/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/test-context1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 14:37:51,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 14:37:51,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 14:37:51,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-15 14:37:51,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 14:37:51,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 14:37:51,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 14:37:51,435 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 14:37:51,467 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 14:37:51,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 14:37:51,467 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-15 14:37:51,467 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-15 14:37:51,468 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 14:37:51,468 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 14:37:51,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 14:37:51,469 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 14:37:51,469 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 14:37:51,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 14:37:51,470 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 14:37:51,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 14:37:51,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 14:37:51,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 14:37:51,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 14:37:51,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 14:37:51,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 14:37:51,471 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 14:37:51,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 14:37:51,471 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 14:37:51,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 14:37:51,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 14:37:51,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 14:37:51,471 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 14:37:51,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 14:37:51,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 14:37:51,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 14:37:51,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-15 14:37:51,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 14:37:51,472 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 14:37:51,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 14:37:51,474 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-15 14:37:51,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 14:37:51,474 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 14:37:51,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 14:37:51,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 14:37:51,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 14:37:51,686 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 14:37:51,687 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 14:37:51,687 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-context1.wvr.c [2022-03-15 14:37:51,737 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f21f19f8/adadf183b42a49faa1a10fff993dbe97/FLAG91a396697 [2022-03-15 14:37:52,147 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 14:37:52,147 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-context1.wvr.c [2022-03-15 14:37:52,156 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f21f19f8/adadf183b42a49faa1a10fff993dbe97/FLAG91a396697 [2022-03-15 14:37:52,173 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f21f19f8/adadf183b42a49faa1a10fff993dbe97 [2022-03-15 14:37:52,175 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 14:37:52,178 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 14:37:52,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 14:37:52,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 14:37:52,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 14:37:52,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 02:37:52" (1/1) ... [2022-03-15 14:37:52,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59df074e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:37:52, skipping insertion in model container [2022-03-15 14:37:52,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 02:37:52" (1/1) ... [2022-03-15 14:37:52,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 14:37:52,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 14:37:52,425 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-context1.wvr.c[2433,2446] [2022-03-15 14:37:52,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 14:37:52,443 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 14:37:52,475 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-context1.wvr.c[2433,2446] [2022-03-15 14:37:52,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 14:37:52,492 INFO L208 MainTranslator]: Completed translation [2022-03-15 14:37:52,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:37:52 WrapperNode [2022-03-15 14:37:52,492 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 14:37:52,494 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 14:37:52,494 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 14:37:52,494 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 14:37:52,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:37:52" (1/1) ... [2022-03-15 14:37:52,514 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:37:52" (1/1) ... [2022-03-15 14:37:52,542 INFO L137 Inliner]: procedures = 24, calls = 34, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 131 [2022-03-15 14:37:52,542 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 14:37:52,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 14:37:52,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 14:37:52,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 14:37:52,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:37:52" (1/1) ... [2022-03-15 14:37:52,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:37:52" (1/1) ... [2022-03-15 14:37:52,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:37:52" (1/1) ... [2022-03-15 14:37:52,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:37:52" (1/1) ... [2022-03-15 14:37:52,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:37:52" (1/1) ... [2022-03-15 14:37:52,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:37:52" (1/1) ... [2022-03-15 14:37:52,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:37:52" (1/1) ... [2022-03-15 14:37:52,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 14:37:52,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 14:37:52,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 14:37:52,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 14:37:52,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:37:52" (1/1) ... [2022-03-15 14:37:52,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 14:37:52,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:37:52,612 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 14:37:52,624 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 14:37:52,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 14:37:52,647 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 14:37:52,647 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 14:37:52,647 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 14:37:52,647 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 14:37:52,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 14:37:52,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 14:37:52,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 14:37:52,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-15 14:37:52,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-15 14:37:52,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-15 14:37:52,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 14:37:52,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 14:37:52,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-15 14:37:52,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 14:37:52,650 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 14:37:52,713 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 14:37:52,714 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 14:37:52,893 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 14:37:53,035 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 14:37:53,036 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-15 14:37:53,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 02:37:53 BoogieIcfgContainer [2022-03-15 14:37:53,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 14:37:53,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 14:37:53,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 14:37:53,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 14:37:53,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 02:37:52" (1/3) ... [2022-03-15 14:37:53,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760033c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 02:37:53, skipping insertion in model container [2022-03-15 14:37:53,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:37:52" (2/3) ... [2022-03-15 14:37:53,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760033c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 02:37:53, skipping insertion in model container [2022-03-15 14:37:53,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 02:37:53" (3/3) ... [2022-03-15 14:37:53,043 INFO L111 eAbstractionObserver]: Analyzing ICFG test-context1.wvr.c [2022-03-15 14:37:53,047 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 14:37:53,047 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-15 14:37:53,047 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 14:37:53,047 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 14:37:53,074 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,075 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,075 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,075 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,076 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,076 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,076 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,076 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,076 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,076 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,077 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,077 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,077 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,077 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,077 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,077 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,078 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,078 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,078 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,078 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,079 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,079 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,080 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,080 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,080 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,080 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,080 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,080 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,081 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,081 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,081 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,081 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,081 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,082 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,082 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,082 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,082 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,082 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,083 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,083 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,083 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,083 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,086 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,086 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,086 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,087 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,087 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,087 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,087 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,088 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,088 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,088 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,088 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,088 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,089 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,089 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,089 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:37:53,092 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-15 14:37:53,124 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 14:37:53,130 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 14:37:53,130 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-15 14:37:53,139 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 114 places, 116 transitions, 248 flow [2022-03-15 14:37:53,201 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 331 states, 330 states have (on average 2.4454545454545453) internal successors, (807), 330 states have internal predecessors, (807), 0 states have call successors, (0), 0 states 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 14:37:53,211 INFO L276 IsEmpty]: Start isEmpty. Operand has 331 states, 330 states have (on average 2.4454545454545453) internal successors, (807), 330 states have internal predecessors, (807), 0 states have call successors, (0), 0 states 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 14:37:53,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-03-15 14:37:53,231 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:37:53,232 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] [2022-03-15 14:37:53,232 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:37:53,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:37:53,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1680176795, now seen corresponding path program 1 times [2022-03-15 14:37:53,248 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:37:53,248 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035510340] [2022-03-15 14:37:53,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:37:53,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:37:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:37:53,468 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 14:37:53,469 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:37:53,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035510340] [2022-03-15 14:37:53,470 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035510340] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:37:53,470 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:37:53,471 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 14:37:53,472 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492957366] [2022-03-15 14:37:53,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:37:53,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-15 14:37:53,477 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:37:53,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-15 14:37:53,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-15 14:37:53,506 INFO L87 Difference]: Start difference. First operand has 331 states, 330 states have (on average 2.4454545454545453) internal successors, (807), 330 states have internal predecessors, (807), 0 states have call successors, (0), 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 40.5) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 14:37:53,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:37:53,563 INFO L93 Difference]: Finished difference Result 331 states and 738 transitions. [2022-03-15 14:37:53,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-15 14:37:53,567 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-03-15 14:37:53,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:37:53,584 INFO L225 Difference]: With dead ends: 331 [2022-03-15 14:37:53,584 INFO L226 Difference]: Without dead ends: 328 [2022-03-15 14:37:53,586 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 14:37:53,592 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:37:53,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:37:53,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-03-15 14:37:53,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2022-03-15 14:37:53,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 2.2477064220183487) internal successors, (735), 327 states have internal predecessors, (735), 0 states have call successors, (0), 0 states 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 14:37:53,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 735 transitions. [2022-03-15 14:37:53,664 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 735 transitions. Word has length 81 [2022-03-15 14:37:53,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:37:53,664 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 735 transitions. [2022-03-15 14:37:53,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 14:37:53,665 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 735 transitions. [2022-03-15 14:37:53,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-03-15 14:37:53,670 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:37:53,670 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:37:53,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 14:37:53,671 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:37:53,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:37:53,673 INFO L85 PathProgramCache]: Analyzing trace with hash -415887122, now seen corresponding path program 1 times [2022-03-15 14:37:53,673 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:37:53,674 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015888792] [2022-03-15 14:37:53,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:37:53,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:37:53,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:37:53,865 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 14:37:53,865 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:37:53,865 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015888792] [2022-03-15 14:37:53,865 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015888792] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:37:53,866 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:37:53,866 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 14:37:53,866 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000578741] [2022-03-15 14:37:53,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:37:53,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 14:37:53,867 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:37:53,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 14:37:53,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:37:53,868 INFO L87 Difference]: Start difference. First operand 328 states and 735 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 14:37:53,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:37:53,942 INFO L93 Difference]: Finished difference Result 551 states and 1322 transitions. [2022-03-15 14:37:53,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 14:37:53,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-03-15 14:37:53,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:37:53,946 INFO L225 Difference]: With dead ends: 551 [2022-03-15 14:37:53,947 INFO L226 Difference]: Without dead ends: 421 [2022-03-15 14:37:53,947 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 14:37:53,948 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 16 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:37:53,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 294 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:37:53,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-03-15 14:37:53,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 359. [2022-03-15 14:37:53,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 2.2849162011173183) internal successors, (818), 358 states have internal predecessors, (818), 0 states have call successors, (0), 0 states 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 14:37:53,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 818 transitions. [2022-03-15 14:37:53,967 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 818 transitions. Word has length 83 [2022-03-15 14:37:53,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:37:53,969 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 818 transitions. [2022-03-15 14:37:53,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 14:37:53,969 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 818 transitions. [2022-03-15 14:37:53,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-03-15 14:37:53,971 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:37:53,971 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] [2022-03-15 14:37:53,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 14:37:53,972 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:37:53,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:37:53,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1146128612, now seen corresponding path program 1 times [2022-03-15 14:37:53,972 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:37:53,973 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796590848] [2022-03-15 14:37:53,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:37:53,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:37:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:37:54,081 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 14:37:54,082 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:37:54,082 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796590848] [2022-03-15 14:37:54,082 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796590848] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:37:54,082 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:37:54,082 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 14:37:54,082 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019462331] [2022-03-15 14:37:54,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:37:54,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 14:37:54,083 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:37:54,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 14:37:54,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 14:37:54,084 INFO L87 Difference]: Start difference. First operand 359 states and 818 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 14:37:54,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:37:54,111 INFO L93 Difference]: Finished difference Result 494 states and 1120 transitions. [2022-03-15 14:37:54,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 14:37:54,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2022-03-15 14:37:54,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:37:54,114 INFO L225 Difference]: With dead ends: 494 [2022-03-15 14:37:54,114 INFO L226 Difference]: Without dead ends: 413 [2022-03-15 14:37:54,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 14:37:54,115 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 15 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:37:54,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 131 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:37:54,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-03-15 14:37:54,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2022-03-15 14:37:54,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 2.283980582524272) internal successors, (941), 412 states have internal predecessors, (941), 0 states have call successors, (0), 0 states 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 14:37:54,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 941 transitions. [2022-03-15 14:37:54,126 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 941 transitions. Word has length 86 [2022-03-15 14:37:54,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:37:54,127 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 941 transitions. [2022-03-15 14:37:54,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 14:37:54,128 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 941 transitions. [2022-03-15 14:37:54,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-03-15 14:37:54,129 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:37:54,129 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] [2022-03-15 14:37:54,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 14:37:54,130 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:37:54,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:37:54,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1766674574, now seen corresponding path program 1 times [2022-03-15 14:37:54,130 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:37:54,131 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470471547] [2022-03-15 14:37:54,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:37:54,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:37:54,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:37:54,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:37:54,285 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:37:54,286 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470471547] [2022-03-15 14:37:54,286 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470471547] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:37:54,286 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:37:54,286 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 14:37:54,286 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160276655] [2022-03-15 14:37:54,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:37:54,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 14:37:54,287 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:37:54,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 14:37:54,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-03-15 14:37:54,288 INFO L87 Difference]: Start difference. First operand 413 states and 941 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:37:54,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:37:54,393 INFO L93 Difference]: Finished difference Result 544 states and 1228 transitions. [2022-03-15 14:37:54,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 14:37:54,394 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2022-03-15 14:37:54,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:37:54,397 INFO L225 Difference]: With dead ends: 544 [2022-03-15 14:37:54,397 INFO L226 Difference]: Without dead ends: 481 [2022-03-15 14:37:54,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-03-15 14:37:54,399 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 234 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:37:54,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 293 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:37:54,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-03-15 14:37:54,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 414. [2022-03-15 14:37:54,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 2.280871670702179) internal successors, (942), 413 states have internal predecessors, (942), 0 states have call successors, (0), 0 states 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 14:37:54,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 942 transitions. [2022-03-15 14:37:54,411 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 942 transitions. Word has length 89 [2022-03-15 14:37:54,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:37:54,411 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 942 transitions. [2022-03-15 14:37:54,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:37:54,412 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 942 transitions. [2022-03-15 14:37:54,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-15 14:37:54,413 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:37:54,413 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] [2022-03-15 14:37:54,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-15 14:37:54,414 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:37:54,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:37:54,414 INFO L85 PathProgramCache]: Analyzing trace with hash 249833095, now seen corresponding path program 1 times [2022-03-15 14:37:54,414 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:37:54,415 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771428944] [2022-03-15 14:37:54,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:37:54,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:37:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:37:54,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:37:54,764 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:37:54,764 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771428944] [2022-03-15 14:37:54,765 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771428944] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:37:54,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241513219] [2022-03-15 14:37:54,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:37:54,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:37:54,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:37:54,768 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 14:37:54,769 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 14:37:54,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:37:54,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-15 14:37:54,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:37:55,439 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-03-15 14:37:55,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:37:55,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:37:55,563 INFO L353 Elim1Store]: treesize reduction 14, result has 26.3 percent of original size [2022-03-15 14:37:55,563 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 13 [2022-03-15 14:37:55,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:37:55,702 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241513219] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:37:55,702 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:37:55,702 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 7] total 15 [2022-03-15 14:37:55,702 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338587709] [2022-03-15 14:37:55,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:37:55,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 14:37:55,703 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:37:55,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 14:37:55,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-03-15 14:37:55,704 INFO L87 Difference]: Start difference. First operand 414 states and 942 transitions. Second operand has 15 states, 15 states have (on average 10.866666666666667) internal successors, (163), 15 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:37:55,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:37:55,936 INFO L93 Difference]: Finished difference Result 799 states and 1958 transitions. [2022-03-15 14:37:55,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-15 14:37:55,936 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 10.866666666666667) internal successors, (163), 15 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-03-15 14:37:55,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:37:55,940 INFO L225 Difference]: With dead ends: 799 [2022-03-15 14:37:55,940 INFO L226 Difference]: Without dead ends: 669 [2022-03-15 14:37:55,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=157, Invalid=545, Unknown=0, NotChecked=0, Total=702 [2022-03-15 14:37:55,941 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 229 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:37:55,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 728 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:37:55,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-03-15 14:37:55,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 514. [2022-03-15 14:37:55,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 513 states have (on average 2.348927875243665) internal successors, (1205), 513 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states 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 14:37:55,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1205 transitions. [2022-03-15 14:37:55,955 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1205 transitions. Word has length 96 [2022-03-15 14:37:55,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:37:55,956 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 1205 transitions. [2022-03-15 14:37:55,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.866666666666667) internal successors, (163), 15 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:37:55,956 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1205 transitions. [2022-03-15 14:37:55,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-15 14:37:55,957 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:37:55,958 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] [2022-03-15 14:37:55,984 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 14:37:56,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:37:56,172 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:37:56,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:37:56,172 INFO L85 PathProgramCache]: Analyzing trace with hash -2113726581, now seen corresponding path program 2 times [2022-03-15 14:37:56,172 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:37:56,172 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718232237] [2022-03-15 14:37:56,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:37:56,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:37:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:37:56,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:37:56,481 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:37:56,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718232237] [2022-03-15 14:37:56,482 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718232237] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:37:56,482 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717008389] [2022-03-15 14:37:56,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:37:56,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:37:56,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:37:56,484 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 14:37:56,491 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 14:37:56,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:37:56,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:37:56,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 33 conjunts are in the unsatisfiable core [2022-03-15 14:37:56,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:37:57,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 14:37:57,178 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 14:37:57,255 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-03-15 14:37:57,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:37:57,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:37:57,381 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_89 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_89) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4))) 5)) is different from false [2022-03-15 14:37:57,428 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:37:57,428 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 45 [2022-03-15 14:37:57,432 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-03-15 14:37:57,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:37:57,860 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717008389] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:37:57,860 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:37:57,860 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 30 [2022-03-15 14:37:57,861 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157594699] [2022-03-15 14:37:57,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:37:57,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-15 14:37:57,861 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:37:57,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-15 14:37:57,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=696, Unknown=1, NotChecked=54, Total=870 [2022-03-15 14:37:57,862 INFO L87 Difference]: Start difference. First operand 514 states and 1205 transitions. Second operand has 30 states, 30 states have (on average 6.666666666666667) internal successors, (200), 30 states have internal predecessors, (200), 0 states have call successors, (0), 0 states 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 14:37:58,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:37:58,239 INFO L93 Difference]: Finished difference Result 941 states and 2353 transitions. [2022-03-15 14:37:58,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-15 14:37:58,239 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.666666666666667) internal successors, (200), 30 states have internal predecessors, (200), 0 states have call successors, (0), 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 96 [2022-03-15 14:37:58,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:37:58,244 INFO L225 Difference]: With dead ends: 941 [2022-03-15 14:37:58,244 INFO L226 Difference]: Without dead ends: 811 [2022-03-15 14:37:58,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=277, Invalid=1366, Unknown=1, NotChecked=78, Total=1722 [2022-03-15 14:37:58,248 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 411 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 143 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:37:58,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 990 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 232 Invalid, 0 Unknown, 143 Unchecked, 0.1s Time] [2022-03-15 14:37:58,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2022-03-15 14:37:58,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 507. [2022-03-15 14:37:58,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 506 states have (on average 2.3537549407114624) internal successors, (1191), 506 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:37:58,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 1191 transitions. [2022-03-15 14:37:58,263 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 1191 transitions. Word has length 96 [2022-03-15 14:37:58,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:37:58,264 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 1191 transitions. [2022-03-15 14:37:58,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.666666666666667) internal successors, (200), 30 states have internal predecessors, (200), 0 states have call successors, (0), 0 states 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 14:37:58,264 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 1191 transitions. [2022-03-15 14:37:58,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 14:37:58,265 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:37:58,266 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:58,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-15 14:37:58,479 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,SelfDestructingSolverStorable5 [2022-03-15 14:37:58,480 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:37:58,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:37:58,480 INFO L85 PathProgramCache]: Analyzing trace with hash -541859669, now seen corresponding path program 3 times [2022-03-15 14:37:58,480 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:37:58,481 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391141279] [2022-03-15 14:37:58,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:37:58,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:37:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:37:58,547 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 14:37:58,547 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:37:58,547 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391141279] [2022-03-15 14:37:58,547 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391141279] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:37:58,548 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930335953] [2022-03-15 14:37:58,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:37:58,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:37:58,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:37:58,549 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 14:37:58,551 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 14:37:58,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 14:37:58,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:37:58,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 34 conjunts are in the unsatisfiable core [2022-03-15 14:37:58,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:37:59,265 INFO L353 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-03-15 14:37:59,265 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2022-03-15 14:37:59,333 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 14:37:59,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:37:59,502 INFO L353 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2022-03-15 14:37:59,503 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2022-03-15 14:38:00,229 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 14:38:00,230 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930335953] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:38:00,230 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:38:00,230 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 14, 14] total 25 [2022-03-15 14:38:00,230 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354582447] [2022-03-15 14:38:00,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:38:00,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-15 14:38:00,231 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:00,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-15 14:38:00,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2022-03-15 14:38:00,232 INFO L87 Difference]: Start difference. First operand 507 states and 1191 transitions. Second operand has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 0 states have call successors, (0), 0 states 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 14:38:00,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:00,639 INFO L93 Difference]: Finished difference Result 1645 states and 4033 transitions. [2022-03-15 14:38:00,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 14:38:00,640 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 0 states have call successors, (0), 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 99 [2022-03-15 14:38:00,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:00,646 INFO L225 Difference]: With dead ends: 1645 [2022-03-15 14:38:00,646 INFO L226 Difference]: Without dead ends: 1369 [2022-03-15 14:38:00,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=348, Invalid=1134, Unknown=0, NotChecked=0, Total=1482 [2022-03-15 14:38:00,648 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 709 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:00,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [709 Valid, 1000 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 277 Invalid, 0 Unknown, 56 Unchecked, 0.2s Time] [2022-03-15 14:38:00,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2022-03-15 14:38:00,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 876. [2022-03-15 14:38:00,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 875 states have (on average 2.4525714285714284) internal successors, (2146), 875 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states 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 14:38:00,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 2146 transitions. [2022-03-15 14:38:00,673 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 2146 transitions. Word has length 99 [2022-03-15 14:38:00,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:00,674 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 2146 transitions. [2022-03-15 14:38:00,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 0 states have call successors, (0), 0 states 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 14:38:00,674 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 2146 transitions. [2022-03-15 14:38:00,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-03-15 14:38:00,676 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:00,676 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] [2022-03-15 14:38:00,701 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 14:38:00,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:00,892 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:00,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:00,892 INFO L85 PathProgramCache]: Analyzing trace with hash -176182363, now seen corresponding path program 4 times [2022-03-15 14:38:00,892 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:00,892 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805447167] [2022-03-15 14:38:00,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:00,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:01,015 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 14:38:01,015 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:01,015 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805447167] [2022-03-15 14:38:01,015 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805447167] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:38:01,015 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768034367] [2022-03-15 14:38:01,015 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:38:01,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:01,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:38:01,017 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 14:38:01,018 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 14:38:01,100 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:38:01,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:38:01,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-15 14:38:01,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:38:01,463 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 14:38:01,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:38:01,904 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 14:38:01,904 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768034367] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:38:01,904 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:38:01,904 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2022-03-15 14:38:01,904 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023330369] [2022-03-15 14:38:01,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:38:01,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-15 14:38:01,905 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:01,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-15 14:38:01,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2022-03-15 14:38:01,906 INFO L87 Difference]: Start difference. First operand 876 states and 2146 transitions. Second operand has 25 states, 25 states have (on average 8.56) internal successors, (214), 25 states have internal predecessors, (214), 0 states have call successors, (0), 0 states 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 14:38:02,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:02,248 INFO L93 Difference]: Finished difference Result 956 states and 2300 transitions. [2022-03-15 14:38:02,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-15 14:38:02,248 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.56) internal successors, (214), 25 states have internal predecessors, (214), 0 states have call successors, (0), 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 14:38:02,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:02,254 INFO L225 Difference]: With dead ends: 956 [2022-03-15 14:38:02,261 INFO L226 Difference]: Without dead ends: 764 [2022-03-15 14:38:02,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=317, Invalid=943, Unknown=0, NotChecked=0, Total=1260 [2022-03-15 14:38:02,262 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 681 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:02,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 769 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:38:02,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-03-15 14:38:02,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 759. [2022-03-15 14:38:02,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 758 states have (on average 2.4775725593667546) internal successors, (1878), 758 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states 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 14:38:02,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1878 transitions. [2022-03-15 14:38:02,279 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1878 transitions. Word has length 102 [2022-03-15 14:38:02,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:02,280 INFO L470 AbstractCegarLoop]: Abstraction has 759 states and 1878 transitions. [2022-03-15 14:38:02,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.56) internal successors, (214), 25 states have internal predecessors, (214), 0 states have call successors, (0), 0 states 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 14:38:02,280 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1878 transitions. [2022-03-15 14:38:02,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-15 14:38:02,282 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:02,282 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:02,307 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 14:38:02,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:02,495 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:02,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:02,496 INFO L85 PathProgramCache]: Analyzing trace with hash 453195598, now seen corresponding path program 5 times [2022-03-15 14:38:02,496 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:02,496 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528742371] [2022-03-15 14:38:02,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:02,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:02,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:02,740 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-15 14:38:02,740 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:02,740 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528742371] [2022-03-15 14:38:02,740 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528742371] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:38:02,740 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646437445] [2022-03-15 14:38:02,740 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:38:02,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:02,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:38:02,742 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 14:38:02,742 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 14:38:02,823 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 14:38:02,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:38:02,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 14:38:02,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:38:03,303 INFO L353 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-03-15 14:38:03,303 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 10 [2022-03-15 14:38:03,334 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:38:03,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:38:03,427 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 14:38:03,428 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-03-15 14:38:03,746 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-15 14:38:03,746 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646437445] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:38:03,746 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:38:03,746 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 10] total 26 [2022-03-15 14:38:03,746 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858413287] [2022-03-15 14:38:03,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:38:03,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-15 14:38:03,747 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:03,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-15 14:38:03,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2022-03-15 14:38:03,748 INFO L87 Difference]: Start difference. First operand 759 states and 1878 transitions. Second operand has 26 states, 26 states have (on average 9.73076923076923) internal successors, (253), 26 states have internal predecessors, (253), 0 states have call successors, (0), 0 states 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 14:38:04,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:04,532 INFO L93 Difference]: Finished difference Result 2366 states and 6050 transitions. [2022-03-15 14:38:04,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-15 14:38:04,532 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.73076923076923) internal successors, (253), 26 states have internal predecessors, (253), 0 states have call successors, (0), 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 109 [2022-03-15 14:38:04,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:04,540 INFO L225 Difference]: With dead ends: 2366 [2022-03-15 14:38:04,540 INFO L226 Difference]: Without dead ends: 1564 [2022-03-15 14:38:04,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=447, Invalid=2975, Unknown=0, NotChecked=0, Total=3422 [2022-03-15 14:38:04,542 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 716 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:04,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [716 Valid, 1788 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 553 Invalid, 0 Unknown, 55 Unchecked, 0.3s Time] [2022-03-15 14:38:04,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1564 states. [2022-03-15 14:38:04,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1564 to 668. [2022-03-15 14:38:04,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 667 states have (on average 2.3928035982008997) internal successors, (1596), 667 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 14:38:04,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1596 transitions. [2022-03-15 14:38:04,573 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1596 transitions. Word has length 109 [2022-03-15 14:38:04,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:04,573 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 1596 transitions. [2022-03-15 14:38:04,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.73076923076923) internal successors, (253), 26 states have internal predecessors, (253), 0 states have call successors, (0), 0 states 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 14:38:04,574 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1596 transitions. [2022-03-15 14:38:04,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-15 14:38:04,576 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:04,576 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:04,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-15 14:38:04,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:04,796 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:04,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:04,796 INFO L85 PathProgramCache]: Analyzing trace with hash 269033586, now seen corresponding path program 6 times [2022-03-15 14:38:04,796 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:04,796 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348568978] [2022-03-15 14:38:04,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:04,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:05,087 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-15 14:38:05,087 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:05,087 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348568978] [2022-03-15 14:38:05,088 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348568978] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:38:05,088 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63999789] [2022-03-15 14:38:05,088 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:38:05,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:05,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:38:05,089 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 14:38:05,090 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 14:38:05,169 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 14:38:05,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:38:05,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 35 conjunts are in the unsatisfiable core [2022-03-15 14:38:05,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:38:05,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 14:38:05,713 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-03-15 14:38:05,784 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-03-15 14:38:05,812 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-15 14:38:05,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:38:05,890 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_194 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_194) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 4)))) is different from false [2022-03-15 14:38:05,905 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:38:05,906 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 47 [2022-03-15 14:38:05,909 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-03-15 14:38:06,342 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-15 14:38:06,343 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63999789] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:38:06,343 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:38:06,343 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 16] total 38 [2022-03-15 14:38:06,343 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587310992] [2022-03-15 14:38:06,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:38:06,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-03-15 14:38:06,346 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:06,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-03-15 14:38:06,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1187, Unknown=1, NotChecked=70, Total=1406 [2022-03-15 14:38:06,347 INFO L87 Difference]: Start difference. First operand 668 states and 1596 transitions. Second operand has 38 states, 38 states have (on average 6.315789473684211) internal successors, (240), 38 states have internal predecessors, (240), 0 states have call successors, (0), 0 states 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 14:38:07,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:07,161 INFO L93 Difference]: Finished difference Result 1347 states and 3410 transitions. [2022-03-15 14:38:07,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 14:38:07,161 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 6.315789473684211) internal successors, (240), 38 states have internal predecessors, (240), 0 states have call successors, (0), 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 109 [2022-03-15 14:38:07,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:07,166 INFO L225 Difference]: With dead ends: 1347 [2022-03-15 14:38:07,166 INFO L226 Difference]: Without dead ends: 1217 [2022-03-15 14:38:07,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 197 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=372, Invalid=2711, Unknown=1, NotChecked=108, Total=3192 [2022-03-15 14:38:07,168 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 557 mSDsluCounter, 1941 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 1945 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 185 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:07,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [557 Valid, 1945 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 599 Invalid, 0 Unknown, 185 Unchecked, 0.3s Time] [2022-03-15 14:38:07,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2022-03-15 14:38:07,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 661. [2022-03-15 14:38:07,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 660 states have (on average 2.396969696969697) internal successors, (1582), 660 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states 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 14:38:07,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1582 transitions. [2022-03-15 14:38:07,187 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1582 transitions. Word has length 109 [2022-03-15 14:38:07,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:07,187 INFO L470 AbstractCegarLoop]: Abstraction has 661 states and 1582 transitions. [2022-03-15 14:38:07,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 6.315789473684211) internal successors, (240), 38 states have internal predecessors, (240), 0 states have call successors, (0), 0 states 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 14:38:07,187 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1582 transitions. [2022-03-15 14:38:07,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-03-15 14:38:07,189 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:07,189 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:07,217 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 14:38:07,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:07,412 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:07,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:07,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1926579844, now seen corresponding path program 7 times [2022-03-15 14:38:07,413 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:07,413 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011786336] [2022-03-15 14:38:07,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:07,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:07,476 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-15 14:38:07,476 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:07,476 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011786336] [2022-03-15 14:38:07,476 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011786336] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:38:07,477 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511392594] [2022-03-15 14:38:07,477 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:38:07,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:07,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:38:07,480 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 14:38:07,489 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 14:38:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:07,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-15 14:38:07,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:38:07,754 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-15 14:38:07,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:38:07,971 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-15 14:38:07,972 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511392594] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:38:07,972 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:38:07,972 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-03-15 14:38:07,972 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921603542] [2022-03-15 14:38:07,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:38:07,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 14:38:07,973 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:07,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 14:38:07,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-03-15 14:38:07,974 INFO L87 Difference]: Start difference. First operand 661 states and 1582 transitions. Second operand has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:08,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:08,008 INFO L93 Difference]: Finished difference Result 1753 states and 4401 transitions. [2022-03-15 14:38:08,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 14:38:08,009 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-03-15 14:38:08,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:08,015 INFO L225 Difference]: With dead ends: 1753 [2022-03-15 14:38:08,015 INFO L226 Difference]: Without dead ends: 1558 [2022-03-15 14:38:08,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 224 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-03-15 14:38:08,016 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 140 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:08,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 326 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:38:08,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2022-03-15 14:38:08,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1159. [2022-03-15 14:38:08,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1158 states have (on average 2.5673575129533677) internal successors, (2973), 1158 states have internal predecessors, (2973), 0 states have call successors, (0), 0 states 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 14:38:08,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 2973 transitions. [2022-03-15 14:38:08,044 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 2973 transitions. Word has length 112 [2022-03-15 14:38:08,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:08,044 INFO L470 AbstractCegarLoop]: Abstraction has 1159 states and 2973 transitions. [2022-03-15 14:38:08,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:08,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 2973 transitions. [2022-03-15 14:38:08,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-03-15 14:38:08,051 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:08,051 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:08,074 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 14:38:08,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:08,267 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:08,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:08,268 INFO L85 PathProgramCache]: Analyzing trace with hash 856762834, now seen corresponding path program 8 times [2022-03-15 14:38:08,268 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:08,268 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270038252] [2022-03-15 14:38:08,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:08,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:08,508 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-15 14:38:08,508 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:08,508 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270038252] [2022-03-15 14:38:08,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270038252] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:38:08,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668064418] [2022-03-15 14:38:08,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:38:08,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:08,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:38:08,512 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 14:38:08,514 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 14:38:08,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:38:08,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:38:08,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-15 14:38:08,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:38:09,186 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-15 14:38:09,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:38:09,734 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-15 14:38:09,735 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668064418] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:38:09,735 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:38:09,735 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 37 [2022-03-15 14:38:09,735 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450470158] [2022-03-15 14:38:09,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:38:09,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-15 14:38:09,736 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:09,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-15 14:38:09,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=1049, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 14:38:09,737 INFO L87 Difference]: Start difference. First operand 1159 states and 2973 transitions. Second operand has 37 states, 37 states have (on average 6.864864864864865) internal successors, (254), 37 states have internal predecessors, (254), 0 states have call successors, (0), 0 states 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 14:38:10,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:10,266 INFO L93 Difference]: Finished difference Result 1723 states and 4315 transitions. [2022-03-15 14:38:10,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-15 14:38:10,266 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 6.864864864864865) internal successors, (254), 37 states have internal predecessors, (254), 0 states have call successors, (0), 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 115 [2022-03-15 14:38:10,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:10,272 INFO L225 Difference]: With dead ends: 1723 [2022-03-15 14:38:10,272 INFO L226 Difference]: Without dead ends: 1372 [2022-03-15 14:38:10,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=697, Invalid=2273, Unknown=0, NotChecked=0, Total=2970 [2022-03-15 14:38:10,274 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 900 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:10,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [900 Valid, 1014 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:38:10,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2022-03-15 14:38:10,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1166. [2022-03-15 14:38:10,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1165 states have (on average 2.5579399141630903) internal successors, (2980), 1165 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states 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 14:38:10,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 2980 transitions. [2022-03-15 14:38:10,302 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 2980 transitions. Word has length 115 [2022-03-15 14:38:10,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:10,302 INFO L470 AbstractCegarLoop]: Abstraction has 1166 states and 2980 transitions. [2022-03-15 14:38:10,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 6.864864864864865) internal successors, (254), 37 states have internal predecessors, (254), 0 states have call successors, (0), 0 states 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 14:38:10,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 2980 transitions. [2022-03-15 14:38:10,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-03-15 14:38:10,305 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:10,306 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:10,329 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 14:38:10,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-03-15 14:38:10,524 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:10,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:10,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1114783911, now seen corresponding path program 9 times [2022-03-15 14:38:10,524 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:10,525 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220184228] [2022-03-15 14:38:10,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:10,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:10,972 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:10,972 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:10,972 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220184228] [2022-03-15 14:38:10,972 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220184228] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:38:10,973 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656845840] [2022-03-15 14:38:10,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:38:10,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:10,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:38:10,974 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 14:38:10,975 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 14:38:11,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-15 14:38:11,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:38:11,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 56 conjunts are in the unsatisfiable core [2022-03-15 14:38:11,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:38:11,892 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-15 14:38:12,142 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:38:12,207 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:38:12,748 INFO L353 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2022-03-15 14:38:12,749 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-15 14:38:12,778 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 38 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-15 14:38:12,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:38:14,822 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:38:14,822 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 51 [2022-03-15 14:38:14,834 INFO L353 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2022-03-15 14:38:14,834 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 324 treesize of output 297 [2022-03-15 14:38:14,845 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-03-15 14:38:14,846 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 286 treesize of output 226 [2022-03-15 14:38:14,856 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-03-15 14:38:14,857 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 226 treesize of output 196 [2022-03-15 14:38:15,448 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 40 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-15 14:38:15,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656845840] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:38:15,448 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:38:15,448 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 28, 25] total 64 [2022-03-15 14:38:15,448 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902456924] [2022-03-15 14:38:15,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:38:15,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-03-15 14:38:15,449 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:15,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-03-15 14:38:15,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=456, Invalid=3523, Unknown=53, NotChecked=0, Total=4032 [2022-03-15 14:38:15,451 INFO L87 Difference]: Start difference. First operand 1166 states and 2980 transitions. Second operand has 64 states, 64 states have (on average 4.609375) internal successors, (295), 64 states have internal predecessors, (295), 0 states have call successors, (0), 0 states 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 14:38:18,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:18,356 INFO L93 Difference]: Finished difference Result 5035 states and 13427 transitions. [2022-03-15 14:38:18,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-15 14:38:18,357 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.609375) internal successors, (295), 64 states have internal predecessors, (295), 0 states have call successors, (0), 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 122 [2022-03-15 14:38:18,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:18,377 INFO L225 Difference]: With dead ends: 5035 [2022-03-15 14:38:18,378 INFO L226 Difference]: Without dead ends: 4642 [2022-03-15 14:38:18,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3642 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1796, Invalid=11033, Unknown=53, NotChecked=0, Total=12882 [2022-03-15 14:38:18,381 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 2185 mSDsluCounter, 5006 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2185 SdHoareTripleChecker+Valid, 4754 SdHoareTripleChecker+Invalid, 2017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1083 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:18,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2185 Valid, 4754 Invalid, 2017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 865 Invalid, 0 Unknown, 1083 Unchecked, 0.4s Time] [2022-03-15 14:38:18,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4642 states. [2022-03-15 14:38:18,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4642 to 2797. [2022-03-15 14:38:18,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2797 states, 2796 states have (on average 2.724606580829757) internal successors, (7618), 2796 states have internal predecessors, (7618), 0 states have call successors, (0), 0 states 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 14:38:18,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 7618 transitions. [2022-03-15 14:38:18,491 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 7618 transitions. Word has length 122 [2022-03-15 14:38:18,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:18,491 INFO L470 AbstractCegarLoop]: Abstraction has 2797 states and 7618 transitions. [2022-03-15 14:38:18,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.609375) internal successors, (295), 64 states have internal predecessors, (295), 0 states have call successors, (0), 0 states 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 14:38:18,492 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 7618 transitions. [2022-03-15 14:38:18,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-03-15 14:38:18,498 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:18,499 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:18,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-15 14:38:18,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-15 14:38:18,711 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:18,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:18,712 INFO L85 PathProgramCache]: Analyzing trace with hash -776672213, now seen corresponding path program 10 times [2022-03-15 14:38:18,712 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:18,712 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209763599] [2022-03-15 14:38:18,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:18,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:18,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:19,081 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:19,082 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:19,082 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209763599] [2022-03-15 14:38:19,082 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209763599] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:38:19,082 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256239455] [2022-03-15 14:38:19,082 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:38:19,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:19,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:38:19,083 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 14:38:19,084 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 14:38:19,157 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:38:19,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:38:19,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 44 conjunts are in the unsatisfiable core [2022-03-15 14:38:19,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:38:19,740 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-03-15 14:38:19,770 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:38:19,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:38:19,894 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 14:38:19,894 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-03-15 14:38:20,181 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-15 14:38:20,182 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256239455] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:38:20,182 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:38:20,182 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 11] total 30 [2022-03-15 14:38:20,182 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906262827] [2022-03-15 14:38:20,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:38:20,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-15 14:38:20,183 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:20,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-15 14:38:20,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=764, Unknown=0, NotChecked=0, Total=870 [2022-03-15 14:38:20,184 INFO L87 Difference]: Start difference. First operand 2797 states and 7618 transitions. Second operand has 30 states, 30 states have (on average 7.333333333333333) internal successors, (220), 30 states have internal predecessors, (220), 0 states have call successors, (0), 0 states 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 14:38:21,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:21,687 INFO L93 Difference]: Finished difference Result 10691 states and 29352 transitions. [2022-03-15 14:38:21,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-03-15 14:38:21,687 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 7.333333333333333) internal successors, (220), 30 states have internal predecessors, (220), 0 states have call successors, (0), 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 122 [2022-03-15 14:38:21,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:21,734 INFO L225 Difference]: With dead ends: 10691 [2022-03-15 14:38:21,734 INFO L226 Difference]: Without dead ends: 8450 [2022-03-15 14:38:21,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 223 SyntacticMatches, 14 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3854 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=987, Invalid=9113, Unknown=0, NotChecked=0, Total=10100 [2022-03-15 14:38:21,738 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 1446 mSDsluCounter, 2876 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:21,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1446 Valid, 2838 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:38:21,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8450 states. [2022-03-15 14:38:21,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8450 to 2092. [2022-03-15 14:38:21,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2092 states, 2091 states have (on average 2.6652319464371113) internal successors, (5573), 2091 states have internal predecessors, (5573), 0 states have call successors, (0), 0 states 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 14:38:21,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 5573 transitions. [2022-03-15 14:38:21,844 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 5573 transitions. Word has length 122 [2022-03-15 14:38:21,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:21,845 INFO L470 AbstractCegarLoop]: Abstraction has 2092 states and 5573 transitions. [2022-03-15 14:38:21,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.333333333333333) internal successors, (220), 30 states have internal predecessors, (220), 0 states have call successors, (0), 0 states 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 14:38:21,845 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 5573 transitions. [2022-03-15 14:38:21,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-03-15 14:38:21,851 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:21,852 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:21,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-15 14:38:22,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-03-15 14:38:22,067 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:22,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:22,068 INFO L85 PathProgramCache]: Analyzing trace with hash 328572843, now seen corresponding path program 11 times [2022-03-15 14:38:22,068 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:22,068 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893315841] [2022-03-15 14:38:22,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:22,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:22,542 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:22,542 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:22,542 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893315841] [2022-03-15 14:38:22,542 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893315841] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:38:22,542 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835976747] [2022-03-15 14:38:22,542 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:38:22,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:22,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:38:22,543 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 14:38:22,544 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 14:38:22,645 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 14:38:22,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:38:22,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-15 14:38:22,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:38:22,683 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:38:22,770 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:38:22,771 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 14:38:23,106 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-03-15 14:38:23,174 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-15 14:38:23,201 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-15 14:38:23,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:38:23,262 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_352 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_352) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 8)) 5)) is different from false [2022-03-15 14:38:23,271 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:38:23,271 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 47 [2022-03-15 14:38:23,278 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-03-15 14:38:23,698 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-03-15 14:38:23,718 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-15 14:38:23,718 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835976747] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:38:23,718 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:38:23,718 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18, 18] total 39 [2022-03-15 14:38:23,718 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656952971] [2022-03-15 14:38:23,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:38:23,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-15 14:38:23,719 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:23,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-15 14:38:23,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1264, Unknown=1, NotChecked=72, Total=1482 [2022-03-15 14:38:23,720 INFO L87 Difference]: Start difference. First operand 2092 states and 5573 transitions. Second operand has 39 states, 39 states have (on average 5.794871794871795) internal successors, (226), 39 states have internal predecessors, (226), 0 states have call successors, (0), 0 states 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 14:38:24,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:24,748 INFO L93 Difference]: Finished difference Result 4030 states and 10893 transitions. [2022-03-15 14:38:24,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-15 14:38:24,748 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.794871794871795) internal successors, (226), 39 states have internal predecessors, (226), 0 states have call successors, (0), 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 122 [2022-03-15 14:38:24,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:24,758 INFO L225 Difference]: With dead ends: 4030 [2022-03-15 14:38:24,758 INFO L226 Difference]: Without dead ends: 3884 [2022-03-15 14:38:24,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 230 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 1486 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=575, Invalid=4540, Unknown=1, NotChecked=140, Total=5256 [2022-03-15 14:38:24,760 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 811 mSDsluCounter, 2412 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 2386 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 231 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:24,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [811 Valid, 2386 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 934 Invalid, 0 Unknown, 231 Unchecked, 0.4s Time] [2022-03-15 14:38:24,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3884 states. [2022-03-15 14:38:24,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3884 to 2046. [2022-03-15 14:38:24,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2046 states, 2045 states have (on average 2.6533007334963323) internal successors, (5426), 2045 states have internal predecessors, (5426), 0 states have call successors, (0), 0 states 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 14:38:24,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2046 states to 2046 states and 5426 transitions. [2022-03-15 14:38:24,819 INFO L78 Accepts]: Start accepts. Automaton has 2046 states and 5426 transitions. Word has length 122 [2022-03-15 14:38:24,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:24,819 INFO L470 AbstractCegarLoop]: Abstraction has 2046 states and 5426 transitions. [2022-03-15 14:38:24,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.794871794871795) internal successors, (226), 39 states have internal predecessors, (226), 0 states have call successors, (0), 0 states 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 14:38:24,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2046 states and 5426 transitions. [2022-03-15 14:38:24,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-03-15 14:38:24,824 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:24,825 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:24,853 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 14:38:25,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-03-15 14:38:25,048 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:25,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:25,049 INFO L85 PathProgramCache]: Analyzing trace with hash -192365041, now seen corresponding path program 12 times [2022-03-15 14:38:25,049 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:25,049 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608107687] [2022-03-15 14:38:25,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:25,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:25,110 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-15 14:38:25,111 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:25,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608107687] [2022-03-15 14:38:25,111 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608107687] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:38:25,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446313962] [2022-03-15 14:38:25,111 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:38:25,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:25,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:38:25,113 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 14:38:25,136 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 14:38:25,433 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-15 14:38:25,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:38:25,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 14:38:25,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:38:25,651 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-15 14:38:25,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:38:25,817 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-15 14:38:25,817 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446313962] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:38:25,817 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:38:25,817 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 7 [2022-03-15 14:38:25,818 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210105134] [2022-03-15 14:38:25,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:38:25,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 14:38:25,818 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:25,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 14:38:25,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-03-15 14:38:25,819 INFO L87 Difference]: Start difference. First operand 2046 states and 5426 transitions. Second operand has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states 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 14:38:25,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:25,854 INFO L93 Difference]: Finished difference Result 5115 states and 13883 transitions. [2022-03-15 14:38:25,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 14:38:25,855 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 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 125 [2022-03-15 14:38:25,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:25,866 INFO L225 Difference]: With dead ends: 5115 [2022-03-15 14:38:25,866 INFO L226 Difference]: Without dead ends: 4571 [2022-03-15 14:38:25,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 251 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-03-15 14:38:25,867 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 209 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:25,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 310 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:38:25,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4571 states. [2022-03-15 14:38:25,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4571 to 3568. [2022-03-15 14:38:25,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3568 states, 3567 states have (on average 2.747687132043734) internal successors, (9801), 3567 states have internal predecessors, (9801), 0 states have call successors, (0), 0 states 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 14:38:25,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3568 states to 3568 states and 9801 transitions. [2022-03-15 14:38:25,950 INFO L78 Accepts]: Start accepts. Automaton has 3568 states and 9801 transitions. Word has length 125 [2022-03-15 14:38:25,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:25,951 INFO L470 AbstractCegarLoop]: Abstraction has 3568 states and 9801 transitions. [2022-03-15 14:38:25,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states 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 14:38:25,951 INFO L276 IsEmpty]: Start isEmpty. Operand 3568 states and 9801 transitions. [2022-03-15 14:38:25,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-03-15 14:38:25,960 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:25,960 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:25,988 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 14:38:26,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-15 14:38:26,175 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:26,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:26,176 INFO L85 PathProgramCache]: Analyzing trace with hash -48474905, now seen corresponding path program 13 times [2022-03-15 14:38:26,176 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:26,176 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038997584] [2022-03-15 14:38:26,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:26,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:26,406 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 13 proven. 33 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-03-15 14:38:26,407 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:26,407 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038997584] [2022-03-15 14:38:26,407 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038997584] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:38:26,407 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861059209] [2022-03-15 14:38:26,407 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:38:26,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:26,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:38:26,408 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 14:38:26,410 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 14:38:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:26,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-15 14:38:26,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:38:27,111 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 22 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-03-15 14:38:27,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:38:27,659 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 13 proven. 33 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-03-15 14:38:27,660 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861059209] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:38:27,660 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:38:27,660 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 14:38:27,660 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359703398] [2022-03-15 14:38:27,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:38:27,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-03-15 14:38:27,660 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:27,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-03-15 14:38:27,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=1655, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 14:38:27,662 INFO L87 Difference]: Start difference. First operand 3568 states and 9801 transitions. Second operand has 46 states, 46 states have (on average 6.173913043478261) internal successors, (284), 46 states have internal predecessors, (284), 0 states have call successors, (0), 0 states 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 14:38:28,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:28,397 INFO L93 Difference]: Finished difference Result 2949 states and 7480 transitions. [2022-03-15 14:38:28,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-15 14:38:28,397 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 6.173913043478261) internal successors, (284), 46 states have internal predecessors, (284), 0 states have call successors, (0), 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 128 [2022-03-15 14:38:28,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:28,401 INFO L225 Difference]: With dead ends: 2949 [2022-03-15 14:38:28,401 INFO L226 Difference]: Without dead ends: 1908 [2022-03-15 14:38:28,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1781 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1088, Invalid=3882, Unknown=0, NotChecked=0, Total=4970 [2022-03-15 14:38:28,403 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 993 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:28,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [993 Valid, 1529 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:38:28,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2022-03-15 14:38:28,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1666. [2022-03-15 14:38:28,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1666 states, 1665 states have (on average 2.601201201201201) internal successors, (4331), 1665 states have internal predecessors, (4331), 0 states have call successors, (0), 0 states 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 14:38:28,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 4331 transitions. [2022-03-15 14:38:28,435 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 4331 transitions. Word has length 128 [2022-03-15 14:38:28,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:28,436 INFO L470 AbstractCegarLoop]: Abstraction has 1666 states and 4331 transitions. [2022-03-15 14:38:28,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 6.173913043478261) internal successors, (284), 46 states have internal predecessors, (284), 0 states have call successors, (0), 0 states 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 14:38:28,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 4331 transitions. [2022-03-15 14:38:28,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-03-15 14:38:28,440 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:28,440 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:38:28,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-15 14:38:28,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-15 14:38:28,655 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:28,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:28,656 INFO L85 PathProgramCache]: Analyzing trace with hash 552932526, now seen corresponding path program 14 times [2022-03-15 14:38:28,656 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:28,656 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733955679] [2022-03-15 14:38:28,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:28,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:29,124 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:29,125 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:29,125 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733955679] [2022-03-15 14:38:29,125 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733955679] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:38:29,125 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508242719] [2022-03-15 14:38:29,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:38:29,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:29,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:38:29,128 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 14:38:29,131 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 14:38:29,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:38:29,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:38:29,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 48 conjunts are in the unsatisfiable core [2022-03-15 14:38:29,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:38:29,805 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-03-15 14:38:29,831 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:38:29,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:38:29,953 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 14:38:29,953 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-03-15 14:38:30,329 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-15 14:38:30,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508242719] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:38:30,329 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:38:30,330 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 20, 13] total 47 [2022-03-15 14:38:30,330 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836953560] [2022-03-15 14:38:30,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:38:30,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 14:38:30,330 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:30,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 14:38:30,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1976, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 14:38:30,332 INFO L87 Difference]: Start difference. First operand 1666 states and 4331 transitions. Second operand has 47 states, 47 states have (on average 6.276595744680851) internal successors, (295), 47 states have internal predecessors, (295), 0 states have call successors, (0), 0 states 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 14:38:33,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:33,305 INFO L93 Difference]: Finished difference Result 11428 states and 30191 transitions. [2022-03-15 14:38:33,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-03-15 14:38:33,305 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 6.276595744680851) internal successors, (295), 47 states have internal predecessors, (295), 0 states have call successors, (0), 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 135 [2022-03-15 14:38:33,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:33,321 INFO L225 Difference]: With dead ends: 11428 [2022-03-15 14:38:33,321 INFO L226 Difference]: Without dead ends: 7904 [2022-03-15 14:38:33,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 240 SyntacticMatches, 10 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9276 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1756, Invalid=22114, Unknown=0, NotChecked=0, Total=23870 [2022-03-15 14:38:33,323 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 2735 mSDsluCounter, 7596 mSDsCounter, 0 mSdLazyCounter, 3011 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2735 SdHoareTripleChecker+Valid, 7167 SdHoareTripleChecker+Invalid, 3161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 3011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:33,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2735 Valid, 7167 Invalid, 3161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 3011 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 14:38:33,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7904 states. [2022-03-15 14:38:33,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7904 to 976. [2022-03-15 14:38:33,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 975 states have (on average 2.438974358974359) internal successors, (2378), 975 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states 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 14:38:33,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 2378 transitions. [2022-03-15 14:38:33,376 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 2378 transitions. Word has length 135 [2022-03-15 14:38:33,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:33,376 INFO L470 AbstractCegarLoop]: Abstraction has 976 states and 2378 transitions. [2022-03-15 14:38:33,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 6.276595744680851) internal successors, (295), 47 states have internal predecessors, (295), 0 states have call successors, (0), 0 states 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 14:38:33,377 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 2378 transitions. [2022-03-15 14:38:33,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-03-15 14:38:33,379 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:33,379 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:38:33,404 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 14:38:33,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:33,599 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:33,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:33,600 INFO L85 PathProgramCache]: Analyzing trace with hash 532157394, now seen corresponding path program 15 times [2022-03-15 14:38:33,600 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:33,600 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976885915] [2022-03-15 14:38:33,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:33,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:33,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:34,176 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:34,176 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:34,176 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976885915] [2022-03-15 14:38:34,176 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976885915] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:38:34,176 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877675549] [2022-03-15 14:38:34,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:38:34,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:34,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:38:34,178 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 14:38:34,178 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 14:38:34,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-15 14:38:34,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:38:34,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 60 conjunts are in the unsatisfiable core [2022-03-15 14:38:34,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:38:35,459 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-15 14:38:35,728 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:38:35,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 14:38:35,927 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-03-15 14:38:36,492 INFO L353 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2022-03-15 14:38:36,493 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-15 14:38:36,520 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 63 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-03-15 14:38:36,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:38:38,451 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:38:38,451 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 48 [2022-03-15 14:38:38,463 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:38:38,463 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 184 treesize of output 176 [2022-03-15 14:38:38,473 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:38:38,473 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 157 treesize of output 155 [2022-03-15 14:38:38,488 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 94 [2022-03-15 14:38:39,748 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 63 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-03-15 14:38:39,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877675549] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:38:39,748 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:38:39,748 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 31, 31] total 79 [2022-03-15 14:38:39,748 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599130767] [2022-03-15 14:38:39,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:38:39,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-03-15 14:38:39,749 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:39,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-03-15 14:38:39,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=523, Invalid=5620, Unknown=19, NotChecked=0, Total=6162 [2022-03-15 14:38:39,750 INFO L87 Difference]: Start difference. First operand 976 states and 2378 transitions. Second operand has 79 states, 79 states have (on average 4.10126582278481) internal successors, (324), 79 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 14:38:43,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:43,619 INFO L93 Difference]: Finished difference Result 7037 states and 18862 transitions. [2022-03-15 14:38:43,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-15 14:38:43,619 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 4.10126582278481) internal successors, (324), 79 states have internal predecessors, (324), 0 states have call successors, (0), 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 135 [2022-03-15 14:38:43,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:43,630 INFO L225 Difference]: With dead ends: 7037 [2022-03-15 14:38:43,630 INFO L226 Difference]: Without dead ends: 6811 [2022-03-15 14:38:43,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5222 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2188, Invalid=15080, Unknown=24, NotChecked=0, Total=17292 [2022-03-15 14:38:43,632 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 2570 mSDsluCounter, 7021 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2570 SdHoareTripleChecker+Valid, 7013 SdHoareTripleChecker+Invalid, 2154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 736 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:43,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2570 Valid, 7013 Invalid, 2154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1329 Invalid, 0 Unknown, 736 Unchecked, 0.5s Time] [2022-03-15 14:38:43,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6811 states. [2022-03-15 14:38:43,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6811 to 3828. [2022-03-15 14:38:43,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3828 states, 3827 states have (on average 2.7285079696890513) internal successors, (10442), 3827 states have internal predecessors, (10442), 0 states have call successors, (0), 0 states 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 14:38:43,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3828 states to 3828 states and 10442 transitions. [2022-03-15 14:38:43,751 INFO L78 Accepts]: Start accepts. Automaton has 3828 states and 10442 transitions. Word has length 135 [2022-03-15 14:38:43,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:43,751 INFO L470 AbstractCegarLoop]: Abstraction has 3828 states and 10442 transitions. [2022-03-15 14:38:43,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 4.10126582278481) internal successors, (324), 79 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 14:38:43,751 INFO L276 IsEmpty]: Start isEmpty. Operand 3828 states and 10442 transitions. [2022-03-15 14:38:43,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-03-15 14:38:43,761 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:43,762 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:38:43,785 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 14:38:43,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:43,983 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:43,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:43,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1359298730, now seen corresponding path program 16 times [2022-03-15 14:38:43,984 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:43,984 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030185115] [2022-03-15 14:38:43,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:43,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:44,520 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:44,521 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:44,521 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030185115] [2022-03-15 14:38:44,521 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030185115] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:38:44,521 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198386410] [2022-03-15 14:38:44,521 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:38:44,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:44,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:38:44,522 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 14:38:44,523 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 14:38:44,603 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:38:44,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:38:44,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 66 conjunts are in the unsatisfiable core [2022-03-15 14:38:44,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:38:44,643 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:38:44,757 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:38:44,757 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 14:38:45,273 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-03-15 14:38:45,448 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-03-15 14:38:45,472 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:38:45,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:38:45,589 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_530 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_530) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 12)))) is different from false [2022-03-15 14:38:45,598 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:38:45,598 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 47 [2022-03-15 14:38:45,601 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-03-15 14:38:46,193 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-03-15 14:38:46,228 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-15 14:38:46,228 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198386410] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:38:46,228 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:38:46,228 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 20] total 46 [2022-03-15 14:38:46,228 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676278582] [2022-03-15 14:38:46,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:38:46,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-03-15 14:38:46,229 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:46,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-03-15 14:38:46,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1808, Unknown=1, NotChecked=86, Total=2070 [2022-03-15 14:38:46,230 INFO L87 Difference]: Start difference. First operand 3828 states and 10442 transitions. Second operand has 46 states, 46 states have (on average 5.260869565217392) internal successors, (242), 46 states have internal predecessors, (242), 0 states have call successors, (0), 0 states 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 14:38:47,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:47,756 INFO L93 Difference]: Finished difference Result 8075 states and 22231 transitions. [2022-03-15 14:38:47,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-15 14:38:47,757 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 5.260869565217392) internal successors, (242), 46 states have internal predecessors, (242), 0 states have call successors, (0), 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 135 [2022-03-15 14:38:47,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:47,768 INFO L225 Difference]: With dead ends: 8075 [2022-03-15 14:38:47,768 INFO L226 Difference]: Without dead ends: 7929 [2022-03-15 14:38:47,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 248 SyntacticMatches, 5 SemanticMatches, 89 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 2303 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=748, Invalid=7265, Unknown=1, NotChecked=176, Total=8190 [2022-03-15 14:38:47,770 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 1431 mSDsluCounter, 3406 mSDsCounter, 0 mSdLazyCounter, 1445 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 3374 SdHoareTripleChecker+Invalid, 1950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 395 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:47,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1431 Valid, 3374 Invalid, 1950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1445 Invalid, 0 Unknown, 395 Unchecked, 0.5s Time] [2022-03-15 14:38:47,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7929 states. [2022-03-15 14:38:47,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7929 to 3221. [2022-03-15 14:38:47,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3221 states, 3220 states have (on average 2.710248447204969) internal successors, (8727), 3220 states have internal predecessors, (8727), 0 states have call successors, (0), 0 states 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 14:38:47,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3221 states to 3221 states and 8727 transitions. [2022-03-15 14:38:47,848 INFO L78 Accepts]: Start accepts. Automaton has 3221 states and 8727 transitions. Word has length 135 [2022-03-15 14:38:47,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:47,849 INFO L470 AbstractCegarLoop]: Abstraction has 3221 states and 8727 transitions. [2022-03-15 14:38:47,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 5.260869565217392) internal successors, (242), 46 states have internal predecessors, (242), 0 states have call successors, (0), 0 states 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 14:38:47,849 INFO L276 IsEmpty]: Start isEmpty. Operand 3221 states and 8727 transitions. [2022-03-15 14:38:47,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-03-15 14:38:47,856 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:47,856 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:38:47,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-15 14:38:48,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:48,071 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:48,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:48,072 INFO L85 PathProgramCache]: Analyzing trace with hash -819423064, now seen corresponding path program 17 times [2022-03-15 14:38:48,072 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:48,072 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803515643] [2022-03-15 14:38:48,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:48,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:48,169 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-15 14:38:48,169 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:48,169 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803515643] [2022-03-15 14:38:48,169 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803515643] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:38:48,169 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179354406] [2022-03-15 14:38:48,169 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:38:48,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:48,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:38:48,172 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:38:48,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-15 14:38:48,428 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-03-15 14:38:48,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:38:48,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-15 14:38:48,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:38:48,618 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-15 14:38:48,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:38:48,806 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-15 14:38:48,807 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179354406] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:38:48,807 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:38:48,807 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 8 [2022-03-15 14:38:48,807 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054386778] [2022-03-15 14:38:48,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:38:48,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 14:38:48,808 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:48,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 14:38:48,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-03-15 14:38:48,808 INFO L87 Difference]: Start difference. First operand 3221 states and 8727 transitions. Second operand has 8 states, 8 states have (on average 22.0) internal successors, (176), 8 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:48,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:48,862 INFO L93 Difference]: Finished difference Result 7836 states and 21310 transitions. [2022-03-15 14:38:48,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 14:38:48,863 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.0) internal successors, (176), 8 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2022-03-15 14:38:48,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:48,874 INFO L225 Difference]: With dead ends: 7836 [2022-03-15 14:38:48,874 INFO L226 Difference]: Without dead ends: 6991 [2022-03-15 14:38:48,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 278 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-03-15 14:38:48,874 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 224 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:48,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 416 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:38:48,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6991 states. [2022-03-15 14:38:48,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6991 to 5591. [2022-03-15 14:38:48,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5591 states, 5590 states have (on average 2.750447227191413) internal successors, (15375), 5590 states have internal predecessors, (15375), 0 states have call successors, (0), 0 states 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 14:38:48,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5591 states to 5591 states and 15375 transitions. [2022-03-15 14:38:48,980 INFO L78 Accepts]: Start accepts. Automaton has 5591 states and 15375 transitions. Word has length 138 [2022-03-15 14:38:48,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:48,981 INFO L470 AbstractCegarLoop]: Abstraction has 5591 states and 15375 transitions. [2022-03-15 14:38:48,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.0) internal successors, (176), 8 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:48,981 INFO L276 IsEmpty]: Start isEmpty. Operand 5591 states and 15375 transitions. [2022-03-15 14:38:48,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-15 14:38:48,992 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:48,992 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:38:49,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-15 14:38:49,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:49,207 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:49,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:49,208 INFO L85 PathProgramCache]: Analyzing trace with hash -272799818, now seen corresponding path program 18 times [2022-03-15 14:38:49,208 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:49,208 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480825881] [2022-03-15 14:38:49,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:49,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:49,499 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 23 proven. 58 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-03-15 14:38:49,499 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:49,499 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480825881] [2022-03-15 14:38:49,499 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480825881] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:38:49,499 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276319055] [2022-03-15 14:38:49,500 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:38:49,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:49,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:38:49,504 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:38:49,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-15 14:38:49,938 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-03-15 14:38:49,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:38:49,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:38:49,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:38:50,502 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-03-15 14:38:50,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:38:51,107 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-03-15 14:38:51,107 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276319055] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:38:51,107 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:38:51,107 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 50 [2022-03-15 14:38:51,107 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996552194] [2022-03-15 14:38:51,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:38:51,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-15 14:38:51,108 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:51,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-15 14:38:51,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=2040, Unknown=0, NotChecked=0, Total=2450 [2022-03-15 14:38:51,109 INFO L87 Difference]: Start difference. First operand 5591 states and 15375 transitions. Second operand has 50 states, 50 states have (on average 6.02) internal successors, (301), 50 states have internal predecessors, (301), 0 states have call successors, (0), 0 states 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 14:38:52,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:52,098 INFO L93 Difference]: Finished difference Result 9832 states and 26297 transitions. [2022-03-15 14:38:52,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-15 14:38:52,099 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 6.02) internal successors, (301), 50 states have internal predecessors, (301), 0 states have call successors, (0), 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 141 [2022-03-15 14:38:52,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:52,113 INFO L225 Difference]: With dead ends: 9832 [2022-03-15 14:38:52,113 INFO L226 Difference]: Without dead ends: 9307 [2022-03-15 14:38:52,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 252 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2850 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1584, Invalid=5898, Unknown=0, NotChecked=0, Total=7482 [2022-03-15 14:38:52,115 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 2796 mSDsluCounter, 1878 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2796 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:52,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2796 Valid, 1894 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:38:52,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9307 states. [2022-03-15 14:38:52,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9307 to 4574. [2022-03-15 14:38:52,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4574 states, 4573 states have (on average 2.728187185654931) internal successors, (12476), 4573 states have internal predecessors, (12476), 0 states have call successors, (0), 0 states 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 14:38:52,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4574 states to 4574 states and 12476 transitions. [2022-03-15 14:38:52,220 INFO L78 Accepts]: Start accepts. Automaton has 4574 states and 12476 transitions. Word has length 141 [2022-03-15 14:38:52,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:52,220 INFO L470 AbstractCegarLoop]: Abstraction has 4574 states and 12476 transitions. [2022-03-15 14:38:52,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 6.02) internal successors, (301), 50 states have internal predecessors, (301), 0 states have call successors, (0), 0 states 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 14:38:52,221 INFO L276 IsEmpty]: Start isEmpty. Operand 4574 states and 12476 transitions. [2022-03-15 14:38:52,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-15 14:38:52,229 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:52,229 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:38:52,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-15 14:38:52,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:52,443 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:52,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:52,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1589161620, now seen corresponding path program 19 times [2022-03-15 14:38:52,444 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:52,444 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47380434] [2022-03-15 14:38:52,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:52,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:52,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:52,751 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 33 proven. 61 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-03-15 14:38:52,751 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:52,751 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47380434] [2022-03-15 14:38:52,751 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47380434] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:38:52,751 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467276587] [2022-03-15 14:38:52,751 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:38:52,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:52,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:38:52,756 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:38:52,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-15 14:38:52,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:52,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 14:38:52,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:38:53,654 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 48 proven. 46 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-03-15 14:38:53,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:38:54,432 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 44 proven. 50 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-03-15 14:38:54,432 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467276587] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:38:54,432 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:38:54,432 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 58 [2022-03-15 14:38:54,432 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347843565] [2022-03-15 14:38:54,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:38:54,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-03-15 14:38:54,433 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:54,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-03-15 14:38:54,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=642, Invalid=2664, Unknown=0, NotChecked=0, Total=3306 [2022-03-15 14:38:54,434 INFO L87 Difference]: Start difference. First operand 4574 states and 12476 transitions. Second operand has 58 states, 58 states have (on average 5.568965517241379) internal successors, (323), 58 states have internal predecessors, (323), 0 states have call successors, (0), 0 states 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 14:38:55,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:55,529 INFO L93 Difference]: Finished difference Result 3620 states and 9296 transitions. [2022-03-15 14:38:55,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-15 14:38:55,529 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 5.568965517241379) internal successors, (323), 58 states have internal predecessors, (323), 0 states have call successors, (0), 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 141 [2022-03-15 14:38:55,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:55,532 INFO L225 Difference]: With dead ends: 3620 [2022-03-15 14:38:55,532 INFO L226 Difference]: Without dead ends: 2537 [2022-03-15 14:38:55,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3125 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1721, Invalid=6651, Unknown=0, NotChecked=0, Total=8372 [2022-03-15 14:38:55,534 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 1212 mSDsluCounter, 2080 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 2099 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:55,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1212 Valid, 2099 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:38:55,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2537 states. [2022-03-15 14:38:55,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2537 to 2259. [2022-03-15 14:38:55,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2259 states, 2258 states have (on average 2.6266607617360496) internal successors, (5931), 2258 states have internal predecessors, (5931), 0 states have call successors, (0), 0 states 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 14:38:55,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2259 states to 2259 states and 5931 transitions. [2022-03-15 14:38:55,562 INFO L78 Accepts]: Start accepts. Automaton has 2259 states and 5931 transitions. Word has length 141 [2022-03-15 14:38:55,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:55,562 INFO L470 AbstractCegarLoop]: Abstraction has 2259 states and 5931 transitions. [2022-03-15 14:38:55,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 5.568965517241379) internal successors, (323), 58 states have internal predecessors, (323), 0 states have call successors, (0), 0 states 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 14:38:55,562 INFO L276 IsEmpty]: Start isEmpty. Operand 2259 states and 5931 transitions. [2022-03-15 14:38:55,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-15 14:38:55,566 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:55,566 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:38:55,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-15 14:38:55,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:55,780 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:55,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:55,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1333837113, now seen corresponding path program 20 times [2022-03-15 14:38:55,781 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:55,781 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623979972] [2022-03-15 14:38:55,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:55,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:56,343 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:56,343 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:56,343 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623979972] [2022-03-15 14:38:56,344 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623979972] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:38:56,344 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333216567] [2022-03-15 14:38:56,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:38:56,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:56,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:38:56,345 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:38:56,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-15 14:38:56,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:38:56,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:38:56,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 56 conjunts are in the unsatisfiable core [2022-03-15 14:38:56,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:38:57,285 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-03-15 14:38:57,313 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 143 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:38:57,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:38:57,472 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 14:38:57,472 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-03-15 14:38:57,890 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-15 14:38:57,890 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333216567] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:38:57,890 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:38:57,890 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 24, 15] total 57 [2022-03-15 14:38:57,890 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149348919] [2022-03-15 14:38:57,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:38:57,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-03-15 14:38:57,891 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:57,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-03-15 14:38:57,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2963, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 14:38:57,892 INFO L87 Difference]: Start difference. First operand 2259 states and 5931 transitions. Second operand has 57 states, 57 states have (on average 5.7368421052631575) internal successors, (327), 57 states have internal predecessors, (327), 0 states have call successors, (0), 0 states 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 14:39:01,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:01,983 INFO L93 Difference]: Finished difference Result 18188 states and 48276 transitions. [2022-03-15 14:39:01,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2022-03-15 14:39:01,983 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 5.7368421052631575) internal successors, (327), 57 states have internal predecessors, (327), 0 states have call successors, (0), 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 148 [2022-03-15 14:39:01,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:02,004 INFO L225 Difference]: With dead ends: 18188 [2022-03-15 14:39:02,004 INFO L226 Difference]: Without dead ends: 12909 [2022-03-15 14:39:02,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 258 SyntacticMatches, 12 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16850 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2746, Invalid=39484, Unknown=0, NotChecked=0, Total=42230 [2022-03-15 14:39:02,008 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 4243 mSDsluCounter, 7762 mSDsCounter, 0 mSdLazyCounter, 3238 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4243 SdHoareTripleChecker+Valid, 7385 SdHoareTripleChecker+Invalid, 3481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 3238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:39:02,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4243 Valid, 7385 Invalid, 3481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 3238 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 14:39:02,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12909 states. [2022-03-15 14:39:02,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12909 to 1130. [2022-03-15 14:39:02,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1129 states have (on average 2.4526129317980514) internal successors, (2769), 1129 states have internal predecessors, (2769), 0 states have call successors, (0), 0 states 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 14:39:02,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 2769 transitions. [2022-03-15 14:39:02,118 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 2769 transitions. Word has length 148 [2022-03-15 14:39:02,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:02,121 INFO L470 AbstractCegarLoop]: Abstraction has 1130 states and 2769 transitions. [2022-03-15 14:39:02,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 5.7368421052631575) internal successors, (327), 57 states have internal predecessors, (327), 0 states have call successors, (0), 0 states 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 14:39:02,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 2769 transitions. [2022-03-15 14:39:02,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-15 14:39:02,123 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:02,123 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:39:02,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-15 14:39:02,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-03-15 14:39:02,352 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:02,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:02,352 INFO L85 PathProgramCache]: Analyzing trace with hash -389869621, now seen corresponding path program 21 times [2022-03-15 14:39:02,352 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:02,352 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993048129] [2022-03-15 14:39:02,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:02,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:02,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:03,067 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:03,068 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:03,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993048129] [2022-03-15 14:39:03,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993048129] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:39:03,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128928098] [2022-03-15 14:39:03,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:39:03,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:39:03,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:39:03,069 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:39:03,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-15 14:39:03,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-03-15 14:39:03,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:39:03,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 55 conjunts are in the unsatisfiable core [2022-03-15 14:39:03,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:39:04,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 14:39:04,859 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-03-15 14:39:05,461 INFO L353 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2022-03-15 14:39:05,462 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-15 14:39:05,502 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 48 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:05,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:39:05,920 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:39:05,920 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 45 [2022-03-15 14:39:05,923 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-03-15 14:39:09,648 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 36 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:09,648 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128928098] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:39:09,648 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:39:09,648 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 37, 37] total 95 [2022-03-15 14:39:09,649 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864379333] [2022-03-15 14:39:09,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:39:09,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-03-15 14:39:09,649 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:09,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-03-15 14:39:09,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=771, Invalid=8159, Unknown=0, NotChecked=0, Total=8930 [2022-03-15 14:39:09,651 INFO L87 Difference]: Start difference. First operand 1130 states and 2769 transitions. Second operand has 95 states, 95 states have (on average 4.052631578947368) internal successors, (385), 95 states have internal predecessors, (385), 0 states have call successors, (0), 0 states 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 14:39:24,047 WARN L228 SmtUtils]: Spent 10.63s on a formula simplification. DAG size of input: 102 DAG size of output: 30 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-15 14:39:55,650 WARN L228 SmtUtils]: Spent 18.27s on a formula simplification. DAG size of input: 61 DAG size of output: 48 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-15 14:42:58,420 WARN L228 SmtUtils]: Spent 5.57s on a formula simplification. DAG size of input: 95 DAG size of output: 52 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-15 14:43:46,693 WARN L228 SmtUtils]: Spent 24.89s on a formula simplification. DAG size of input: 89 DAG size of output: 47 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-15 14:44:11,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:11,248 INFO L93 Difference]: Finished difference Result 127034 states and 320081 transitions. [2022-03-15 14:44:11,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 679 states. [2022-03-15 14:44:11,248 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 4.052631578947368) internal successors, (385), 95 states have internal predecessors, (385), 0 states have call successors, (0), 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 148 [2022-03-15 14:44:11,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:11,526 INFO L225 Difference]: With dead ends: 127034 [2022-03-15 14:44:11,527 INFO L226 Difference]: Without dead ends: 112901 [2022-03-15 14:44:11,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1724 GetRequests, 598 SyntacticMatches, 361 SemanticMatches, 765 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 406114 ImplicationChecksByTransitivity, 288.9s TimeCoverageRelationStatistics Valid=77110, Invalid=510338, Unknown=74, NotChecked=0, Total=587522 [2022-03-15 14:44:11,557 INFO L933 BasicCegarLoop]: 521 mSDtfsCounter, 8988 mSDsluCounter, 26535 mSDsCounter, 0 mSdLazyCounter, 3984 mSolverCounterSat, 702 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8988 SdHoareTripleChecker+Valid, 21562 SdHoareTripleChecker+Invalid, 28139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 702 IncrementalHoareTripleChecker+Valid, 3984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23453 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:11,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8988 Valid, 21562 Invalid, 28139 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [702 Valid, 3984 Invalid, 0 Unknown, 23453 Unchecked, 2.3s Time] [2022-03-15 14:44:11,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112901 states. [2022-03-15 14:44:13,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112901 to 48454. [2022-03-15 14:44:13,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48454 states, 48453 states have (on average 2.8188553856314367) internal successors, (136582), 48453 states have internal predecessors, (136582), 0 states have call successors, (0), 0 states 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 14:44:13,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48454 states to 48454 states and 136582 transitions. [2022-03-15 14:44:13,284 INFO L78 Accepts]: Start accepts. Automaton has 48454 states and 136582 transitions. Word has length 148 [2022-03-15 14:44:13,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:13,285 INFO L470 AbstractCegarLoop]: Abstraction has 48454 states and 136582 transitions. [2022-03-15 14:44:13,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 4.052631578947368) internal successors, (385), 95 states have internal predecessors, (385), 0 states have call successors, (0), 0 states 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 14:44:13,285 INFO L276 IsEmpty]: Start isEmpty. Operand 48454 states and 136582 transitions. [2022-03-15 14:44:13,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-15 14:44:13,361 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:13,361 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:13,378 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-03-15 14:44:13,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-03-15 14:44:13,562 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:13,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:13,563 INFO L85 PathProgramCache]: Analyzing trace with hash 726491987, now seen corresponding path program 22 times [2022-03-15 14:44:13,563 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:13,563 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765537288] [2022-03-15 14:44:13,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:13,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:14,337 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:14,337 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:14,337 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765537288] [2022-03-15 14:44:14,337 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765537288] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:44:14,337 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302970659] [2022-03-15 14:44:14,337 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:44:14,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:14,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:44:14,340 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:44:14,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-15 14:44:14,463 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:44:14,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:44:14,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 67 conjunts are in the unsatisfiable core [2022-03-15 14:44:14,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:44:16,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 14:44:16,190 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-03-15 14:44:16,464 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-03-15 14:44:16,483 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 143 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:44:16,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:44:16,727 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_760 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_760) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 16)))) is different from false [2022-03-15 14:44:16,739 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:44:16,739 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 47 [2022-03-15 14:44:16,743 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-03-15 14:44:17,531 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-15 14:44:17,531 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302970659] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:44:17,531 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:44:17,531 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 22] total 72 [2022-03-15 14:44:17,531 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524097597] [2022-03-15 14:44:17,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:44:17,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-03-15 14:44:17,532 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:17,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-03-15 14:44:17,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=4645, Unknown=1, NotChecked=138, Total=5112 [2022-03-15 14:44:17,533 INFO L87 Difference]: Start difference. First operand 48454 states and 136582 transitions. Second operand has 72 states, 72 states have (on average 4.708333333333333) internal successors, (339), 72 states have internal predecessors, (339), 0 states have call successors, (0), 0 states 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 14:44:20,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:20,624 INFO L93 Difference]: Finished difference Result 101149 states and 279214 transitions. [2022-03-15 14:44:20,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-03-15 14:44:20,624 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 4.708333333333333) internal successors, (339), 72 states have internal predecessors, (339), 0 states have call successors, (0), 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 148 [2022-03-15 14:44:20,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:21,061 INFO L225 Difference]: With dead ends: 101149 [2022-03-15 14:44:21,062 INFO L226 Difference]: Without dead ends: 101003 [2022-03-15 14:44:21,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 257 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 4962 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1150, Invalid=14855, Unknown=1, NotChecked=250, Total=16256 [2022-03-15 14:44:21,063 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 2314 mSDsluCounter, 5246 mSDsCounter, 0 mSdLazyCounter, 2506 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2314 SdHoareTripleChecker+Valid, 5140 SdHoareTripleChecker+Invalid, 3031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 2506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 366 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:21,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2314 Valid, 5140 Invalid, 3031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 2506 Invalid, 0 Unknown, 366 Unchecked, 0.9s Time] [2022-03-15 14:44:21,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101003 states. [2022-03-15 14:44:22,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101003 to 47775. [2022-03-15 14:44:22,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47775 states, 47774 states have (on average 2.8171390295976892) internal successors, (134586), 47774 states have internal predecessors, (134586), 0 states have call successors, (0), 0 states 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 14:44:22,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47775 states to 47775 states and 134586 transitions. [2022-03-15 14:44:22,513 INFO L78 Accepts]: Start accepts. Automaton has 47775 states and 134586 transitions. Word has length 148 [2022-03-15 14:44:22,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:22,514 INFO L470 AbstractCegarLoop]: Abstraction has 47775 states and 134586 transitions. [2022-03-15 14:44:22,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 4.708333333333333) internal successors, (339), 72 states have internal predecessors, (339), 0 states have call successors, (0), 0 states 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 14:44:22,514 INFO L276 IsEmpty]: Start isEmpty. Operand 47775 states and 134586 transitions. [2022-03-15 14:44:22,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-03-15 14:44:22,625 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:22,625 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:22,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-03-15 14:44:22,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-03-15 14:44:22,839 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:22,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:22,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1336735761, now seen corresponding path program 23 times [2022-03-15 14:44:22,840 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:22,840 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089647979] [2022-03-15 14:44:22,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:22,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:23,030 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-15 14:44:23,031 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:23,031 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089647979] [2022-03-15 14:44:23,031 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089647979] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:44:23,031 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721434215] [2022-03-15 14:44:23,031 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:44:23,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:23,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:44:23,032 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:44:23,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-15 14:44:23,250 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-03-15 14:44:23,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:44:23,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 14:44:23,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:44:23,511 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-15 14:44:23,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:44:23,775 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-15 14:44:23,775 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721434215] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:44:23,776 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:44:23,776 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 9 [2022-03-15 14:44:23,776 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401563677] [2022-03-15 14:44:23,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:44:23,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-15 14:44:23,776 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:23,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-15 14:44:23,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-03-15 14:44:23,777 INFO L87 Difference]: Start difference. First operand 47775 states and 134586 transitions. Second operand has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:24,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:24,357 INFO L93 Difference]: Finished difference Result 99981 states and 281996 transitions. [2022-03-15 14:44:24,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 14:44:24,358 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2022-03-15 14:44:24,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:24,610 INFO L225 Difference]: With dead ends: 99981 [2022-03-15 14:44:24,610 INFO L226 Difference]: Without dead ends: 95382 [2022-03-15 14:44:24,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 305 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-03-15 14:44:24,611 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 463 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:24,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 384 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:44:24,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95382 states. [2022-03-15 14:44:26,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95382 to 78538. [2022-03-15 14:44:26,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78538 states, 78537 states have (on average 2.8698193208296727) internal successors, (225387), 78537 states have internal predecessors, (225387), 0 states have call successors, (0), 0 states 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 14:44:26,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78538 states to 78538 states and 225387 transitions. [2022-03-15 14:44:26,628 INFO L78 Accepts]: Start accepts. Automaton has 78538 states and 225387 transitions. Word has length 151 [2022-03-15 14:44:26,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:26,628 INFO L470 AbstractCegarLoop]: Abstraction has 78538 states and 225387 transitions. [2022-03-15 14:44:26,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:26,628 INFO L276 IsEmpty]: Start isEmpty. Operand 78538 states and 225387 transitions. [2022-03-15 14:44:27,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-03-15 14:44:27,044 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:27,044 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:27,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-15 14:44:27,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:27,245 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:27,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:27,245 INFO L85 PathProgramCache]: Analyzing trace with hash -339287545, now seen corresponding path program 24 times [2022-03-15 14:44:27,245 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:27,245 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834969621] [2022-03-15 14:44:27,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:27,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:27,561 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 36 proven. 90 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-03-15 14:44:27,562 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:27,562 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834969621] [2022-03-15 14:44:27,562 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834969621] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:44:27,562 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038068617] [2022-03-15 14:44:27,562 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:44:27,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:27,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:44:27,563 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:44:27,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-15 14:44:28,050 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-03-15 14:44:28,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:44:28,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-15 14:44:28,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:44:28,766 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 51 proven. 75 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-03-15 14:44:28,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:44:29,700 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 36 proven. 90 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-03-15 14:44:29,701 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038068617] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:44:29,701 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:44:29,701 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 62 [2022-03-15 14:44:29,701 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042858305] [2022-03-15 14:44:29,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:44:29,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-03-15 14:44:29,701 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:29,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-03-15 14:44:29,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=601, Invalid=3181, Unknown=0, NotChecked=0, Total=3782 [2022-03-15 14:44:29,702 INFO L87 Difference]: Start difference. First operand 78538 states and 225387 transitions. Second operand has 62 states, 62 states have (on average 5.661290322580645) internal successors, (351), 62 states have internal predecessors, (351), 0 states have call successors, (0), 0 states 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 14:44:31,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:31,226 INFO L93 Difference]: Finished difference Result 83890 states and 221163 transitions. [2022-03-15 14:44:31,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-15 14:44:31,227 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 5.661290322580645) internal successors, (351), 62 states have internal predecessors, (351), 0 states have call successors, (0), 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 154 [2022-03-15 14:44:31,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:31,233 INFO L225 Difference]: With dead ends: 83890 [2022-03-15 14:44:31,233 INFO L226 Difference]: Without dead ends: 3259 [2022-03-15 14:44:31,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3311 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1596, Invalid=7146, Unknown=0, NotChecked=0, Total=8742 [2022-03-15 14:44:31,233 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 1143 mSDsluCounter, 4238 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 4157 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:31,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1143 Valid, 4157 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:44:31,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3259 states. [2022-03-15 14:44:31,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3259 to 2945. [2022-03-15 14:44:31,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2945 states, 2944 states have (on average 2.6426630434782608) internal successors, (7780), 2944 states have internal predecessors, (7780), 0 states have call successors, (0), 0 states 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 14:44:31,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2945 states to 2945 states and 7780 transitions. [2022-03-15 14:44:31,263 INFO L78 Accepts]: Start accepts. Automaton has 2945 states and 7780 transitions. Word has length 154 [2022-03-15 14:44:31,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:31,263 INFO L470 AbstractCegarLoop]: Abstraction has 2945 states and 7780 transitions. [2022-03-15 14:44:31,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 5.661290322580645) internal successors, (351), 62 states have internal predecessors, (351), 0 states have call successors, (0), 0 states 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 14:44:31,263 INFO L276 IsEmpty]: Start isEmpty. Operand 2945 states and 7780 transitions. [2022-03-15 14:44:31,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 14:44:31,266 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:31,266 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:31,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-15 14:44:31,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-03-15 14:44:31,467 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:31,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:31,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1063269874, now seen corresponding path program 25 times [2022-03-15 14:44:31,468 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:31,468 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554450002] [2022-03-15 14:44:31,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:31,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:31,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:31,883 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-03-15 14:44:31,883 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:31,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554450002] [2022-03-15 14:44:31,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554450002] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:44:31,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410278456] [2022-03-15 14:44:31,883 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:44:31,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:31,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:44:31,886 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:44:31,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-15 14:44:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:32,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 64 conjunts are in the unsatisfiable core [2022-03-15 14:44:32,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:44:33,115 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-03-15 14:44:33,145 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 211 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:44:33,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:44:33,353 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 14:44:33,353 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-03-15 14:44:33,889 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-03-15 14:44:33,889 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410278456] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:44:33,889 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:44:33,890 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 28, 17] total 56 [2022-03-15 14:44:33,890 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681571779] [2022-03-15 14:44:33,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:44:33,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-03-15 14:44:33,890 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:33,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-03-15 14:44:33,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=2879, Unknown=0, NotChecked=0, Total=3080 [2022-03-15 14:44:33,892 INFO L87 Difference]: Start difference. First operand 2945 states and 7780 transitions. Second operand has 56 states, 56 states have (on average 5.785714285714286) internal successors, (324), 56 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 14:44:38,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:38,707 INFO L93 Difference]: Finished difference Result 18756 states and 49842 transitions. [2022-03-15 14:44:38,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2022-03-15 14:44:38,707 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 5.785714285714286) internal successors, (324), 56 states have internal predecessors, (324), 0 states have call successors, (0), 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 161 [2022-03-15 14:44:38,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:38,728 INFO L225 Difference]: With dead ends: 18756 [2022-03-15 14:44:38,729 INFO L226 Difference]: Without dead ends: 14102 [2022-03-15 14:44:38,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 275 SyntacticMatches, 14 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13196 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2153, Invalid=33379, Unknown=0, NotChecked=0, Total=35532 [2022-03-15 14:44:38,731 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 4322 mSDsluCounter, 10634 mSDsCounter, 0 mSdLazyCounter, 4364 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4322 SdHoareTripleChecker+Valid, 9979 SdHoareTripleChecker+Invalid, 4609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 4364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:38,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4322 Valid, 9979 Invalid, 4609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 4364 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-15 14:44:38,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14102 states. [2022-03-15 14:44:38,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14102 to 1284. [2022-03-15 14:44:38,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 1283 states have (on average 2.4629773967264224) internal successors, (3160), 1283 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states 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 14:44:38,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 3160 transitions. [2022-03-15 14:44:38,795 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 3160 transitions. Word has length 161 [2022-03-15 14:44:38,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:38,795 INFO L470 AbstractCegarLoop]: Abstraction has 1284 states and 3160 transitions. [2022-03-15 14:44:38,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 5.785714285714286) internal successors, (324), 56 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 14:44:38,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 3160 transitions. [2022-03-15 14:44:38,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 14:44:38,797 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:38,797 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:38,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-15 14:44:38,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-03-15 14:44:38,997 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:38,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:38,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1212014386, now seen corresponding path program 26 times [2022-03-15 14:44:38,998 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:38,998 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515655424] [2022-03-15 14:44:38,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:38,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:39,473 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-03-15 14:44:39,473 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:39,473 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515655424] [2022-03-15 14:44:39,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515655424] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:44:39,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382610582] [2022-03-15 14:44:39,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:44:39,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:39,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:44:39,488 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:44:39,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-15 14:44:39,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:44:39,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:44:39,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 47 conjunts are in the unsatisfiable core [2022-03-15 14:44:39,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:44:40,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 14:44:40,455 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-03-15 14:44:40,669 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-03-15 14:44:40,697 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-03-15 14:44:40,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:44:40,903 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_929 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_929) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 20)) 5)) is different from false [2022-03-15 14:44:40,911 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:44:40,911 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 47 [2022-03-15 14:44:40,914 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-03-15 14:44:41,622 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-03-15 14:44:41,623 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382610582] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:44:41,623 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:44:41,623 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25, 24] total 61 [2022-03-15 14:44:41,623 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137578053] [2022-03-15 14:44:41,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:44:41,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-03-15 14:44:41,623 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:41,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-03-15 14:44:41,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=3331, Unknown=1, NotChecked=116, Total=3660 [2022-03-15 14:44:41,624 INFO L87 Difference]: Start difference. First operand 1284 states and 3160 transitions. Second operand has 61 states, 61 states have (on average 5.114754098360656) internal successors, (312), 61 states have internal predecessors, (312), 0 states have call successors, (0), 0 states 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 14:44:43,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:43,679 INFO L93 Difference]: Finished difference Result 3781 states and 9852 transitions. [2022-03-15 14:44:43,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-15 14:44:43,679 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 5.114754098360656) internal successors, (312), 61 states have internal predecessors, (312), 0 states have call successors, (0), 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 161 [2022-03-15 14:44:43,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:43,684 INFO L225 Difference]: With dead ends: 3781 [2022-03-15 14:44:43,684 INFO L226 Difference]: Without dead ends: 3651 [2022-03-15 14:44:43,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 286 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2593 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=702, Invalid=9201, Unknown=1, NotChecked=196, Total=10100 [2022-03-15 14:44:43,686 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 1982 mSDsluCounter, 4964 mSDsCounter, 0 mSdLazyCounter, 1816 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1982 SdHoareTripleChecker+Valid, 4814 SdHoareTripleChecker+Invalid, 2263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 318 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:43,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1982 Valid, 4814 Invalid, 2263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1816 Invalid, 0 Unknown, 318 Unchecked, 0.7s Time] [2022-03-15 14:44:43,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3651 states. [2022-03-15 14:44:43,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3651 to 1277. [2022-03-15 14:44:43,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 1276 states have (on average 2.4655172413793105) internal successors, (3146), 1276 states have internal predecessors, (3146), 0 states have call successors, (0), 0 states 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 14:44:43,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 3146 transitions. [2022-03-15 14:44:43,707 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 3146 transitions. Word has length 161 [2022-03-15 14:44:43,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:43,708 INFO L470 AbstractCegarLoop]: Abstraction has 1277 states and 3146 transitions. [2022-03-15 14:44:43,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 5.114754098360656) internal successors, (312), 61 states have internal predecessors, (312), 0 states have call successors, (0), 0 states 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 14:44:43,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 3146 transitions. [2022-03-15 14:44:43,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-03-15 14:44:43,710 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:43,710 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:43,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-03-15 14:44:43,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:43,912 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:43,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:43,912 INFO L85 PathProgramCache]: Analyzing trace with hash -630277180, now seen corresponding path program 27 times [2022-03-15 14:44:43,912 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:43,913 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875497989] [2022-03-15 14:44:43,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:43,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:44,017 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 70 proven. 51 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-03-15 14:44:44,017 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:44,017 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875497989] [2022-03-15 14:44:44,017 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875497989] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:44:44,018 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184826171] [2022-03-15 14:44:44,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:44:44,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:44,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:44:44,019 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:44:44,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-15 14:44:44,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-03-15 14:44:44,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:44:44,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 89 conjunts are in the unsatisfiable core [2022-03-15 14:44:44,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:44:45,364 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-15 14:44:45,657 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:44:45,757 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:44:47,496 INFO L353 Elim1Store]: treesize reduction 121, result has 2.4 percent of original size [2022-03-15 14:44:47,496 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 16 [2022-03-15 14:44:47,580 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 80 proven. 134 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-03-15 14:44:47,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:44:53,453 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:44:53,454 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 94 [2022-03-15 14:44:53,480 INFO L353 Elim1Store]: treesize reduction 87, result has 31.5 percent of original size [2022-03-15 14:44:53,480 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 688 treesize of output 643 [2022-03-15 14:44:53,494 INFO L353 Elim1Store]: treesize reduction 126, result has 0.8 percent of original size [2022-03-15 14:44:53,494 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 604 treesize of output 536 [2022-03-15 14:44:53,508 INFO L353 Elim1Store]: treesize reduction 126, result has 0.8 percent of original size [2022-03-15 14:44:53,508 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 536 treesize of output 400 [2022-03-15 14:44:55,005 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 13 proven. 201 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-03-15 14:44:55,006 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184826171] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:44:55,006 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:44:55,006 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 41, 38] total 81 [2022-03-15 14:44:55,006 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451017850] [2022-03-15 14:44:55,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:44:55,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-03-15 14:44:55,006 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:55,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-03-15 14:44:55,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=770, Invalid=5627, Unknown=83, NotChecked=0, Total=6480 [2022-03-15 14:44:55,007 INFO L87 Difference]: Start difference. First operand 1277 states and 3146 transitions. Second operand has 81 states, 81 states have (on average 4.925925925925926) internal successors, (399), 81 states have internal predecessors, (399), 0 states have call successors, (0), 0 states 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 14:46:15,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:15,512 INFO L93 Difference]: Finished difference Result 173192 states and 469416 transitions. [2022-03-15 14:46:15,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 848 states. [2022-03-15 14:46:15,512 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 4.925925925925926) internal successors, (399), 81 states have internal predecessors, (399), 0 states have call successors, (0), 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 164 [2022-03-15 14:46:15,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:16,028 INFO L225 Difference]: With dead ends: 173192 [2022-03-15 14:46:16,028 INFO L226 Difference]: Without dead ends: 142209 [2022-03-15 14:46:16,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1403 GetRequests, 482 SyntacticMatches, 5 SemanticMatches, 916 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364357 ImplicationChecksByTransitivity, 71.8s TimeCoverageRelationStatistics Valid=82468, Invalid=759245, Unknown=93, NotChecked=0, Total=841806 [2022-03-15 14:46:16,063 INFO L933 BasicCegarLoop]: 1280 mSDtfsCounter, 11275 mSDsluCounter, 42165 mSDsCounter, 0 mSdLazyCounter, 4997 mSolverCounterSat, 761 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11275 SdHoareTripleChecker+Valid, 40281 SdHoareTripleChecker+Invalid, 35840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 761 IncrementalHoareTripleChecker+Valid, 4997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30082 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:16,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11275 Valid, 40281 Invalid, 35840 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [761 Valid, 4997 Invalid, 0 Unknown, 30082 Unchecked, 2.8s Time] [2022-03-15 14:46:16,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142209 states. [2022-03-15 14:46:18,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142209 to 58625. [2022-03-15 14:46:18,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58625 states, 58624 states have (on average 2.933627865720524) internal successors, (171981), 58624 states have internal predecessors, (171981), 0 states have call successors, (0), 0 states 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 14:46:18,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58625 states to 58625 states and 171981 transitions. [2022-03-15 14:46:18,239 INFO L78 Accepts]: Start accepts. Automaton has 58625 states and 171981 transitions. Word has length 164 [2022-03-15 14:46:18,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:18,239 INFO L470 AbstractCegarLoop]: Abstraction has 58625 states and 171981 transitions. [2022-03-15 14:46:18,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 4.925925925925926) internal successors, (399), 81 states have internal predecessors, (399), 0 states have call successors, (0), 0 states 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 14:46:18,239 INFO L276 IsEmpty]: Start isEmpty. Operand 58625 states and 171981 transitions. [2022-03-15 14:46:18,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-03-15 14:46:18,325 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:18,325 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:46:18,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-03-15 14:46:18,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:18,526 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:18,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:18,526 INFO L85 PathProgramCache]: Analyzing trace with hash -677943228, now seen corresponding path program 28 times [2022-03-15 14:46:18,526 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:18,526 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133061076] [2022-03-15 14:46:18,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:18,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:18,626 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 70 proven. 51 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-03-15 14:46:18,626 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:18,626 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133061076] [2022-03-15 14:46:18,626 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133061076] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:46:18,626 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570448033] [2022-03-15 14:46:18,626 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:46:18,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:18,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:46:18,632 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:46:18,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-15 14:46:18,760 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:46:18,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:46:18,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:46:18,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:46:18,991 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 70 proven. 51 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-03-15 14:46:18,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:46:19,223 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 70 proven. 51 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-03-15 14:46:19,223 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570448033] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:46:19,223 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:46:19,223 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 10 [2022-03-15 14:46:19,224 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312928552] [2022-03-15 14:46:19,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:46:19,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 14:46:19,224 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:19,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 14:46:19,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2022-03-15 14:46:19,224 INFO L87 Difference]: Start difference. First operand 58625 states and 171981 transitions. Second operand has 10 states, 10 states have (on average 18.8) internal successors, (188), 10 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:19,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:19,983 INFO L93 Difference]: Finished difference Result 101011 states and 295313 transitions. [2022-03-15 14:46:19,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 14:46:19,983 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.8) internal successors, (188), 10 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2022-03-15 14:46:19,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:20,506 INFO L225 Difference]: With dead ends: 101011 [2022-03-15 14:46:20,507 INFO L226 Difference]: Without dead ends: 98394 [2022-03-15 14:46:20,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 332 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2022-03-15 14:46:20,507 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 396 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:20,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 454 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:46:20,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98394 states. [2022-03-15 14:46:21,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98394 to 84313. [2022-03-15 14:46:22,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84313 states, 84312 states have (on average 2.9820073061960337) internal successors, (251419), 84312 states have internal predecessors, (251419), 0 states have call successors, (0), 0 states 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 14:46:22,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84313 states to 84313 states and 251419 transitions. [2022-03-15 14:46:22,604 INFO L78 Accepts]: Start accepts. Automaton has 84313 states and 251419 transitions. Word has length 164 [2022-03-15 14:46:22,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:22,605 INFO L470 AbstractCegarLoop]: Abstraction has 84313 states and 251419 transitions. [2022-03-15 14:46:22,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.8) internal successors, (188), 10 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:22,605 INFO L276 IsEmpty]: Start isEmpty. Operand 84313 states and 251419 transitions. [2022-03-15 14:46:22,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-03-15 14:46:22,719 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:22,719 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:46:22,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-03-15 14:46:22,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:22,921 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:22,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:22,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1621234450, now seen corresponding path program 29 times [2022-03-15 14:46:22,922 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:22,922 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353757088] [2022-03-15 14:46:22,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:22,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:22,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:23,268 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 52 proven. 129 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-03-15 14:46:23,269 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:23,269 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353757088] [2022-03-15 14:46:23,269 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353757088] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:46:23,269 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642666778] [2022-03-15 14:46:23,269 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:46:23,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:23,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:46:23,270 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:46:23,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-15 14:46:23,753 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-03-15 14:46:23,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:46:23,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-15 14:46:23,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:46:24,785 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 70 proven. 111 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-03-15 14:46:24,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:46:25,795 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 52 proven. 129 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-03-15 14:46:25,796 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642666778] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:46:25,796 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:46:25,796 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 73 [2022-03-15 14:46:25,796 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801658668] [2022-03-15 14:46:25,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:46:25,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-03-15 14:46:25,797 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:25,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-03-15 14:46:25,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=973, Invalid=4283, Unknown=0, NotChecked=0, Total=5256 [2022-03-15 14:46:25,798 INFO L87 Difference]: Start difference. First operand 84313 states and 251419 transitions. Second operand has 73 states, 73 states have (on average 5.123287671232877) internal successors, (374), 73 states have internal predecessors, (374), 0 states have call successors, (0), 0 states 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 14:46:27,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:27,783 INFO L93 Difference]: Finished difference Result 13874 states and 37000 transitions. [2022-03-15 14:46:27,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-15 14:46:27,783 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 5.123287671232877) internal successors, (374), 73 states have internal predecessors, (374), 0 states have call successors, (0), 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 167 [2022-03-15 14:46:27,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:27,794 INFO L225 Difference]: With dead ends: 13874 [2022-03-15 14:46:27,794 INFO L226 Difference]: Without dead ends: 7358 [2022-03-15 14:46:27,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5836 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3059, Invalid=12441, Unknown=0, NotChecked=0, Total=15500 [2022-03-15 14:46:27,796 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 1677 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1677 SdHoareTripleChecker+Valid, 2467 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:27,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1677 Valid, 2467 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:46:27,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7358 states. [2022-03-15 14:46:27,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7358 to 6792. [2022-03-15 14:46:27,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6792 states, 6791 states have (on average 2.8093064349874832) internal successors, (19078), 6791 states have internal predecessors, (19078), 0 states have call successors, (0), 0 states 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 14:46:27,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6792 states to 6792 states and 19078 transitions. [2022-03-15 14:46:27,903 INFO L78 Accepts]: Start accepts. Automaton has 6792 states and 19078 transitions. Word has length 167 [2022-03-15 14:46:27,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:27,903 INFO L470 AbstractCegarLoop]: Abstraction has 6792 states and 19078 transitions. [2022-03-15 14:46:27,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 5.123287671232877) internal successors, (374), 73 states have internal predecessors, (374), 0 states have call successors, (0), 0 states 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 14:46:27,904 INFO L276 IsEmpty]: Start isEmpty. Operand 6792 states and 19078 transitions. [2022-03-15 14:46:27,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-03-15 14:46:27,912 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:27,912 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:46:27,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-03-15 14:46:28,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:28,113 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:28,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:28,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1049547545, now seen corresponding path program 30 times [2022-03-15 14:46:28,113 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:28,113 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156745135] [2022-03-15 14:46:28,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:28,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:28,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:28,922 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:28,922 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:28,922 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156745135] [2022-03-15 14:46:28,922 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156745135] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:46:28,922 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682090314] [2022-03-15 14:46:28,922 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:46:28,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:28,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:46:28,924 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:46:28,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-15 14:46:29,252 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-03-15 14:46:29,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:46:29,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-15 14:46:29,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:46:32,265 INFO L353 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2022-03-15 14:46:32,265 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-15 14:46:32,294 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 49 proven. 179 refuted. 3 times theorem prover too weak. 63 trivial. 0 not checked. [2022-03-15 14:46:32,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:46:32,847 INFO L353 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2022-03-15 14:46:32,847 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2022-03-15 14:46:34,068 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 45 proven. 186 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-03-15 14:46:34,069 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682090314] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:46:34,069 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:46:34,069 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 31, 31] total 89 [2022-03-15 14:46:34,069 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629197477] [2022-03-15 14:46:34,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:46:34,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-03-15 14:46:34,070 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:34,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-03-15 14:46:34,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=858, Invalid=6973, Unknown=1, NotChecked=0, Total=7832 [2022-03-15 14:46:34,071 INFO L87 Difference]: Start difference. First operand 6792 states and 19078 transitions. Second operand has 89 states, 89 states have (on average 4.674157303370786) internal successors, (416), 89 states have internal predecessors, (416), 0 states have call successors, (0), 0 states 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 14:46:45,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:45,401 INFO L93 Difference]: Finished difference Result 32638 states and 89227 transitions. [2022-03-15 14:46:45,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2022-03-15 14:46:45,402 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 4.674157303370786) internal successors, (416), 89 states have internal predecessors, (416), 0 states have call successors, (0), 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 174 [2022-03-15 14:46:45,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:45,456 INFO L225 Difference]: With dead ends: 32638 [2022-03-15 14:46:45,456 INFO L226 Difference]: Without dead ends: 32353 [2022-03-15 14:46:45,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 378 SyntacticMatches, 2 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19249 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=4931, Invalid=47736, Unknown=3, NotChecked=0, Total=52670 [2022-03-15 14:46:45,458 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 3940 mSDsluCounter, 13701 mSDsCounter, 0 mSdLazyCounter, 2946 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3940 SdHoareTripleChecker+Valid, 13205 SdHoareTripleChecker+Invalid, 5484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 2946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2385 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:45,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3940 Valid, 13205 Invalid, 5484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 2946 Invalid, 0 Unknown, 2385 Unchecked, 1.1s Time] [2022-03-15 14:46:45,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32353 states. [2022-03-15 14:46:45,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32353 to 16792. [2022-03-15 14:46:45,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16792 states, 16791 states have (on average 2.88595080697993) internal successors, (48458), 16791 states have internal predecessors, (48458), 0 states have call successors, (0), 0 states 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 14:46:45,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16792 states to 16792 states and 48458 transitions. [2022-03-15 14:46:45,911 INFO L78 Accepts]: Start accepts. Automaton has 16792 states and 48458 transitions. Word has length 174 [2022-03-15 14:46:45,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:45,911 INFO L470 AbstractCegarLoop]: Abstraction has 16792 states and 48458 transitions. [2022-03-15 14:46:45,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 4.674157303370786) internal successors, (416), 89 states have internal predecessors, (416), 0 states have call successors, (0), 0 states 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 14:46:45,912 INFO L276 IsEmpty]: Start isEmpty. Operand 16792 states and 48458 transitions. [2022-03-15 14:46:45,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-03-15 14:46:45,934 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:45,934 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:46:45,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-03-15 14:46:46,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-03-15 14:46:46,135 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:46,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:46,135 INFO L85 PathProgramCache]: Analyzing trace with hash 318915571, now seen corresponding path program 31 times [2022-03-15 14:46:46,136 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:46,136 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674452387] [2022-03-15 14:46:46,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:46,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:46,853 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:46,853 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:46,853 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674452387] [2022-03-15 14:46:46,853 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674452387] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:46:46,853 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180643565] [2022-03-15 14:46:46,853 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:46:46,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:46,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:46:46,854 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:46:46,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-15 14:46:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:46,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 72 conjunts are in the unsatisfiable core [2022-03-15 14:46:46,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:46:48,203 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-03-15 14:46:48,223 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 292 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:46:48,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:46:48,488 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 14:46:48,488 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-03-15 14:46:49,176 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-03-15 14:46:49,176 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180643565] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:46:49,176 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:46:49,176 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 32, 19] total 77 [2022-03-15 14:46:49,177 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490606181] [2022-03-15 14:46:49,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:46:49,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-03-15 14:46:49,177 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:49,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-03-15 14:46:49,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=5539, Unknown=0, NotChecked=0, Total=5852 [2022-03-15 14:46:49,178 INFO L87 Difference]: Start difference. First operand 16792 states and 48458 transitions. Second operand has 77 states, 77 states have (on average 5.233766233766234) internal successors, (403), 77 states have internal predecessors, (403), 0 states have call successors, (0), 0 states 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 14:46:59,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:59,393 INFO L93 Difference]: Finished difference Result 98755 states and 274482 transitions. [2022-03-15 14:46:59,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 260 states. [2022-03-15 14:46:59,394 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 5.233766233766234) internal successors, (403), 77 states have internal predecessors, (403), 0 states have call successors, (0), 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 174 [2022-03-15 14:46:59,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:59,569 INFO L225 Difference]: With dead ends: 98755 [2022-03-15 14:46:59,569 INFO L226 Difference]: Without dead ends: 87237 [2022-03-15 14:46:59,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 294 SyntacticMatches, 16 SemanticMatches, 324 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43776 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=5910, Invalid=100040, Unknown=0, NotChecked=0, Total=105950 [2022-03-15 14:46:59,573 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 8951 mSDsluCounter, 16552 mSDsCounter, 0 mSdLazyCounter, 7109 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8951 SdHoareTripleChecker+Valid, 15394 SdHoareTripleChecker+Invalid, 7632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 7109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:59,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8951 Valid, 15394 Invalid, 7632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [523 Valid, 7109 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-03-15 14:46:59,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87237 states. [2022-03-15 14:47:00,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87237 to 5527. [2022-03-15 14:47:00,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5527 states, 5526 states have (on average 2.678248280854144) internal successors, (14800), 5526 states have internal predecessors, (14800), 0 states have call successors, (0), 0 states 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 14:47:00,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5527 states to 5527 states and 14800 transitions. [2022-03-15 14:47:00,064 INFO L78 Accepts]: Start accepts. Automaton has 5527 states and 14800 transitions. Word has length 174 [2022-03-15 14:47:00,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:00,064 INFO L470 AbstractCegarLoop]: Abstraction has 5527 states and 14800 transitions. [2022-03-15 14:47:00,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 5.233766233766234) internal successors, (403), 77 states have internal predecessors, (403), 0 states have call successors, (0), 0 states 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 14:47:00,065 INFO L276 IsEmpty]: Start isEmpty. Operand 5527 states and 14800 transitions. [2022-03-15 14:47:00,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-03-15 14:47:00,070 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:00,070 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:47:00,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-03-15 14:47:00,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:47:00,279 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:00,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:00,279 INFO L85 PathProgramCache]: Analyzing trace with hash -550410261, now seen corresponding path program 32 times [2022-03-15 14:47:00,279 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:00,280 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734384407] [2022-03-15 14:47:00,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:00,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:01,330 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:01,330 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:01,330 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734384407] [2022-03-15 14:47:01,330 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734384407] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:47:01,331 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256088765] [2022-03-15 14:47:01,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:47:01,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:47:01,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:47:01,332 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:47:01,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-15 14:47:01,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:47:01,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:47:01,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 51 conjunts are in the unsatisfiable core [2022-03-15 14:47:01,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:47:02,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 14:47:02,625 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-03-15 14:47:02,929 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-03-15 14:47:02,957 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-03-15 14:47:02,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:47:03,254 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1210 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1210) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 24)))) is different from false [2022-03-15 14:47:03,262 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:47:03,262 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 47 [2022-03-15 14:47:03,265 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-03-15 14:47:04,149 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-03-15 14:47:04,149 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256088765] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:47:04,149 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:47:04,149 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 27, 26] total 80 [2022-03-15 14:47:04,149 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377548503] [2022-03-15 14:47:04,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:47:04,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-03-15 14:47:04,155 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:04,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-03-15 14:47:04,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=5860, Unknown=1, NotChecked=154, Total=6320 [2022-03-15 14:47:04,156 INFO L87 Difference]: Start difference. First operand 5527 states and 14800 transitions. Second operand has 80 states, 80 states have (on average 4.375) internal successors, (350), 80 states have internal predecessors, (350), 0 states have call successors, (0), 0 states 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 14:47:09,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:09,176 INFO L93 Difference]: Finished difference Result 15196 states and 41227 transitions. [2022-03-15 14:47:09,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-03-15 14:47:09,176 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 4.375) internal successors, (350), 80 states have internal predecessors, (350), 0 states have call successors, (0), 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 174 [2022-03-15 14:47:09,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:09,200 INFO L225 Difference]: With dead ends: 15196 [2022-03-15 14:47:09,200 INFO L226 Difference]: Without dead ends: 15034 [2022-03-15 14:47:09,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 308 SyntacticMatches, 2 SemanticMatches, 149 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6270 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1448, Invalid=20905, Unknown=1, NotChecked=296, Total=22650 [2022-03-15 14:47:09,202 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 3291 mSDsluCounter, 10858 mSDsCounter, 0 mSdLazyCounter, 5190 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3291 SdHoareTripleChecker+Valid, 10368 SdHoareTripleChecker+Invalid, 5894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 5190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 455 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:09,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3291 Valid, 10368 Invalid, 5894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 5190 Invalid, 0 Unknown, 455 Unchecked, 1.9s Time] [2022-03-15 14:47:09,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15034 states. [2022-03-15 14:47:09,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15034 to 5490. [2022-03-15 14:47:09,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5490 states, 5489 states have (on average 2.6760794315904537) internal successors, (14689), 5489 states have internal predecessors, (14689), 0 states have call successors, (0), 0 states 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 14:47:09,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5490 states to 5490 states and 14689 transitions. [2022-03-15 14:47:09,314 INFO L78 Accepts]: Start accepts. Automaton has 5490 states and 14689 transitions. Word has length 174 [2022-03-15 14:47:09,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:09,314 INFO L470 AbstractCegarLoop]: Abstraction has 5490 states and 14689 transitions. [2022-03-15 14:47:09,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 4.375) internal successors, (350), 80 states have internal predecessors, (350), 0 states have call successors, (0), 0 states 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 14:47:09,315 INFO L276 IsEmpty]: Start isEmpty. Operand 5490 states and 14689 transitions. [2022-03-15 14:47:09,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:47:09,320 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:09,320 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:47:09,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-15 14:47:09,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:47:09,521 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:09,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:09,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1741723185, now seen corresponding path program 33 times [2022-03-15 14:47:09,521 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:09,522 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943171987] [2022-03-15 14:47:09,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:09,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:09,619 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 92 proven. 70 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-03-15 14:47:09,620 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:09,620 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943171987] [2022-03-15 14:47:09,620 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943171987] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:47:09,620 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888049672] [2022-03-15 14:47:09,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:47:09,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:47:09,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:47:09,621 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:47:09,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-15 14:47:10,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-03-15 14:47:10,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:47:10,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 110 conjunts are in the unsatisfiable core [2022-03-15 14:47:10,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:47:11,239 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-15 14:47:11,515 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:47:11,596 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:47:13,079 INFO L353 Elim1Store]: treesize reduction 142, result has 2.1 percent of original size [2022-03-15 14:47:13,080 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 52 treesize of output 19 [2022-03-15 14:47:13,162 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 48 proven. 238 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-03-15 14:47:13,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:47:17,280 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:47:17,281 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 165 treesize of output 117 [2022-03-15 14:47:17,317 INFO L353 Elim1Store]: treesize reduction 170, result has 23.1 percent of original size [2022-03-15 14:47:17,317 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 416 treesize of output 411 [2022-03-15 14:47:17,330 INFO L353 Elim1Store]: treesize reduction 220, result has 0.5 percent of original size [2022-03-15 14:47:17,331 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 361 treesize of output 271 [2022-03-15 14:47:17,344 INFO L353 Elim1Store]: treesize reduction 220, result has 0.5 percent of original size [2022-03-15 14:47:17,344 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 250 treesize of output 205 [2022-03-15 14:47:19,180 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 15 proven. 283 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-03-15 14:47:19,180 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888049672] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:47:19,180 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:47:19,180 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 44, 42] total 90 [2022-03-15 14:47:19,180 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146268685] [2022-03-15 14:47:19,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:47:19,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-03-15 14:47:19,181 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:19,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-03-15 14:47:19,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1197, Invalid=6715, Unknown=98, NotChecked=0, Total=8010 [2022-03-15 14:47:19,183 INFO L87 Difference]: Start difference. First operand 5490 states and 14689 transitions. Second operand has 90 states, 90 states have (on average 4.8) internal successors, (432), 90 states have internal predecessors, (432), 0 states have call successors, (0), 0 states 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 14:47:23,561 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse15 (+ c_~size~0 c_~front~0))) (let ((.cse14 (and (or (<= c_~n~0 (+ c_~size~0 6 c_~front~0)) (<= .cse15 0)) (or (<= c_~n~0 (+ 7 c_~size~0 c_~front~0)) (<= c_~n~0 3)))) (.cse0 (select |c_#memory_int| c_~queue~0.base)) (.cse2 (* c_~front~0 4))) (and (let ((.cse1 (* c_~size~0 4))) (or (forall ((v_~front~0_326 Int)) (or (< (+ v_~front~0_326 1) 0) (= 5 (select (select |c_#memory_int| c_~queue~0.base) (+ (* v_~front~0_326 4) c_~queue~0.offset 16))) (<= c_~n~0 (+ v_~front~0_326 4)))) (not (= 5 (select .cse0 (+ .cse1 c_~queue~0.offset .cse2 16)))) (not (= 5 (select .cse0 (+ .cse1 c_~queue~0.offset .cse2 12)))) (forall ((v_~size~0_555 Int) (v_~size~0_554 Int)) (let ((.cse5 (+ v_~size~0_554 c_~front~0)) (.cse3 (select |c_#memory_int| c_~queue~0.base)) (.cse4 (* c_~front~0 4))) (or (not (= 5 (select .cse3 (+ (* v_~size~0_554 4) c_~queue~0.offset .cse4)))) (not (<= (+ v_~size~0_555 1) v_~size~0_554)) (not (<= (+ c_~size~0 5) v_~size~0_555)) (not (< .cse5 c_~n~0)) (not (<= 0 .cse5)) (not (= 5 (select .cse3 (+ c_~queue~0.offset .cse4 (* v_~size~0_555 4)))))))))) (forall ((v_~front~0_326 Int) (v_~size~0_555 Int) (v_~size~0_554 Int) (v_ArrVal_1262 (Array Int Int)) (v_ArrVal_1261 (Array Int Int))) (let ((.cse6 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1261) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1262) c_~queue~0.base)) (.cse8 (* c_~size~0 4)) (.cse7 (* c_~front~0 4)) (.cse9 (+ v_~size~0_554 c_~front~0))) (or (not (= 5 (select .cse6 (+ (* v_~size~0_554 4) c_~queue~0.offset .cse7)))) (= 5 (select .cse6 (+ (* v_~front~0_326 4) c_~queue~0.offset 16))) (< (+ v_~front~0_326 1) 0) (not (<= (+ v_~size~0_555 1) v_~size~0_554)) (not (= (select .cse6 (+ .cse8 c_~queue~0.offset .cse7 12)) 5)) (not (<= (+ c_~size~0 5) v_~size~0_555)) (<= c_~n~0 (+ v_~front~0_326 4)) (not (= (select .cse6 (+ c_~queue~0.offset .cse7 (* v_~size~0_555 4))) 5)) (not (< .cse9 c_~n~0)) (not (= 5 (select .cse6 (+ .cse8 c_~queue~0.offset .cse7 16)))) (not (<= 0 .cse9))))) (forall ((v_~front~0_326 Int) (v_~size~0_555 Int) (v_~size~0_554 Int) (v_ArrVal_1262 (Array Int Int)) (v_ArrVal_1261 (Array Int Int))) (let ((.cse12 (* c_~size~0 4)) (.cse13 (+ v_~size~0_554 c_~front~0)) (.cse10 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1261) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1262) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse11 (* c_~front~0 4))) (or (= 5 (select .cse10 (+ (* v_~front~0_326 4) 16 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (< (+ v_~front~0_326 1) 0) (not (<= (+ v_~size~0_555 1) v_~size~0_554)) (not (<= (+ c_~size~0 5) v_~size~0_555)) (<= c_~n~0 (+ v_~front~0_326 4)) (not (= (select .cse10 (+ .cse11 (* v_~size~0_555 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 5)) (not (= (select .cse10 (+ .cse12 .cse11 12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 5)) (not (< .cse13 c_~n~0)) (not (= (select .cse10 (+ .cse12 .cse11 16 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 5)) (not (<= 0 .cse13)) (not (= (select .cse10 (+ (* v_~size~0_554 4) .cse11 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 5))))) (or .cse14 (< (+ 7 |c_ULTIMATE.start_create_fresh_int_array_#t~post17#1|) |c_ULTIMATE.start_create_fresh_int_array_~size#1|)) (<= 0 .cse15) (<= c_~size~0 3) (let ((.cse16 (+ 2 c_~front~0))) (or (< .cse16 0) (<= c_~n~0 .cse16) (= (select .cse0 (+ c_~queue~0.offset .cse2 8)) 5))) (or (< 7 |c_ULTIMATE.start_create_fresh_int_array_~size#1|) .cse14) (forall ((v_~front~0_326 Int) (v_~size~0_555 Int) (v_~size~0_554 Int) (v_ArrVal_1262 (Array Int Int))) (let ((.cse20 (+ v_~size~0_554 c_~front~0)) (.cse18 (* c_~size~0 4)) (.cse17 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1262) c_~queue~0.base)) (.cse19 (* c_~front~0 4))) (or (< (+ v_~front~0_326 1) 0) (not (<= (+ v_~size~0_555 1) v_~size~0_554)) (not (= 5 (select .cse17 (+ .cse18 c_~queue~0.offset .cse19 16)))) (not (<= (+ c_~size~0 5) v_~size~0_555)) (<= c_~n~0 (+ v_~front~0_326 4)) (not (= 5 (select .cse17 (+ c_~queue~0.offset .cse19 (* v_~size~0_555 4))))) (not (< .cse20 c_~n~0)) (= 5 (select .cse17 (+ (* v_~front~0_326 4) c_~queue~0.offset 16))) (not (<= 0 .cse20)) (not (= (select .cse17 (+ .cse18 c_~queue~0.offset .cse19 12)) 5)) (not (= 5 (select .cse17 (+ (* v_~size~0_554 4) c_~queue~0.offset .cse19))))))) (forall ((v_~front~0_326 Int) (v_~size~0_555 Int) (v_~size~0_554 Int) (v_ArrVal_1262 (Array Int Int)) (v_ArrVal_1261 (Array Int Int))) (let ((.cse24 (* c_~size~0 4)) (.cse22 (* c_~front~0 4)) (.cse23 (+ v_~size~0_554 c_~front~0)) (.cse21 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1261) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1262) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|))) (or (not (= 5 (select .cse21 (+ .cse22 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset| (* v_~size~0_555 4))))) (not (= 5 (select .cse21 (+ (* v_~size~0_554 4) .cse22 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)))) (< (+ v_~front~0_326 1) 0) (not (<= (+ v_~size~0_555 1) v_~size~0_554)) (not (<= (+ c_~size~0 5) v_~size~0_555)) (<= c_~n~0 (+ v_~front~0_326 4)) (not (< .cse23 c_~n~0)) (not (= 5 (select .cse21 (+ .cse24 .cse22 16 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)))) (not (= 5 (select .cse21 (+ .cse24 .cse22 12 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)))) (not (<= 0 .cse23)) (= (select .cse21 (+ (* v_~front~0_326 4) 16 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)) 5)))) (or .cse14 (< (+ 7 |c_ULTIMATE.start_create_fresh_int_array_~i~0#1|) |c_ULTIMATE.start_create_fresh_int_array_~size#1|)) (= 5 c_~x~0) (= c_~front~0 0) (forall ((v_~front~0_326 Int) (v_~size~0_555 Int) (v_~size~0_554 Int) (v_ArrVal_1262 (Array Int Int)) (v_ArrVal_1261 (Array Int Int))) (let ((.cse26 (* c_~size~0 4)) (.cse27 (* c_~front~0 4)) (.cse25 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1261) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1262) |c_ULTIMATE.start_main_#t~ret9#1.base|)) (.cse28 (+ v_~size~0_554 c_~front~0))) (or (not (= (select .cse25 (+ .cse26 .cse27 12 |c_ULTIMATE.start_main_#t~ret9#1.offset|)) 5)) (not (= (select .cse25 (+ .cse26 .cse27 16 |c_ULTIMATE.start_main_#t~ret9#1.offset|)) 5)) (not (= 5 (select .cse25 (+ .cse27 |c_ULTIMATE.start_main_#t~ret9#1.offset| (* v_~size~0_555 4))))) (not (= 5 (select .cse25 (+ (* v_~size~0_554 4) .cse27 |c_ULTIMATE.start_main_#t~ret9#1.offset|)))) (< (+ v_~front~0_326 1) 0) (not (<= (+ v_~size~0_555 1) v_~size~0_554)) (not (<= (+ c_~size~0 5) v_~size~0_555)) (<= c_~n~0 (+ v_~front~0_326 4)) (not (< .cse28 c_~n~0)) (= 5 (select .cse25 (+ (* v_~front~0_326 4) 16 |c_ULTIMATE.start_main_#t~ret9#1.offset|))) (not (<= 0 .cse28))))) (or (= (select .cse0 (+ c_~queue~0.offset .cse2)) 5) (<= c_~n~0 c_~front~0) (< c_~front~0 0)) (let ((.cse29 (+ c_~front~0 1))) (or (= 5 (select .cse0 (+ c_~queue~0.offset .cse2 4))) (< .cse29 0) (<= c_~n~0 .cse29)))))) is different from false [2022-03-15 14:47:26,075 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse16 (+ c_~size~0 c_~front~0))) (let ((.cse2 (* c_~size~0 4)) (.cse0 (forall ((v_~front~0_326 Int)) (or (< (+ v_~front~0_326 1) 0) (= 5 (select (select |c_#memory_int| c_~queue~0.base) (+ (* v_~front~0_326 4) c_~queue~0.offset 16))) (<= c_~n~0 (+ v_~front~0_326 4))))) (.cse15 (and (or (<= c_~n~0 (+ c_~size~0 6 c_~front~0)) (<= .cse16 0)) (or (<= c_~n~0 (+ 7 c_~size~0 c_~front~0)) (<= c_~n~0 3)))) (.cse1 (select |c_#memory_int| c_~queue~0.base)) (.cse3 (* c_~front~0 4))) (and (or .cse0 (not (= 5 (select .cse1 (+ .cse2 c_~queue~0.offset .cse3 16)))) (not (= 5 (select .cse1 (+ .cse2 c_~queue~0.offset .cse3 12)))) (forall ((v_~size~0_555 Int) (v_~size~0_554 Int)) (let ((.cse6 (+ v_~size~0_554 c_~front~0)) (.cse4 (select |c_#memory_int| c_~queue~0.base)) (.cse5 (* c_~front~0 4))) (or (not (= 5 (select .cse4 (+ (* v_~size~0_554 4) c_~queue~0.offset .cse5)))) (not (<= (+ v_~size~0_555 1) v_~size~0_554)) (not (<= (+ c_~size~0 5) v_~size~0_555)) (not (< .cse6 c_~n~0)) (not (<= 0 .cse6)) (not (= 5 (select .cse4 (+ c_~queue~0.offset .cse5 (* v_~size~0_555 4))))))))) (forall ((v_~front~0_326 Int) (v_~size~0_555 Int) (v_~size~0_554 Int) (v_ArrVal_1262 (Array Int Int)) (v_ArrVal_1261 (Array Int Int))) (let ((.cse7 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1261) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1262) c_~queue~0.base)) (.cse9 (* c_~size~0 4)) (.cse8 (* c_~front~0 4)) (.cse10 (+ v_~size~0_554 c_~front~0))) (or (not (= 5 (select .cse7 (+ (* v_~size~0_554 4) c_~queue~0.offset .cse8)))) (= 5 (select .cse7 (+ (* v_~front~0_326 4) c_~queue~0.offset 16))) (< (+ v_~front~0_326 1) 0) (not (<= (+ v_~size~0_555 1) v_~size~0_554)) (not (= (select .cse7 (+ .cse9 c_~queue~0.offset .cse8 12)) 5)) (not (<= (+ c_~size~0 5) v_~size~0_555)) (<= c_~n~0 (+ v_~front~0_326 4)) (not (= (select .cse7 (+ c_~queue~0.offset .cse8 (* v_~size~0_555 4))) 5)) (not (< .cse10 c_~n~0)) (not (= 5 (select .cse7 (+ .cse9 c_~queue~0.offset .cse8 16)))) (not (<= 0 .cse10))))) (forall ((v_~front~0_326 Int) (v_~size~0_555 Int) (v_~size~0_554 Int) (v_ArrVal_1262 (Array Int Int)) (v_ArrVal_1261 (Array Int Int))) (let ((.cse13 (* c_~size~0 4)) (.cse14 (+ v_~size~0_554 c_~front~0)) (.cse11 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1261) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1262) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse12 (* c_~front~0 4))) (or (= 5 (select .cse11 (+ (* v_~front~0_326 4) 16 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (< (+ v_~front~0_326 1) 0) (not (<= (+ v_~size~0_555 1) v_~size~0_554)) (not (<= (+ c_~size~0 5) v_~size~0_555)) (<= c_~n~0 (+ v_~front~0_326 4)) (not (= (select .cse11 (+ .cse12 (* v_~size~0_555 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 5)) (not (= (select .cse11 (+ .cse13 .cse12 12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 5)) (not (< .cse14 c_~n~0)) (not (= (select .cse11 (+ .cse13 .cse12 16 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 5)) (not (<= 0 .cse14)) (not (= (select .cse11 (+ (* v_~size~0_554 4) .cse12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 5))))) (or .cse15 (< (+ 7 |c_ULTIMATE.start_create_fresh_int_array_#t~post17#1|) |c_ULTIMATE.start_create_fresh_int_array_~size#1|)) (<= 0 .cse16) (or (not (= 5 (select .cse1 (+ .cse2 c_~queue~0.offset .cse3)))) .cse0 (forall ((v_~size~0_555 Int) (v_~size~0_554 Int)) (let ((.cse19 (+ v_~size~0_554 c_~front~0)) (.cse17 (select |c_#memory_int| c_~queue~0.base)) (.cse18 (* c_~front~0 4))) (or (not (= 5 (select .cse17 (+ (* v_~size~0_554 4) c_~queue~0.offset .cse18)))) (not (<= (+ v_~size~0_555 1) v_~size~0_554)) (not (<= (+ c_~size~0 1) v_~size~0_555)) (not (< .cse19 c_~n~0)) (not (<= 0 .cse19)) (not (= 5 (select .cse17 (+ c_~queue~0.offset .cse18 (* v_~size~0_555 4))))))))) (<= c_~size~0 5) (let ((.cse20 (+ 2 c_~front~0))) (or (< .cse20 0) (<= c_~n~0 .cse20) (= (select .cse1 (+ c_~queue~0.offset .cse3 8)) 5))) (or (< 7 |c_ULTIMATE.start_create_fresh_int_array_~size#1|) .cse15) (forall ((v_~front~0_326 Int) (v_~size~0_555 Int) (v_~size~0_554 Int) (v_ArrVal_1262 (Array Int Int))) (let ((.cse24 (+ v_~size~0_554 c_~front~0)) (.cse22 (* c_~size~0 4)) (.cse21 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1262) c_~queue~0.base)) (.cse23 (* c_~front~0 4))) (or (< (+ v_~front~0_326 1) 0) (not (<= (+ v_~size~0_555 1) v_~size~0_554)) (not (= 5 (select .cse21 (+ .cse22 c_~queue~0.offset .cse23 16)))) (not (<= (+ c_~size~0 5) v_~size~0_555)) (<= c_~n~0 (+ v_~front~0_326 4)) (not (= 5 (select .cse21 (+ c_~queue~0.offset .cse23 (* v_~size~0_555 4))))) (not (< .cse24 c_~n~0)) (= 5 (select .cse21 (+ (* v_~front~0_326 4) c_~queue~0.offset 16))) (not (<= 0 .cse24)) (not (= (select .cse21 (+ .cse22 c_~queue~0.offset .cse23 12)) 5)) (not (= 5 (select .cse21 (+ (* v_~size~0_554 4) c_~queue~0.offset .cse23))))))) (forall ((v_~front~0_326 Int) (v_~size~0_555 Int) (v_~size~0_554 Int) (v_ArrVal_1262 (Array Int Int)) (v_ArrVal_1261 (Array Int Int))) (let ((.cse28 (* c_~size~0 4)) (.cse26 (* c_~front~0 4)) (.cse27 (+ v_~size~0_554 c_~front~0)) (.cse25 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1261) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1262) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|))) (or (not (= 5 (select .cse25 (+ .cse26 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset| (* v_~size~0_555 4))))) (not (= 5 (select .cse25 (+ (* v_~size~0_554 4) .cse26 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)))) (< (+ v_~front~0_326 1) 0) (not (<= (+ v_~size~0_555 1) v_~size~0_554)) (not (<= (+ c_~size~0 5) v_~size~0_555)) (<= c_~n~0 (+ v_~front~0_326 4)) (not (< .cse27 c_~n~0)) (not (= 5 (select .cse25 (+ .cse28 .cse26 16 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)))) (not (= 5 (select .cse25 (+ .cse28 .cse26 12 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)))) (not (<= 0 .cse27)) (= (select .cse25 (+ (* v_~front~0_326 4) 16 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)) 5)))) (or .cse15 (< (+ 7 |c_ULTIMATE.start_create_fresh_int_array_~i~0#1|) |c_ULTIMATE.start_create_fresh_int_array_~size#1|)) (= 5 c_~x~0) (= c_~front~0 0) (forall ((v_~front~0_326 Int) (v_~size~0_555 Int) (v_~size~0_554 Int) (v_ArrVal_1262 (Array Int Int)) (v_ArrVal_1261 (Array Int Int))) (let ((.cse30 (* c_~size~0 4)) (.cse31 (* c_~front~0 4)) (.cse29 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1261) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1262) |c_ULTIMATE.start_main_#t~ret9#1.base|)) (.cse32 (+ v_~size~0_554 c_~front~0))) (or (not (= (select .cse29 (+ .cse30 .cse31 12 |c_ULTIMATE.start_main_#t~ret9#1.offset|)) 5)) (not (= (select .cse29 (+ .cse30 .cse31 16 |c_ULTIMATE.start_main_#t~ret9#1.offset|)) 5)) (not (= 5 (select .cse29 (+ .cse31 |c_ULTIMATE.start_main_#t~ret9#1.offset| (* v_~size~0_555 4))))) (not (= 5 (select .cse29 (+ (* v_~size~0_554 4) .cse31 |c_ULTIMATE.start_main_#t~ret9#1.offset|)))) (< (+ v_~front~0_326 1) 0) (not (<= (+ v_~size~0_555 1) v_~size~0_554)) (not (<= (+ c_~size~0 5) v_~size~0_555)) (<= c_~n~0 (+ v_~front~0_326 4)) (not (< .cse32 c_~n~0)) (= 5 (select .cse29 (+ (* v_~front~0_326 4) 16 |c_ULTIMATE.start_main_#t~ret9#1.offset|))) (not (<= 0 .cse32))))) (or (= (select .cse1 (+ c_~queue~0.offset .cse3)) 5) (<= c_~n~0 c_~front~0) (< c_~front~0 0)) (let ((.cse33 (+ c_~front~0 1))) (or (= 5 (select .cse1 (+ c_~queue~0.offset .cse3 4))) (< .cse33 0) (<= c_~n~0 .cse33)))))) is different from false [2022-03-15 14:49:58,227 WARN L228 SmtUtils]: Spent 6.34s on a formula simplification. DAG size of input: 65 DAG size of output: 62 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2022-03-15 14:50:54,970 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-15 14:50:54,971 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-15 14:50:55,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 398 states. [2022-03-15 14:50:55,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 851 GetRequests, 375 SyntacticMatches, 6 SemanticMatches, 469 ConstructedPredicates, 2 IntricatePredicates, 9 DeprecatedPredicates, 98092 ImplicationChecksByTransitivity, 209.4s TimeCoverageRelationStatistics Valid=23669, Invalid=195485, Unknown=346, NotChecked=1870, Total=221370 [2022-03-15 14:50:55,046 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 8902 mSDsluCounter, 10875 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 1190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8902 SdHoareTripleChecker+Valid, 10397 SdHoareTripleChecker+Invalid, 8994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1190 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6379 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:50:55,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8902 Valid, 10397 Invalid, 8994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1190 Valid, 1425 Invalid, 0 Unknown, 6379 Unchecked, 1.3s Time] [2022-03-15 14:50:55,047 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-15 14:50:55,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-03-15 14:50:55,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-03-15 14:50:55,248 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (5490states) and FLOYD_HOARE automaton (currently 398 states, 90 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 471 known predicates. [2022-03-15 14:50:55,249 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-15 14:50:55,250 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-15 14:50:55,252 INFO L732 BasicCegarLoop]: Path program histogram: [33, 1, 1, 1, 1] [2022-03-15 14:50:55,253 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 14:50:55,253 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 14:50:55,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 02:50:55 BasicIcfg [2022-03-15 14:50:55,255 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 14:50:55,255 INFO L158 Benchmark]: Toolchain (without parser) took 783077.78ms. Allocated memory was 194.0MB in the beginning and 6.5GB in the end (delta: 6.3GB). Free memory was 136.6MB in the beginning and 3.4GB in the end (delta: -3.3GB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. [2022-03-15 14:50:55,255 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 194.0MB. Free memory is still 153.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 14:50:55,255 INFO L158 Benchmark]: CACSL2BoogieTranslator took 312.87ms. Allocated memory was 194.0MB in the beginning and 283.1MB in the end (delta: 89.1MB). Free memory was 136.4MB in the beginning and 252.4MB in the end (delta: -116.0MB). Peak memory consumption was 7.0MB. Max. memory is 8.0GB. [2022-03-15 14:50:55,256 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.88ms. Allocated memory is still 283.1MB. Free memory was 252.4MB in the beginning and 250.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 14:50:55,256 INFO L158 Benchmark]: Boogie Preprocessor took 37.80ms. Allocated memory is still 283.1MB. Free memory was 250.8MB in the beginning and 249.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 14:50:55,256 INFO L158 Benchmark]: RCFGBuilder took 455.88ms. Allocated memory is still 283.1MB. Free memory was 249.3MB in the beginning and 229.3MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-03-15 14:50:55,256 INFO L158 Benchmark]: TraceAbstraction took 782216.37ms. Allocated memory was 283.1MB in the beginning and 6.5GB in the end (delta: 6.2GB). Free memory was 228.8MB in the beginning and 3.4GB in the end (delta: -3.2GB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. [2022-03-15 14:50:55,257 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 194.0MB. Free memory is still 153.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 312.87ms. Allocated memory was 194.0MB in the beginning and 283.1MB in the end (delta: 89.1MB). Free memory was 136.4MB in the beginning and 252.4MB in the end (delta: -116.0MB). Peak memory consumption was 7.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 48.88ms. Allocated memory is still 283.1MB. Free memory was 252.4MB in the beginning and 250.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.80ms. Allocated memory is still 283.1MB. Free memory was 250.8MB in the beginning and 249.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 455.88ms. Allocated memory is still 283.1MB. Free memory was 249.3MB in the beginning and 229.3MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 782216.37ms. Allocated memory was 283.1MB in the beginning and 6.5GB in the end (delta: 6.2GB). Free memory was 228.8MB in the beginning and 3.4GB in the end (delta: -3.2GB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (5490states) and FLOYD_HOARE automaton (currently 398 states, 90 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 471 known predicates. - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (5490states) and FLOYD_HOARE automaton (currently 398 states, 90 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 471 known predicates. - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (5490states) and FLOYD_HOARE automaton (currently 398 states, 90 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 471 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 124 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 782.1s, OverallIterations: 37, TraceHistogramMax: 8, PathProgramHistogramMax: 33, EmptinessCheckTime: 1.0s, AutomataDifference: 666.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 83107 SdHoareTripleChecker+Valid, 22.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 83107 mSDsluCounter, 189138 SdHoareTripleChecker+Invalid, 19.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 66322 IncrementalHoareTripleChecker+Unchecked, 199588 mSDsCounter, 5909 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 51867 IncrementalHoareTripleChecker+Invalid, 124098 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5909 mSolverCounterUnsat, 7559 mSDtfsCounter, 51867 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14323 GetRequests, 8936 SyntacticMatches, 460 SemanticMatches, 4926 ConstructedPredicates, 9 IntricatePredicates, 16 DeprecatedPredicates, 1022096 ImplicationChecksByTransitivity, 637.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84313occurred in iteration=32, InterpolantAutomatonStates: 3299, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 12.0s AutomataMinimizationTime, 36 MinimizatonAttempts, 402309 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 5.3s SatisfiabilityAnalysisTime, 87.0s InterpolantComputationTime, 9433 NumberOfCodeBlocks, 9324 NumberOfCodeBlocksAsserted, 149 NumberOfCheckSat, 13877 ConstructedInterpolants, 448 QuantifiedInterpolants, 132074 SizeOfPredicates, 625 NumberOfNonLiveVariables, 11498 ConjunctsInSsa, 1320 ConjunctsInUnsatCore, 103 InterpolantComputations, 4 PerfectInterpolantSequences, 5062/12327 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown