,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1290 Valid, 1381 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:28:31,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350611 states. [2022-03-15 14:28:44,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350611 to 316132. [2022-03-15 14:28:46,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316132 states, 316131 states have (on average 5.098636324814713) internal successors, (1611837), 316131 states have internal predecessors, (1611837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:28:50,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316132 states to 316132 states and 1611837 transitions. [2022-03-15 14:28:50,358 INFO L78 Accepts]: Start accepts. Automaton has 316132 states and 1611837 transitions. Word has length 112 [2022-03-15 14:28:50,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:28:50,359 INFO L470 AbstractCegarLoop]: Abstraction has 316132 states and 1611837 transitions. [2022-03-15 14:28:50,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.8125) internal successors, (189), 16 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:28:50,359 INFO L276 IsEmpty]: Start isEmpty. Operand 316132 states and 1611837 transitions. [2022-03-15 14:28:51,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-03-15 14:28:51,982 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:28:51,982 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:28:51,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-15 14:28:52,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:28:52,199 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 14:28:52,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:28:52,199 INFO L85 PathProgramCache]: Analyzing trace with hash 644652868, now seen corresponding path program 11 times [2022-03-15 14:28:52,199 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:28:52,199 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530335529] [2022-03-15 14:28:52,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:28:52,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:28:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:28:52,396 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:28:52,396 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:28:52,396 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530335529] [2022-03-15 14:28:52,396 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530335529] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:28:52,397 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208489873] [2022-03-15 14:28:52,397 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:28:52,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:28:52,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:28:52,408 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:28:52,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-15 14:28:52,513 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 14:28:52,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:28:52,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 14:28:52,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:28:52,998 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 14:28:52,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:28:53,333 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 14:28:53,333 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208489873] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:28:53,333 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:28:53,333 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 32 [2022-03-15 14:28:53,333 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831940618] [2022-03-15 14:28:53,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:28:53,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 14:28:53,334 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:28:53,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 14:28:53,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2022-03-15 14:28:53,336 INFO L87 Difference]: Start difference. First operand 316132 states and 1611837 transitions. Second operand has 32 states, 32 states have (on average 8.8125) internal successors, (282), 32 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:16,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:29:16,089 INFO L93 Difference]: Finished difference Result 1231060 states and 5948856 transitions. [2022-03-15 14:29:16,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-03-15 14:29:16,089 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.8125) internal successors, (282), 32 states have internal predecessors, (282), 0 states have call successors, (0), 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 112 [2022-03-15 14:29:16,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:29:36,851 INFO L225 Difference]: With dead ends: 1231060 [2022-03-15 14:29:36,851 INFO L226 Difference]: Without dead ends: 1217095 [2022-03-15 14:29:36,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11002 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4452, Invalid=21308, Unknown=0, NotChecked=0, Total=25760 [2022-03-15 14:29:36,854 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 6617 mSDsluCounter, 3965 mSDsCounter, 0 mSdLazyCounter, 1593 mSolverCounterSat, 688 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6617 SdHoareTripleChecker+Valid, 3637 SdHoareTripleChecker+Invalid, 2281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 688 IncrementalHoareTripleChecker+Valid, 1593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:29:36,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6617 Valid, 3637 Invalid, 2281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [688 Valid, 1593 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 14:29:39,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217095 states.