/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 14:18:40,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 14:18:40,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 14:18:40,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 14:18:40,445 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 14:18:40,446 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 14:18:40,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 14:18:40,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 14:18:40,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 14:18:40,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 14:18:40,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 14:18:40,451 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2022-03-15 14:18:40,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 14:18:40,476 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 14:18:40,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 14:18:40,481 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 14:18:40,501 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 14:18:40,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 14:18:40,501 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-15 14:18:40,501 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-15 14:18:40,502 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 14:18:40,502 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 14:18:40,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 14:18:40,503 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 14:18:40,503 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 14:18:40,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 14:18:40,503 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 14:18:40,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 14:18:40,504 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 14:18:40,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 14:18:40,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 14:18:40,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 14:18:40,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 14:18:40,504 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 14:18:40,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 14:18:40,504 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 14:18:40,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 14:18:40,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 14:18:40,504 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 14:18:40,504 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 14:18:40,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 14:18:40,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 14:18:40,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 14:18:40,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-15 14:18:40,505 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 14:18:40,505 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 14:18:40,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 14:18:40,505 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-15 14:18:40,505 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 14:18:40,505 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 14:18:40,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 14:18:40,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 14:18:40,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 14:18:40,709 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 14:18:40,711 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 14:18:40,713 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2022-03-15 14:18:40,759 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8b661819/19a1b361e42c428ea3cffb705a7a4518/FLAGe3561d8db [2022-03-15 14:18:41,096 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 14:18:41,097 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2022-03-15 14:18:41,101 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8b661819/19a1b361e42c428ea3cffb705a7a4518/FLAGe3561d8db [2022-03-15 14:18:41,109 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8b661819/19a1b361e42c428ea3cffb705a7a4518 [2022-03-15 14:18:41,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 14:18:41,112 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 14:18:41,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 14:18:41,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 14:18:41,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 14:18:41,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 02:18:41" (1/1) ... [2022-03-15 14:18:41,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d3bad70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:18:41, skipping insertion in model container [2022-03-15 14:18:41,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 02:18:41" (1/1) ... [2022-03-15 14:18:41,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 14:18:41,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 14:18:41,280 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c[2147,2160] [2022-03-15 14:18:41,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 14:18:41,287 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 14:18:41,299 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c[2147,2160] [2022-03-15 14:18:41,299 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 14:18:41,308 INFO L208 MainTranslator]: Completed translation [2022-03-15 14:18:41,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:18:41 WrapperNode [2022-03-15 14:18:41,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 14:18:41,309 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 14:18:41,310 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 14:18:41,310 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 14:18:41,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:18:41" (1/1) ... [2022-03-15 14:18:41,320 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:18:41" (1/1) ... [2022-03-15 14:18:41,336 INFO L137 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2022-03-15 14:18:41,336 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 14:18:41,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 14:18:41,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 14:18:41,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 14:18:41,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:18:41" (1/1) ... [2022-03-15 14:18:41,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:18:41" (1/1) ... [2022-03-15 14:18:41,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:18:41" (1/1) ... [2022-03-15 14:18:41,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:18:41" (1/1) ... [2022-03-15 14:18:41,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:18:41" (1/1) ... [2022-03-15 14:18:41,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:18:41" (1/1) ... [2022-03-15 14:18:41,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:18:41" (1/1) ... [2022-03-15 14:18:41,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 14:18:41,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 14:18:41,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 14:18:41,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 14:18:41,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:18:41" (1/1) ... [2022-03-15 14:18:41,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 14:18:41,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:18:41,412 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 14:18:41,421 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 14:18:41,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 14:18:41,437 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 14:18:41,437 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 14:18:41,437 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 14:18:41,437 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 14:18:41,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 14:18:41,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 14:18:41,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 14:18:41,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-15 14:18:41,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-15 14:18:41,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 14:18:41,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 14:18:41,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-15 14:18:41,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 14:18:41,441 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 14:18:41,492 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 14:18:41,493 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 14:18:41,607 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 14:18:41,630 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 14:18:41,630 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-15 14:18:41,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 02:18:41 BoogieIcfgContainer [2022-03-15 14:18:41,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 14:18:41,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 14:18:41,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 14:18:41,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 14:18:41,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 02:18:41" (1/3) ... [2022-03-15 14:18:41,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f7f8e8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 02:18:41, skipping insertion in model container [2022-03-15 14:18:41,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:18:41" (2/3) ... [2022-03-15 14:18:41,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f7f8e8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 02:18:41, skipping insertion in model container [2022-03-15 14:18:41,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 02:18:41" (3/3) ... [2022-03-15 14:18:41,655 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-nonblocking-counter-alt2.wvr.c [2022-03-15 14:18:41,658 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 14:18:41,658 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-15 14:18:41,658 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 14:18:41,658 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 14:18:41,704 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,705 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,705 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,705 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,707 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,707 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,708 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,708 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,708 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,708 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,708 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,709 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,709 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,709 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,709 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,714 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,714 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,714 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,714 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,715 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,715 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,715 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,715 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,716 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,716 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,716 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,717 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,717 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,717 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,717 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,717 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,717 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,718 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,718 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,718 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,718 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,718 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,718 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,726 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,726 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,726 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,726 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,727 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,727 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,727 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,728 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:18:41,730 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-15 14:18:41,767 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 14:18:41,771 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 14:18:41,772 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-15 14:18:41,780 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 84 transitions, 184 flow [2022-03-15 14:18:41,823 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 330 states, 329 states have (on average 2.5866261398176293) internal successors, (851), 329 states have internal predecessors, (851), 0 states have call successors, (0), 0 states 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 14:18:41,825 INFO L276 IsEmpty]: Start isEmpty. Operand has 330 states, 329 states have (on average 2.5866261398176293) internal successors, (851), 329 states have internal predecessors, (851), 0 states have call successors, (0), 0 states 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 14:18:41,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-15 14:18:41,835 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:18:41,836 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] [2022-03-15 14:18:41,836 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:18:41,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:18:41,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1161800666, now seen corresponding path program 1 times [2022-03-15 14:18:41,846 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:18:41,847 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256836712] [2022-03-15 14:18:41,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:18:41,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:18:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:18:42,039 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 14:18:42,039 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:18:42,039 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256836712] [2022-03-15 14:18:42,040 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256836712] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:18:42,040 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:18:42,040 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 14:18:42,041 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124121276] [2022-03-15 14:18:42,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:18:42,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-15 14:18:42,047 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:18:42,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-15 14:18:42,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-15 14:18:42,076 INFO L87 Difference]: Start difference. First operand has 330 states, 329 states have (on average 2.5866261398176293) internal successors, (851), 329 states have internal predecessors, (851), 0 states have call successors, (0), 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 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 14:18:42,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:18:42,118 INFO L93 Difference]: Finished difference Result 330 states and 780 transitions. [2022-03-15 14:18:42,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-15 14:18:42,120 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-03-15 14:18:42,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:18:42,136 INFO L225 Difference]: With dead ends: 330 [2022-03-15 14:18:42,136 INFO L226 Difference]: Without dead ends: 328 [2022-03-15 14:18:42,137 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 14:18:42,140 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:18:42,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:18:42,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-03-15 14:18:42,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2022-03-15 14:18:42,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 2.379204892966361) internal successors, (778), 327 states have internal predecessors, (778), 0 states have call successors, (0), 0 states 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 14:18:42,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 778 transitions. [2022-03-15 14:18:42,202 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 778 transitions. Word has length 60 [2022-03-15 14:18:42,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:18:42,202 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 778 transitions. [2022-03-15 14:18:42,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 14:18:42,202 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 778 transitions. [2022-03-15 14:18:42,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-15 14:18:42,215 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:18:42,215 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] [2022-03-15 14:18:42,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 14:18:42,216 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:18:42,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:18:42,216 INFO L85 PathProgramCache]: Analyzing trace with hash 651266489, now seen corresponding path program 1 times [2022-03-15 14:18:42,216 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:18:42,217 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193106421] [2022-03-15 14:18:42,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:18:42,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:18:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:18:42,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:18:42,448 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:18:42,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193106421] [2022-03-15 14:18:42,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193106421] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:18:42,449 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:18:42,449 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-15 14:18:42,449 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187556070] [2022-03-15 14:18:42,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:18:42,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 14:18:42,450 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:18:42,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 14:18:42,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-15 14:18:42,451 INFO L87 Difference]: Start difference. First operand 328 states and 778 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 14:18:42,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:18:42,520 INFO L93 Difference]: Finished difference Result 448 states and 1090 transitions. [2022-03-15 14:18:42,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 14:18:42,520 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-03-15 14:18:42,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:18:42,522 INFO L225 Difference]: With dead ends: 448 [2022-03-15 14:18:42,522 INFO L226 Difference]: Without dead ends: 448 [2022-03-15 14:18:42,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-03-15 14:18:42,524 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 147 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:18:42,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 135 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:18:42,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-03-15 14:18:42,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 358. [2022-03-15 14:18:42,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 2.3977591036414565) internal successors, (856), 357 states have internal predecessors, (856), 0 states have call successors, (0), 0 states 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 14:18:42,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 856 transitions. [2022-03-15 14:18:42,534 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 856 transitions. Word has length 60 [2022-03-15 14:18:42,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:18:42,534 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 856 transitions. [2022-03-15 14:18:42,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 14:18:42,535 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 856 transitions. [2022-03-15 14:18:42,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-15 14:18:42,541 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:18:42,541 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] [2022-03-15 14:18:42,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 14:18:42,541 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:18:42,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:18:42,542 INFO L85 PathProgramCache]: Analyzing trace with hash -72683847, now seen corresponding path program 1 times [2022-03-15 14:18:42,542 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:18:42,542 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877078228] [2022-03-15 14:18:42,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:18:42,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:18:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:18:42,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:18:42,676 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:18:42,676 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877078228] [2022-03-15 14:18:42,676 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877078228] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:18:42,676 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064504990] [2022-03-15 14:18:42,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:18:42,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:18:42,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:18:42,684 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 14:18:42,685 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 14:18:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:18:42,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-15 14:18:42,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:18:42,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:18:42,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:18:43,096 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 14:18:43,100 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064504990] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-15 14:18:43,100 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-15 14:18:43,100 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2022-03-15 14:18:43,100 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066233713] [2022-03-15 14:18:43,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:18:43,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 14:18:43,101 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:18:43,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 14:18:43,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-03-15 14:18:43,103 INFO L87 Difference]: Start difference. First operand 358 states and 856 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 14:18:43,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:18:43,154 INFO L93 Difference]: Finished difference Result 425 states and 1038 transitions. [2022-03-15 14:18:43,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 14:18:43,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-03-15 14:18:43,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:18:43,157 INFO L225 Difference]: With dead ends: 425 [2022-03-15 14:18:43,157 INFO L226 Difference]: Without dead ends: 425 [2022-03-15 14:18:43,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-03-15 14:18:43,159 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 35 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:18:43,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 150 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:18:43,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-03-15 14:18:43,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 393. [2022-03-15 14:18:43,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 2.423469387755102) internal successors, (950), 392 states have internal predecessors, (950), 0 states have call successors, (0), 0 states 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 14:18:43,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 950 transitions. [2022-03-15 14:18:43,170 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 950 transitions. Word has length 65 [2022-03-15 14:18:43,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:18:43,170 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 950 transitions. [2022-03-15 14:18:43,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 14:18:43,171 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 950 transitions. [2022-03-15 14:18:43,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-15 14:18:43,172 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:18:43,172 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:18:43,191 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 14:18:43,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:18:43,391 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:18:43,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:18:43,392 INFO L85 PathProgramCache]: Analyzing trace with hash 2097537209, now seen corresponding path program 2 times [2022-03-15 14:18:43,392 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:18:43,392 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49422138] [2022-03-15 14:18:43,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:18:43,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:18:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:18:43,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:18:43,468 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:18:43,468 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49422138] [2022-03-15 14:18:43,468 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49422138] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:18:43,468 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695553258] [2022-03-15 14:18:43,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:18:43,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:18:43,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:18:43,470 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 14:18:43,473 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 14:18:43,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-15 14:18:43,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:18:43,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 14:18:43,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:18:43,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:18:43,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 14:18:43,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695553258] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:18:43,770 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 14:18:43,770 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2022-03-15 14:18:43,770 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101158430] [2022-03-15 14:18:43,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:18:43,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 14:18:43,770 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:18:43,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 14:18:43,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-15 14:18:43,771 INFO L87 Difference]: Start difference. First operand 393 states and 950 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 14:18:43,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:18:43,881 INFO L93 Difference]: Finished difference Result 479 states and 1182 transitions. [2022-03-15 14:18:43,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 14:18:43,881 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-03-15 14:18:43,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:18:43,884 INFO L225 Difference]: With dead ends: 479 [2022-03-15 14:18:43,884 INFO L226 Difference]: Without dead ends: 479 [2022-03-15 14:18:43,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-03-15 14:18:43,884 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 112 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:18:43,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 166 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:18:43,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-03-15 14:18:43,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 401. [2022-03-15 14:18:43,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 2.43) internal successors, (972), 400 states have internal predecessors, (972), 0 states have call successors, (0), 0 states 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 14:18:43,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 972 transitions. [2022-03-15 14:18:43,893 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 972 transitions. Word has length 65 [2022-03-15 14:18:43,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:18:43,893 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 972 transitions. [2022-03-15 14:18:43,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 14:18:43,894 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 972 transitions. [2022-03-15 14:18:43,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-15 14:18:43,895 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:18:43,895 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] [2022-03-15 14:18:43,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-15 14:18:44,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-03-15 14:18:44,113 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:18:44,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:18:44,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1804809499, now seen corresponding path program 1 times [2022-03-15 14:18:44,114 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:18:44,114 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876637561] [2022-03-15 14:18:44,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:18:44,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:18:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:18:44,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:18:44,274 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:18:44,274 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876637561] [2022-03-15 14:18:44,274 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876637561] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:18:44,274 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464121908] [2022-03-15 14:18:44,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:18:44,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:18:44,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:18:44,275 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 14:18:44,276 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 14:18:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:18:44,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-15 14:18:44,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:18:44,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:18:44,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:18:45,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:18:45,016 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464121908] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:18:45,016 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:18:45,016 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2022-03-15 14:18:45,016 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252507859] [2022-03-15 14:18:45,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:18:45,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 14:18:45,017 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:18:45,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 14:18:45,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-03-15 14:18:45,018 INFO L87 Difference]: Start difference. First operand 401 states and 972 transitions. Second operand has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 14:18:45,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:18:45,985 INFO L93 Difference]: Finished difference Result 2203 states and 5648 transitions. [2022-03-15 14:18:45,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-15 14:18:45,986 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-15 14:18:45,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:18:45,993 INFO L225 Difference]: With dead ends: 2203 [2022-03-15 14:18:45,993 INFO L226 Difference]: Without dead ends: 1933 [2022-03-15 14:18:45,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 122 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=431, Invalid=1051, Unknown=0, NotChecked=0, Total=1482 [2022-03-15 14:18:45,994 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 584 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:18:45,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 1302 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:18:45,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1933 states. [2022-03-15 14:18:46,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1933 to 702. [2022-03-15 14:18:46,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 701 states have (on average 2.637660485021398) internal successors, (1849), 701 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states 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 14:18:46,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1849 transitions. [2022-03-15 14:18:46,018 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1849 transitions. Word has length 67 [2022-03-15 14:18:46,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:18:46,018 INFO L470 AbstractCegarLoop]: Abstraction has 702 states and 1849 transitions. [2022-03-15 14:18:46,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 14:18:46,018 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1849 transitions. [2022-03-15 14:18:46,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-15 14:18:46,020 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:18:46,020 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] [2022-03-15 14:18:46,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-15 14:18:46,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:18:46,235 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:18:46,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:18:46,236 INFO L85 PathProgramCache]: Analyzing trace with hash -2075173441, now seen corresponding path program 2 times [2022-03-15 14:18:46,236 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:18:46,236 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148624371] [2022-03-15 14:18:46,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:18:46,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:18:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:18:46,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:18:46,337 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:18:46,337 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148624371] [2022-03-15 14:18:46,337 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148624371] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:18:46,337 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572947384] [2022-03-15 14:18:46,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:18:46,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:18:46,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:18:46,340 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 14:18:46,342 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 14:18:46,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:18:46,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:18:46,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 14:18:46,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:18:46,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:18:46,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:18:46,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:18:46,813 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572947384] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:18:46,813 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:18:46,813 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2022-03-15 14:18:46,815 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490247268] [2022-03-15 14:18:46,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:18:46,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 14:18:46,832 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:18:46,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 14:18:46,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-03-15 14:18:46,832 INFO L87 Difference]: Start difference. First operand 702 states and 1849 transitions. Second operand has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 14:18:46,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:18:46,994 INFO L93 Difference]: Finished difference Result 917 states and 2371 transitions. [2022-03-15 14:18:46,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 14:18:46,995 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-03-15 14:18:46,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:18:46,999 INFO L225 Difference]: With dead ends: 917 [2022-03-15 14:18:46,999 INFO L226 Difference]: Without dead ends: 887 [2022-03-15 14:18:46,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2022-03-15 14:18:46,999 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 70 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:18:47,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 674 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:18:47,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2022-03-15 14:18:47,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 643. [2022-03-15 14:18:47,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 2.587227414330218) internal successors, (1661), 642 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states 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 14:18:47,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1661 transitions. [2022-03-15 14:18:47,014 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1661 transitions. Word has length 67 [2022-03-15 14:18:47,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:18:47,014 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 1661 transitions. [2022-03-15 14:18:47,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 14:18:47,015 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1661 transitions. [2022-03-15 14:18:47,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-15 14:18:47,016 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:18:47,016 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:18:47,032 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 14:18:47,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:18:47,231 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:18:47,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:18:47,232 INFO L85 PathProgramCache]: Analyzing trace with hash -145870821, now seen corresponding path program 3 times [2022-03-15 14:18:47,232 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:18:47,232 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700315957] [2022-03-15 14:18:47,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:18:47,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:18:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:18:47,387 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:18:47,387 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:18:47,387 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700315957] [2022-03-15 14:18:47,387 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700315957] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:18:47,387 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817234401] [2022-03-15 14:18:47,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:18:47,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:18:47,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:18:47,391 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 14:18:47,392 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 14:18:47,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 14:18:47,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:18:47,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 14:18:47,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:18:47,605 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:18:47,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:18:47,854 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:18:47,855 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817234401] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:18:47,855 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:18:47,855 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2022-03-15 14:18:47,855 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912983380] [2022-03-15 14:18:47,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:18:47,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 14:18:47,856 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:18:47,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 14:18:47,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-03-15 14:18:47,856 INFO L87 Difference]: Start difference. First operand 643 states and 1661 transitions. Second operand has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:18:48,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:18:48,204 INFO L93 Difference]: Finished difference Result 1092 states and 2851 transitions. [2022-03-15 14:18:48,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 14:18:48,205 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-15 14:18:48,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:18:48,209 INFO L225 Difference]: With dead ends: 1092 [2022-03-15 14:18:48,209 INFO L226 Difference]: Without dead ends: 1092 [2022-03-15 14:18:48,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=213, Invalid=657, Unknown=0, NotChecked=0, Total=870 [2022-03-15 14:18:48,209 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 427 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:18:48,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 886 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:18:48,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2022-03-15 14:18:48,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 726. [2022-03-15 14:18:48,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 725 states have (on average 2.613793103448276) internal successors, (1895), 725 states have internal predecessors, (1895), 0 states have call successors, (0), 0 states 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 14:18:48,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 1895 transitions. [2022-03-15 14:18:48,223 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 1895 transitions. Word has length 72 [2022-03-15 14:18:48,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:18:48,224 INFO L470 AbstractCegarLoop]: Abstraction has 726 states and 1895 transitions. [2022-03-15 14:18:48,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:18:48,224 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 1895 transitions. [2022-03-15 14:18:48,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-15 14:18:48,225 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:18:48,225 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:18:48,255 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 14:18:48,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:18:48,440 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:18:48,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:18:48,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1917541861, now seen corresponding path program 4 times [2022-03-15 14:18:48,440 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:18:48,440 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451750635] [2022-03-15 14:18:48,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:18:48,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:18:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:18:48,569 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:18:48,569 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:18:48,569 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451750635] [2022-03-15 14:18:48,569 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451750635] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:18:48,569 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672863201] [2022-03-15 14:18:48,569 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:18:48,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:18:48,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:18:48,584 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 14:18:48,585 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 14:18:48,630 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:18:48,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:18:48,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 14:18:48,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:18:48,844 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:18:48,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:18:49,360 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:18:49,361 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672863201] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:18:49,361 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:18:49,361 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2022-03-15 14:18:49,361 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653463344] [2022-03-15 14:18:49,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:18:49,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:18:49,361 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:18:49,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:18:49,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:18:49,362 INFO L87 Difference]: Start difference. First operand 726 states and 1895 transitions. Second operand has 20 states, 20 states have (on average 5.75) internal successors, (115), 20 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:18:50,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:18:50,515 INFO L93 Difference]: Finished difference Result 2030 states and 5196 transitions. [2022-03-15 14:18:50,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-15 14:18:50,515 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.75) internal successors, (115), 20 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-15 14:18:50,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:18:50,522 INFO L225 Difference]: With dead ends: 2030 [2022-03-15 14:18:50,522 INFO L226 Difference]: Without dead ends: 2030 [2022-03-15 14:18:50,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=507, Invalid=1655, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 14:18:50,523 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 569 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:18:50,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 1148 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:18:50,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2030 states. [2022-03-15 14:18:50,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2030 to 742. [2022-03-15 14:18:50,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 741 states have (on average 2.6167341430499325) internal successors, (1939), 741 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states 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 14:18:50,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1939 transitions. [2022-03-15 14:18:50,542 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1939 transitions. Word has length 72 [2022-03-15 14:18:50,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:18:50,542 INFO L470 AbstractCegarLoop]: Abstraction has 742 states and 1939 transitions. [2022-03-15 14:18:50,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.75) internal successors, (115), 20 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:18:50,542 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1939 transitions. [2022-03-15 14:18:50,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-15 14:18:50,544 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:18:50,544 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:18:50,564 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 14:18:50,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:18:50,759 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:18:50,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:18:50,760 INFO L85 PathProgramCache]: Analyzing trace with hash -899018853, now seen corresponding path program 5 times [2022-03-15 14:18:50,760 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:18:50,760 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593850972] [2022-03-15 14:18:50,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:18:50,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:18:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:18:50,964 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:18:50,964 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:18:50,964 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593850972] [2022-03-15 14:18:50,964 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593850972] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:18:50,964 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120350146] [2022-03-15 14:18:50,964 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:18:50,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:18:50,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:18:50,966 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 14:18:50,966 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 14:18:51,012 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 14:18:51,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:18:51,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 14:18:51,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:18:51,231 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:18:51,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:19:27,724 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:27,724 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120350146] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:19:27,724 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:19:27,724 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-03-15 14:19:27,724 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371058029] [2022-03-15 14:19:27,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:19:27,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:19:27,725 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:19:27,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:19:27,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:19:27,725 INFO L87 Difference]: Start difference. First operand 742 states and 1939 transitions. Second operand has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:19:32,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:19:32,716 INFO L93 Difference]: Finished difference Result 1870 states and 4875 transitions. [2022-03-15 14:19:32,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-15 14:19:32,716 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-15 14:19:32,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:19:32,723 INFO L225 Difference]: With dead ends: 1870 [2022-03-15 14:19:32,723 INFO L226 Difference]: Without dead ends: 1870 [2022-03-15 14:19:32,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2266 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1326, Invalid=5480, Unknown=0, NotChecked=0, Total=6806 [2022-03-15 14:19:32,725 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 605 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 1736 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:19:32,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [605 Valid, 1736 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 14:19:32,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2022-03-15 14:19:32,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 750. [2022-03-15 14:19:32,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 749 states have (on average 2.628838451268358) internal successors, (1969), 749 states have internal predecessors, (1969), 0 states have call successors, (0), 0 states 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 14:19:32,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1969 transitions. [2022-03-15 14:19:32,743 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1969 transitions. Word has length 72 [2022-03-15 14:19:32,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:19:32,744 INFO L470 AbstractCegarLoop]: Abstraction has 750 states and 1969 transitions. [2022-03-15 14:19:32,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:19:32,744 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1969 transitions. [2022-03-15 14:19:32,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-15 14:19:32,745 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:19:32,745 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:19:32,762 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 14:19:32,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:19:32,946 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:19:32,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:19:32,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1016371871, now seen corresponding path program 6 times [2022-03-15 14:19:32,947 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:19:32,947 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014970192] [2022-03-15 14:19:32,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:19:32,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:19:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:19:33,076 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:33,076 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:19:33,076 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014970192] [2022-03-15 14:19:33,076 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014970192] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:19:33,076 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360909530] [2022-03-15 14:19:33,076 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:19:33,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:19:33,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:19:33,077 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 14:19:33,079 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 14:19:33,149 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-15 14:19:33,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:19:33,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 14:19:33,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:19:33,355 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:33,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:19:33,868 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:33,868 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360909530] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:19:33,868 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:19:33,869 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2022-03-15 14:19:33,869 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773782257] [2022-03-15 14:19:33,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:19:33,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 14:19:33,869 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:19:33,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 14:19:33,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-03-15 14:19:33,870 INFO L87 Difference]: Start difference. First operand 750 states and 1969 transitions. Second operand has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 14:19:35,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:19:35,889 INFO L93 Difference]: Finished difference Result 1558 states and 4102 transitions. [2022-03-15 14:19:35,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-15 14:19:35,889 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-15 14:19:35,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:19:35,894 INFO L225 Difference]: With dead ends: 1558 [2022-03-15 14:19:35,894 INFO L226 Difference]: Without dead ends: 1510 [2022-03-15 14:19:35,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 967 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=643, Invalid=2437, Unknown=0, NotChecked=0, Total=3080 [2022-03-15 14:19:35,895 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 580 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:19:35,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 1065 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:19:35,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1510 states. [2022-03-15 14:19:35,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1510 to 942. [2022-03-15 14:19:35,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 941 states have (on average 2.6790648246546227) internal successors, (2521), 941 states have internal predecessors, (2521), 0 states have call successors, (0), 0 states 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 14:19:35,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 2521 transitions. [2022-03-15 14:19:35,917 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 2521 transitions. Word has length 72 [2022-03-15 14:19:35,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:19:35,917 INFO L470 AbstractCegarLoop]: Abstraction has 942 states and 2521 transitions. [2022-03-15 14:19:35,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 14:19:35,917 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 2521 transitions. [2022-03-15 14:19:35,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-15 14:19:35,919 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:19:35,919 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:19:35,935 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 14:19:36,135 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,SelfDestructingSolverStorable9 [2022-03-15 14:19:36,135 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:19:36,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:19:36,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1259204635, now seen corresponding path program 7 times [2022-03-15 14:19:36,136 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:19:36,136 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018742401] [2022-03-15 14:19:36,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:19:36,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:19:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:19:36,269 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:36,269 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:19:36,269 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018742401] [2022-03-15 14:19:36,269 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018742401] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:19:36,269 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099464937] [2022-03-15 14:19:36,269 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:19:36,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:19:36,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:19:36,271 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 14:19:36,272 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 14:19:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:19:36,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-15 14:19:36,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:19:36,506 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:36,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:19:36,822 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:36,823 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099464937] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:19:36,823 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:19:36,823 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 22 [2022-03-15 14:19:36,823 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988158091] [2022-03-15 14:19:36,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:19:36,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:19:36,823 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:19:36,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:19:36,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:19:36,824 INFO L87 Difference]: Start difference. First operand 942 states and 2521 transitions. Second operand has 22 states, 22 states have (on average 5.7272727272727275) internal successors, (126), 22 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 14:19:38,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:19:38,494 INFO L93 Difference]: Finished difference Result 1966 states and 5300 transitions. [2022-03-15 14:19:38,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-15 14:19:38,494 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.7272727272727275) internal successors, (126), 22 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-15 14:19:38,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:19:38,501 INFO L225 Difference]: With dead ends: 1966 [2022-03-15 14:19:38,501 INFO L226 Difference]: Without dead ends: 1966 [2022-03-15 14:19:38,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1356 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=702, Invalid=4128, Unknown=0, NotChecked=0, Total=4830 [2022-03-15 14:19:38,502 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 433 mSDsluCounter, 1712 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:19:38,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 1741 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:19:38,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1966 states. [2022-03-15 14:19:38,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 966. [2022-03-15 14:19:38,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 966 states, 965 states have (on average 2.6808290155440413) internal successors, (2587), 965 states have internal predecessors, (2587), 0 states have call successors, (0), 0 states 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 14:19:38,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 2587 transitions. [2022-03-15 14:19:38,536 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 2587 transitions. Word has length 72 [2022-03-15 14:19:38,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:19:38,536 INFO L470 AbstractCegarLoop]: Abstraction has 966 states and 2587 transitions. [2022-03-15 14:19:38,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.7272727272727275) internal successors, (126), 22 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 14:19:38,536 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 2587 transitions. [2022-03-15 14:19:38,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-15 14:19:38,538 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:19:38,538 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:19:38,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-03-15 14:19:38,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:19:38,751 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:19:38,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:19:38,752 INFO L85 PathProgramCache]: Analyzing trace with hash -2017239653, now seen corresponding path program 8 times [2022-03-15 14:19:38,752 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:19:38,752 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048819016] [2022-03-15 14:19:38,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:19:38,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:19:38,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:19:38,872 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:38,873 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:19:38,873 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048819016] [2022-03-15 14:19:38,873 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048819016] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:19:38,873 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067917400] [2022-03-15 14:19:38,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:19:38,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:19:38,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:19:38,874 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 14:19:38,877 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 14:19:38,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:19:38,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:19:38,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 14:19:38,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:19:39,138 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:39,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:19:39,527 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:39,528 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067917400] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:19:39,528 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:19:39,528 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 17 [2022-03-15 14:19:39,528 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83184980] [2022-03-15 14:19:39,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:19:39,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 14:19:39,528 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:19:39,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 14:19:39,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-03-15 14:19:39,529 INFO L87 Difference]: Start difference. First operand 966 states and 2587 transitions. Second operand has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 14:19:42,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:19:42,619 INFO L93 Difference]: Finished difference Result 2834 states and 7474 transitions. [2022-03-15 14:19:42,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-15 14:19:42,619 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-15 14:19:42,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:19:42,628 INFO L225 Difference]: With dead ends: 2834 [2022-03-15 14:19:42,628 INFO L226 Difference]: Without dead ends: 2834 [2022-03-15 14:19:42,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1616 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1010, Invalid=3820, Unknown=0, NotChecked=0, Total=4830 [2022-03-15 14:19:42,630 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 567 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:19:42,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [567 Valid, 1462 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:19:42,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2834 states. [2022-03-15 14:19:42,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2834 to 1078. [2022-03-15 14:19:42,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 1077 states have (on average 2.725162488393686) internal successors, (2935), 1077 states have internal predecessors, (2935), 0 states have call successors, (0), 0 states 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 14:19:42,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 2935 transitions. [2022-03-15 14:19:42,658 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 2935 transitions. Word has length 72 [2022-03-15 14:19:42,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:19:42,658 INFO L470 AbstractCegarLoop]: Abstraction has 1078 states and 2935 transitions. [2022-03-15 14:19:42,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 14:19:42,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 2935 transitions. [2022-03-15 14:19:42,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-15 14:19:42,660 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:19:42,660 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:19:42,699 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 14:19:42,892 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,SelfDestructingSolverStorable11 [2022-03-15 14:19:42,893 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:19:42,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:19:42,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1902016859, now seen corresponding path program 9 times [2022-03-15 14:19:42,893 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:19:42,893 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443781917] [2022-03-15 14:19:42,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:19:42,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:19:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:19:43,053 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:43,053 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:19:43,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443781917] [2022-03-15 14:19:43,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443781917] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:19:43,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071159641] [2022-03-15 14:19:43,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:19:43,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:19:43,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:19:43,055 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 14:19:43,055 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 14:19:43,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 14:19:43,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:19:43,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 14:19:43,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:19:43,319 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:43,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:19:43,752 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:43,752 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071159641] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:19:43,752 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:19:43,752 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2022-03-15 14:19:43,752 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916375903] [2022-03-15 14:19:43,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:19:43,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 14:19:43,753 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:19:43,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 14:19:43,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2022-03-15 14:19:43,753 INFO L87 Difference]: Start difference. First operand 1078 states and 2935 transitions. Second operand has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 14:19:45,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:19:45,807 INFO L93 Difference]: Finished difference Result 3042 states and 8046 transitions. [2022-03-15 14:19:45,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-03-15 14:19:45,808 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-15 14:19:45,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:19:45,822 INFO L225 Difference]: With dead ends: 3042 [2022-03-15 14:19:45,822 INFO L226 Difference]: Without dead ends: 3042 [2022-03-15 14:19:45,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1968 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1181, Invalid=4519, Unknown=0, NotChecked=0, Total=5700 [2022-03-15 14:19:45,824 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 672 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:19:45,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [672 Valid, 1235 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:19:45,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2022-03-15 14:19:45,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 1182. [2022-03-15 14:19:45,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 1181 states have (on average 2.754445385266723) internal successors, (3253), 1181 states have internal predecessors, (3253), 0 states have call successors, (0), 0 states 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 14:19:45,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 3253 transitions. [2022-03-15 14:19:45,856 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 3253 transitions. Word has length 72 [2022-03-15 14:19:45,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:19:45,857 INFO L470 AbstractCegarLoop]: Abstraction has 1182 states and 3253 transitions. [2022-03-15 14:19:45,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 14:19:45,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 3253 transitions. [2022-03-15 14:19:45,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-15 14:19:45,874 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:19:45,874 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:19:45,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-03-15 14:19:46,089 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,SelfDestructingSolverStorable12 [2022-03-15 14:19:46,090 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:19:46,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:19:46,090 INFO L85 PathProgramCache]: Analyzing trace with hash -477559713, now seen corresponding path program 10 times [2022-03-15 14:19:46,090 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:19:46,090 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088113846] [2022-03-15 14:19:46,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:19:46,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:19:46,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:19:46,193 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:46,194 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:19:46,194 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088113846] [2022-03-15 14:19:46,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088113846] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:19:46,194 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68499674] [2022-03-15 14:19:46,194 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:19:46,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:19:46,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:19:46,195 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 14:19:46,196 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 14:19:46,242 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:19:46,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:19:46,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 14:19:46,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:19:46,454 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:46,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:19:46,919 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:46,920 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68499674] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:19:46,920 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:19:46,920 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 19 [2022-03-15 14:19:46,920 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484643521] [2022-03-15 14:19:46,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:19:46,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:19:46,920 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:19:46,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:19:46,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:19:46,921 INFO L87 Difference]: Start difference. First operand 1182 states and 3253 transitions. Second operand has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:19:48,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:19:48,734 INFO L93 Difference]: Finished difference Result 1947 states and 5342 transitions. [2022-03-15 14:19:48,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-15 14:19:48,735 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-15 14:19:48,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:19:48,739 INFO L225 Difference]: With dead ends: 1947 [2022-03-15 14:19:48,739 INFO L226 Difference]: Without dead ends: 1899 [2022-03-15 14:19:48,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1016 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=692, Invalid=2500, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 14:19:48,740 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 426 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:19:48,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [426 Valid, 1220 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:19:48,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2022-03-15 14:19:48,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1234. [2022-03-15 14:19:48,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1233 states have (on average 2.7607461476074615) internal successors, (3404), 1233 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states 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 14:19:48,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 3404 transitions. [2022-03-15 14:19:48,763 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 3404 transitions. Word has length 72 [2022-03-15 14:19:48,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:19:48,763 INFO L470 AbstractCegarLoop]: Abstraction has 1234 states and 3404 transitions. [2022-03-15 14:19:48,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:19:48,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 3404 transitions. [2022-03-15 14:19:48,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-15 14:19:48,765 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:19:48,765 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:19:48,797 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 14:19:48,983 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,SelfDestructingSolverStorable13 [2022-03-15 14:19:48,983 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:19:48,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:19:48,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1924749117, now seen corresponding path program 11 times [2022-03-15 14:19:48,984 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:19:48,984 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900091107] [2022-03-15 14:19:48,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:19:48,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:19:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:19:49,072 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:49,072 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:19:49,072 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900091107] [2022-03-15 14:19:49,072 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900091107] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:19:49,072 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139355431] [2022-03-15 14:19:49,072 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:19:49,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:19:49,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:19:49,074 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 14:19:49,075 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 14:19:49,113 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 14:19:49,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:19:49,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-15 14:19:49,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:19:49,317 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:49,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:19:49,637 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:49,637 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139355431] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:19:49,637 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:19:49,637 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 20 [2022-03-15 14:19:49,638 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207514801] [2022-03-15 14:19:49,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:19:49,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:19:49,638 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:19:49,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:19:49,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:19:49,639 INFO L87 Difference]: Start difference. First operand 1234 states and 3404 transitions. Second operand has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 14:19:50,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:19:50,744 INFO L93 Difference]: Finished difference Result 1825 states and 4913 transitions. [2022-03-15 14:19:50,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-15 14:19:50,744 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-15 14:19:50,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:19:50,747 INFO L225 Difference]: With dead ends: 1825 [2022-03-15 14:19:50,748 INFO L226 Difference]: Without dead ends: 1789 [2022-03-15 14:19:50,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 763 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=540, Invalid=2322, Unknown=0, NotChecked=0, Total=2862 [2022-03-15 14:19:50,749 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 486 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:19:50,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 1182 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:19:50,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2022-03-15 14:19:50,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1234. [2022-03-15 14:19:50,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1233 states have (on average 2.75750202757502) internal successors, (3400), 1233 states have internal predecessors, (3400), 0 states have call successors, (0), 0 states 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 14:19:50,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 3400 transitions. [2022-03-15 14:19:50,769 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 3400 transitions. Word has length 72 [2022-03-15 14:19:50,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:19:50,769 INFO L470 AbstractCegarLoop]: Abstraction has 1234 states and 3400 transitions. [2022-03-15 14:19:50,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 14:19:50,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 3400 transitions. [2022-03-15 14:19:50,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-15 14:19:50,771 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:19:50,772 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:19:50,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-03-15 14:19:50,987 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,SelfDestructingSolverStorable14 [2022-03-15 14:19:50,987 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:19:50,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:19:50,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1528466691, now seen corresponding path program 12 times [2022-03-15 14:19:50,988 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:19:50,988 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019682026] [2022-03-15 14:19:50,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:19:50,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:19:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:19:51,083 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:51,083 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:19:51,083 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019682026] [2022-03-15 14:19:51,083 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019682026] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:19:51,083 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217074637] [2022-03-15 14:19:51,083 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:19:51,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:19:51,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:19:51,084 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 14:19:51,085 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 14:19:51,135 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 14:19:51,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:19:51,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-15 14:19:51,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:19:51,328 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:51,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:19:51,585 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:51,585 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217074637] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:19:51,585 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:19:51,585 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 20 [2022-03-15 14:19:51,585 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335819244] [2022-03-15 14:19:51,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:19:51,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:19:51,586 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:19:51,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:19:51,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:19:51,586 INFO L87 Difference]: Start difference. First operand 1234 states and 3400 transitions. Second operand has 20 states, 20 states have (on average 5.85) internal successors, (117), 20 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:19:54,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:19:54,178 INFO L93 Difference]: Finished difference Result 3500 states and 9395 transitions. [2022-03-15 14:19:54,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-03-15 14:19:54,179 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.85) internal successors, (117), 20 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-15 14:19:54,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:19:54,185 INFO L225 Difference]: With dead ends: 3500 [2022-03-15 14:19:54,185 INFO L226 Difference]: Without dead ends: 3398 [2022-03-15 14:19:54,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1888 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=883, Invalid=5437, Unknown=0, NotChecked=0, Total=6320 [2022-03-15 14:19:54,189 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 423 mSDsluCounter, 2093 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 2139 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:19:54,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [423 Valid, 2139 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:19:54,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3398 states. [2022-03-15 14:19:54,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3398 to 1538. [2022-03-15 14:19:54,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1537 states have (on average 2.810670136629798) internal successors, (4320), 1537 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states 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 14:19:54,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 4320 transitions. [2022-03-15 14:19:54,225 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 4320 transitions. Word has length 72 [2022-03-15 14:19:54,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:19:54,225 INFO L470 AbstractCegarLoop]: Abstraction has 1538 states and 4320 transitions. [2022-03-15 14:19:54,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.85) internal successors, (117), 20 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:19:54,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 4320 transitions. [2022-03-15 14:19:54,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-15 14:19:54,229 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:19:54,229 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:19:54,245 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 14:19:54,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:19:54,445 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:19:54,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:19:54,446 INFO L85 PathProgramCache]: Analyzing trace with hash -208297657, now seen corresponding path program 13 times [2022-03-15 14:19:54,446 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:19:54,446 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429029988] [2022-03-15 14:19:54,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:19:54,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:19:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:19:54,542 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:54,542 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:19:54,542 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429029988] [2022-03-15 14:19:54,542 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429029988] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:19:54,542 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215108999] [2022-03-15 14:19:54,542 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:19:54,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:19:54,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:19:54,544 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 14:19:54,544 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 14:19:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:19:54,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 14:19:54,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:19:54,800 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:54,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:19:55,340 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:55,341 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215108999] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:19:55,341 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:19:55,341 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 19 [2022-03-15 14:19:55,341 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493318793] [2022-03-15 14:19:55,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:19:55,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:19:55,341 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:19:55,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:19:55,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:19:55,342 INFO L87 Difference]: Start difference. First operand 1538 states and 4320 transitions. Second operand has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:19:56,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:19:56,422 INFO L93 Difference]: Finished difference Result 2407 states and 6727 transitions. [2022-03-15 14:19:56,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-15 14:19:56,422 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-15 14:19:56,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:19:56,427 INFO L225 Difference]: With dead ends: 2407 [2022-03-15 14:19:56,427 INFO L226 Difference]: Without dead ends: 2359 [2022-03-15 14:19:56,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=416, Invalid=1476, Unknown=0, NotChecked=0, Total=1892 [2022-03-15 14:19:56,428 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 326 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:19:56,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 1330 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:19:56,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2022-03-15 14:19:56,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 1490. [2022-03-15 14:19:56,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1490 states, 1489 states have (on average 2.80456682337139) internal successors, (4176), 1489 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states 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 14:19:56,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 4176 transitions. [2022-03-15 14:19:56,456 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 4176 transitions. Word has length 72 [2022-03-15 14:19:56,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:19:56,456 INFO L470 AbstractCegarLoop]: Abstraction has 1490 states and 4176 transitions. [2022-03-15 14:19:56,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:19:56,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 4176 transitions. [2022-03-15 14:19:56,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-15 14:19:56,458 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:19:56,459 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:19:56,475 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 14:19:56,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-15 14:19:56,675 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:19:56,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:19:56,676 INFO L85 PathProgramCache]: Analyzing trace with hash -2100956123, now seen corresponding path program 14 times [2022-03-15 14:19:56,676 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:19:56,676 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078611404] [2022-03-15 14:19:56,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:19:56,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:19:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:19:56,780 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:56,780 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:19:56,781 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078611404] [2022-03-15 14:19:56,781 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078611404] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:19:56,781 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588518900] [2022-03-15 14:19:56,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:19:56,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:19:56,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:19:56,782 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 14:19:56,782 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 14:19:56,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:19:56,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:19:56,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 14:19:56,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:19:57,033 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:57,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:19:57,528 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:57,528 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588518900] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:19:57,528 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:19:57,528 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 17 [2022-03-15 14:19:57,528 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710074171] [2022-03-15 14:19:57,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:19:57,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 14:19:57,529 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:19:57,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 14:19:57,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-03-15 14:19:57,529 INFO L87 Difference]: Start difference. First operand 1490 states and 4176 transitions. Second operand has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 17 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:19:58,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:19:58,656 INFO L93 Difference]: Finished difference Result 2267 states and 6290 transitions. [2022-03-15 14:19:58,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-15 14:19:58,657 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 17 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-15 14:19:58,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:19:58,661 INFO L225 Difference]: With dead ends: 2267 [2022-03-15 14:19:58,661 INFO L226 Difference]: Without dead ends: 2183 [2022-03-15 14:19:58,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 136 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=293, Invalid=1039, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 14:19:58,661 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 268 mSDsluCounter, 973 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:19:58,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 1049 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:19:58,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2183 states. [2022-03-15 14:19:58,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2183 to 1558. [2022-03-15 14:19:58,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1558 states, 1557 states have (on average 2.7996146435452793) internal successors, (4359), 1557 states have internal predecessors, (4359), 0 states have call successors, (0), 0 states 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 14:19:58,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 4359 transitions. [2022-03-15 14:19:58,687 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 4359 transitions. Word has length 72 [2022-03-15 14:19:58,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:19:58,687 INFO L470 AbstractCegarLoop]: Abstraction has 1558 states and 4359 transitions. [2022-03-15 14:19:58,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 17 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:19:58,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 4359 transitions. [2022-03-15 14:19:58,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-15 14:19:58,689 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:19:58,690 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:19:58,706 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 14:19:58,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-15 14:19:58,903 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:19:58,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:19:58,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1872496129, now seen corresponding path program 15 times [2022-03-15 14:19:58,904 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:19:58,904 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146141149] [2022-03-15 14:19:58,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:19:58,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:19:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:19:59,095 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:59,095 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:19:59,095 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146141149] [2022-03-15 14:19:59,095 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146141149] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:19:59,095 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934107941] [2022-03-15 14:19:59,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:19:59,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:19:59,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:19:59,098 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 14:19:59,099 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 14:19:59,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 14:19:59,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:19:59,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 14:19:59,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:19:59,391 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:59,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:19:59,884 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:19:59,884 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934107941] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:19:59,884 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:19:59,884 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2022-03-15 14:19:59,884 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30338195] [2022-03-15 14:19:59,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:19:59,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:19:59,885 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:19:59,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:19:59,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:19:59,885 INFO L87 Difference]: Start difference. First operand 1558 states and 4359 transitions. Second operand has 21 states, 21 states have (on average 5.761904761904762) internal successors, (121), 21 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:20:00,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:20:00,753 INFO L93 Difference]: Finished difference Result 3244 states and 8812 transitions. [2022-03-15 14:20:00,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-15 14:20:00,754 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.761904761904762) internal successors, (121), 21 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-15 14:20:00,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:20:00,768 INFO L225 Difference]: With dead ends: 3244 [2022-03-15 14:20:00,768 INFO L226 Difference]: Without dead ends: 3244 [2022-03-15 14:20:00,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=475, Invalid=1417, Unknown=0, NotChecked=0, Total=1892 [2022-03-15 14:20:00,769 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 460 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:20:00,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 1317 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:20:00,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3244 states. [2022-03-15 14:20:00,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3244 to 1758. [2022-03-15 14:20:00,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1758 states, 1757 states have (on average 2.844052361980649) internal successors, (4997), 1757 states have internal predecessors, (4997), 0 states have call successors, (0), 0 states 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 14:20:00,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1758 states to 1758 states and 4997 transitions. [2022-03-15 14:20:00,804 INFO L78 Accepts]: Start accepts. Automaton has 1758 states and 4997 transitions. Word has length 72 [2022-03-15 14:20:00,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:20:00,804 INFO L470 AbstractCegarLoop]: Abstraction has 1758 states and 4997 transitions. [2022-03-15 14:20:00,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.761904761904762) internal successors, (121), 21 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:20:00,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1758 states and 4997 transitions. [2022-03-15 14:20:00,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-15 14:20:00,807 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:20:00,807 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:20:00,829 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 14:20:01,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:20:01,030 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:20:01,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:20:01,030 INFO L85 PathProgramCache]: Analyzing trace with hash 42894595, now seen corresponding path program 16 times [2022-03-15 14:20:01,030 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:20:01,030 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082542110] [2022-03-15 14:20:01,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:20:01,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:20:01,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:20:01,143 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:20:01,143 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:20:01,143 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082542110] [2022-03-15 14:20:01,144 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082542110] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:20:01,144 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339372235] [2022-03-15 14:20:01,144 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:20:01,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:20:01,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:20:01,145 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 14:20:01,146 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 14:20:01,191 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:20:01,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:20:01,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 14:20:01,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:20:01,396 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:20:01,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:20:01,895 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:20:01,895 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339372235] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:20:01,895 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:20:01,895 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2022-03-15 14:20:01,895 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852232866] [2022-03-15 14:20:01,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:20:01,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 14:20:01,896 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:20:01,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 14:20:01,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-03-15 14:20:01,896 INFO L87 Difference]: Start difference. First operand 1758 states and 4997 transitions. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:20:03,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:20:03,294 INFO L93 Difference]: Finished difference Result 2841 states and 7943 transitions. [2022-03-15 14:20:03,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-15 14:20:03,294 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-15 14:20:03,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:20:03,305 INFO L225 Difference]: With dead ends: 2841 [2022-03-15 14:20:03,305 INFO L226 Difference]: Without dead ends: 2793 [2022-03-15 14:20:03,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 135 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 730 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=518, Invalid=1834, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 14:20:03,307 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 386 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:20:03,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 1230 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:20:03,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2793 states. [2022-03-15 14:20:03,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2793 to 1778. [2022-03-15 14:20:03,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1777 states have (on average 2.831738885762521) internal successors, (5032), 1777 states have internal predecessors, (5032), 0 states have call successors, (0), 0 states 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 14:20:03,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 5032 transitions. [2022-03-15 14:20:03,367 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 5032 transitions. Word has length 72 [2022-03-15 14:20:03,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:20:03,367 INFO L470 AbstractCegarLoop]: Abstraction has 1778 states and 5032 transitions. [2022-03-15 14:20:03,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:20:03,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 5032 transitions. [2022-03-15 14:20:03,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-15 14:20:03,370 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:20:03,370 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:20:03,389 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 14:20:03,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:20:03,583 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:20:03,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:20:03,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1849763871, now seen corresponding path program 17 times [2022-03-15 14:20:03,584 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:20:03,584 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748242562] [2022-03-15 14:20:03,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:20:03,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:20:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:20:03,685 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:20:03,685 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:20:03,685 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748242562] [2022-03-15 14:20:03,685 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748242562] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:20:03,685 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062451692] [2022-03-15 14:20:03,685 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:20:03,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:20:03,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:20:03,687 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 14:20:03,707 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 14:20:03,738 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 14:20:03,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:20:03,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-15 14:20:03,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:20:03,916 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:20:03,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:20:04,245 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:20:04,245 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062451692] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:20:04,245 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:20:04,246 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 20 [2022-03-15 14:20:04,246 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287790296] [2022-03-15 14:20:04,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:20:04,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:20:04,246 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:20:04,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:20:04,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:20:04,247 INFO L87 Difference]: Start difference. First operand 1778 states and 5032 transitions. Second operand has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 14:20:06,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:20:06,059 INFO L93 Difference]: Finished difference Result 3643 states and 10012 transitions. [2022-03-15 14:20:06,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-15 14:20:06,060 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-15 14:20:06,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:20:06,066 INFO L225 Difference]: With dead ends: 3643 [2022-03-15 14:20:06,066 INFO L226 Difference]: Without dead ends: 3571 [2022-03-15 14:20:06,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1056 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=699, Invalid=3083, Unknown=0, NotChecked=0, Total=3782 [2022-03-15 14:20:06,067 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 497 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:20:06,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 1578 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:20:06,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3571 states. [2022-03-15 14:20:06,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3571 to 1922. [2022-03-15 14:20:06,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1922 states, 1921 states have (on average 2.8485163977095262) internal successors, (5472), 1921 states have internal predecessors, (5472), 0 states have call successors, (0), 0 states 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 14:20:06,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1922 states to 1922 states and 5472 transitions. [2022-03-15 14:20:06,110 INFO L78 Accepts]: Start accepts. Automaton has 1922 states and 5472 transitions. Word has length 72 [2022-03-15 14:20:06,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:20:06,110 INFO L470 AbstractCegarLoop]: Abstraction has 1922 states and 5472 transitions. [2022-03-15 14:20:06,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 14:20:06,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1922 states and 5472 transitions. [2022-03-15 14:20:06,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-15 14:20:06,114 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:20:06,114 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:20:06,130 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 14:20:06,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:20:06,331 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:20:06,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:20:06,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1491760117, now seen corresponding path program 18 times [2022-03-15 14:20:06,331 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:20:06,331 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207193450] [2022-03-15 14:20:06,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:20:06,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:20:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:20:06,427 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:20:06,428 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:20:06,428 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207193450] [2022-03-15 14:20:06,428 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207193450] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:20:06,428 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528401948] [2022-03-15 14:20:06,428 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:20:06,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:20:06,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:20:06,429 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 14:20:06,462 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 14:20:06,498 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-15 14:20:06,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:20:06,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 14:20:06,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:20:06,709 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:20:06,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:20:07,156 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:20:07,156 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528401948] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:20:07,156 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:20:07,156 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 19 [2022-03-15 14:20:07,156 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043535164] [2022-03-15 14:20:07,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:20:07,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:20:07,157 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:20:07,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:20:07,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:20:07,157 INFO L87 Difference]: Start difference. First operand 1922 states and 5472 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 14:20:07,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:20:07,423 INFO L93 Difference]: Finished difference Result 2403 states and 6796 transitions. [2022-03-15 14:20:07,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-15 14:20:07,423 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-15 14:20:07,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:20:07,427 INFO L225 Difference]: With dead ends: 2403 [2022-03-15 14:20:07,427 INFO L226 Difference]: Without dead ends: 2355 [2022-03-15 14:20:07,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=168, Invalid=482, Unknown=0, NotChecked=0, Total=650 [2022-03-15 14:20:07,427 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 218 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:20:07,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 824 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:20:07,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2355 states. [2022-03-15 14:20:07,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2355 to 1922. [2022-03-15 14:20:07,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1922 states, 1921 states have (on average 2.846434148880791) internal successors, (5468), 1921 states have internal predecessors, (5468), 0 states have call successors, (0), 0 states 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 14:20:07,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1922 states to 1922 states and 5468 transitions. [2022-03-15 14:20:07,455 INFO L78 Accepts]: Start accepts. Automaton has 1922 states and 5468 transitions. Word has length 72 [2022-03-15 14:20:07,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:20:07,455 INFO L470 AbstractCegarLoop]: Abstraction has 1922 states and 5468 transitions. [2022-03-15 14:20:07,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 14:20:07,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1922 states and 5468 transitions. [2022-03-15 14:20:07,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-15 14:20:07,458 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:20:07,458 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:20:07,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-03-15 14:20:07,674 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,SelfDestructingSolverStorable21 [2022-03-15 14:20:07,674 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:20:07,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:20:07,674 INFO L85 PathProgramCache]: Analyzing trace with hash -2112399269, now seen corresponding path program 19 times [2022-03-15 14:20:07,674 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:20:07,674 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144921778] [2022-03-15 14:20:07,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:20:07,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:20:07,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:20:07,824 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:20:07,824 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:20:07,824 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144921778] [2022-03-15 14:20:07,825 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144921778] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:20:07,825 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053853525] [2022-03-15 14:20:07,825 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:20:07,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:20:07,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:20:07,826 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 14:20:07,864 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 14:20:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:20:07,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-15 14:20:07,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:20:08,091 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:20:08,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:20:08,354 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:20:08,354 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053853525] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:20:08,354 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:20:08,354 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 11] total 23 [2022-03-15 14:20:08,354 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948865326] [2022-03-15 14:20:08,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:20:08,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-15 14:20:08,355 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:20:08,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-15 14:20:08,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2022-03-15 14:20:08,355 INFO L87 Difference]: Start difference. First operand 1922 states and 5468 transitions. Second operand has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:20:10,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:20:10,642 INFO L93 Difference]: Finished difference Result 4872 states and 13393 transitions. [2022-03-15 14:20:10,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-03-15 14:20:10,642 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-15 14:20:10,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:20:10,649 INFO L225 Difference]: With dead ends: 4872 [2022-03-15 14:20:10,650 INFO L226 Difference]: Without dead ends: 4770 [2022-03-15 14:20:10,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 185 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2298 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=901, Invalid=5741, Unknown=0, NotChecked=0, Total=6642 [2022-03-15 14:20:10,651 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 671 mSDsluCounter, 2264 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 2312 SdHoareTripleChecker+Invalid, 1372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:20:10,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [671 Valid, 2312 Invalid, 1372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 14:20:10,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4770 states. [2022-03-15 14:20:10,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4770 to 2070. [2022-03-15 14:20:10,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2070 states, 2069 states have (on average 2.887868535524408) internal successors, (5975), 2069 states have internal predecessors, (5975), 0 states have call successors, (0), 0 states 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 14:20:10,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 5975 transitions. [2022-03-15 14:20:10,691 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 5975 transitions. Word has length 72 [2022-03-15 14:20:10,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:20:10,691 INFO L470 AbstractCegarLoop]: Abstraction has 2070 states and 5975 transitions. [2022-03-15 14:20:10,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:20:10,691 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 5975 transitions. [2022-03-15 14:20:10,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-15 14:20:10,694 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:20:10,694 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:20:10,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-15 14:20:10,912 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,SelfDestructingSolverStorable22 [2022-03-15 14:20:10,912 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:20:10,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:20:10,912 INFO L85 PathProgramCache]: Analyzing trace with hash 934362475, now seen corresponding path program 20 times [2022-03-15 14:20:10,912 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:20:10,913 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788823785] [2022-03-15 14:20:10,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:20:10,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:20:10,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:20:11,032 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:20:11,033 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:20:11,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788823785] [2022-03-15 14:20:11,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788823785] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:20:11,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183470810] [2022-03-15 14:20:11,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:20:11,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:20:11,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:20:11,034 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 14:20:11,034 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 14:20:11,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:20:11,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:20:11,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 14:20:11,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:20:11,299 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:20:11,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:20:16,311 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:20:16,312 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183470810] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:20:16,312 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:20:16,312 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-03-15 14:20:16,312 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095878972] [2022-03-15 14:20:16,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:20:16,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:20:16,312 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:20:16,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:20:16,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:20:16,313 INFO L87 Difference]: Start difference. First operand 2070 states and 5975 transitions. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:20:17,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:20:17,806 INFO L93 Difference]: Finished difference Result 3970 states and 11033 transitions. [2022-03-15 14:20:17,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-15 14:20:17,807 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-15 14:20:17,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:20:17,813 INFO L225 Difference]: With dead ends: 3970 [2022-03-15 14:20:17,813 INFO L226 Difference]: Without dead ends: 3970 [2022-03-15 14:20:17,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=429, Invalid=1551, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 14:20:17,814 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 472 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:20:17,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [472 Valid, 1415 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:20:17,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3970 states. [2022-03-15 14:20:17,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3970 to 2386. [2022-03-15 14:20:17,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2386 states, 2385 states have (on average 2.893081761006289) internal successors, (6900), 2385 states have internal predecessors, (6900), 0 states have call successors, (0), 0 states 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 14:20:17,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2386 states to 2386 states and 6900 transitions. [2022-03-15 14:20:17,853 INFO L78 Accepts]: Start accepts. Automaton has 2386 states and 6900 transitions. Word has length 72 [2022-03-15 14:20:17,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:20:17,854 INFO L470 AbstractCegarLoop]: Abstraction has 2386 states and 6900 transitions. [2022-03-15 14:20:17,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:20:17,854 INFO L276 IsEmpty]: Start isEmpty. Operand 2386 states and 6900 transitions. [2022-03-15 14:20:17,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-15 14:20:17,857 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:20:17,857 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:20:17,873 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 14:20:18,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:20:18,062 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:20:18,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:20:18,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1604543435, now seen corresponding path program 21 times [2022-03-15 14:20:18,062 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:20:18,062 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554795538] [2022-03-15 14:20:18,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:20:18,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:20:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:20:18,158 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:20:18,158 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:20:18,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554795538] [2022-03-15 14:20:18,158 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554795538] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:20:18,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999597637] [2022-03-15 14:20:18,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:20:18,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:20:18,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:20:18,160 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 14:20:18,161 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 14:20:18,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 14:20:18,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:20:18,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 14:20:18,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:20:18,424 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:20:18,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:20:37,038 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:20:37,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999597637] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:20:37,038 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:20:37,038 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 20 [2022-03-15 14:20:37,038 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216449822] [2022-03-15 14:20:37,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:20:37,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:20:37,039 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:20:37,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:20:37,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:20:37,039 INFO L87 Difference]: Start difference. First operand 2386 states and 6900 transitions. Second operand has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:20:38,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:20:38,618 INFO L93 Difference]: Finished difference Result 3099 states and 8865 transitions. [2022-03-15 14:20:38,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-15 14:20:38,618 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-15 14:20:38,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:20:38,623 INFO L225 Difference]: With dead ends: 3099 [2022-03-15 14:20:38,623 INFO L226 Difference]: Without dead ends: 3051 [2022-03-15 14:20:38,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=326, Invalid=1156, Unknown=0, NotChecked=0, Total=1482 [2022-03-15 14:20:38,624 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 254 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:20:38,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 1377 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 14:20:38,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3051 states. [2022-03-15 14:20:38,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3051 to 2354. [2022-03-15 14:20:38,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2354 states, 2353 states have (on average 2.888227794305142) internal successors, (6796), 2353 states have internal predecessors, (6796), 0 states have call successors, (0), 0 states 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 14:20:38,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2354 states to 2354 states and 6796 transitions. [2022-03-15 14:20:38,659 INFO L78 Accepts]: Start accepts. Automaton has 2354 states and 6796 transitions. Word has length 72 [2022-03-15 14:20:38,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:20:38,659 INFO L470 AbstractCegarLoop]: Abstraction has 2354 states and 6796 transitions. [2022-03-15 14:20:38,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:20:38,659 INFO L276 IsEmpty]: Start isEmpty. Operand 2354 states and 6796 transitions. [2022-03-15 14:20:38,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-15 14:20:38,663 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:20:38,663 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:20:38,685 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 14:20:38,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:20:38,883 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:20:38,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:20:38,884 INFO L85 PathProgramCache]: Analyzing trace with hash -664216311, now seen corresponding path program 22 times [2022-03-15 14:20:38,884 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:20:38,884 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138308581] [2022-03-15 14:20:38,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:20:38,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:20:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:20:39,051 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:20:39,051 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:20:39,051 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138308581] [2022-03-15 14:20:39,051 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138308581] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:20:39,051 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607232043] [2022-03-15 14:20:39,051 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:20:39,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:20:39,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:20:39,053 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 14:20:39,053 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 14:20:39,110 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:20:39,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:20:39,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 14:20:39,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:20:39,344 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:20:39,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:20:44,692 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:20:44,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607232043] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:20:44,692 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:20:44,692 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-03-15 14:20:44,692 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843354501] [2022-03-15 14:20:44,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:20:44,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:20:44,693 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:20:44,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:20:44,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:20:44,693 INFO L87 Difference]: Start difference. First operand 2354 states and 6796 transitions. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:20:45,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:20:45,944 INFO L93 Difference]: Finished difference Result 3499 states and 9761 transitions. [2022-03-15 14:20:45,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-15 14:20:45,945 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-15 14:20:45,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:20:45,950 INFO L225 Difference]: With dead ends: 3499 [2022-03-15 14:20:45,950 INFO L226 Difference]: Without dead ends: 3499 [2022-03-15 14:20:45,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=451, Invalid=1529, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 14:20:45,951 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 463 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:20:45,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 1578 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:20:45,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3499 states. [2022-03-15 14:20:46,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3499 to 2410. [2022-03-15 14:20:46,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2410 states, 2409 states have (on average 2.893316728933167) internal successors, (6970), 2409 states have internal predecessors, (6970), 0 states have call successors, (0), 0 states 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 14:20:46,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2410 states to 2410 states and 6970 transitions. [2022-03-15 14:20:46,014 INFO L78 Accepts]: Start accepts. Automaton has 2410 states and 6970 transitions. Word has length 72 [2022-03-15 14:20:46,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:20:46,014 INFO L470 AbstractCegarLoop]: Abstraction has 2410 states and 6970 transitions. [2022-03-15 14:20:46,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:20:46,014 INFO L276 IsEmpty]: Start isEmpty. Operand 2410 states and 6970 transitions. [2022-03-15 14:20:46,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-15 14:20:46,017 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:20:46,018 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:20:46,037 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 14:20:46,235 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,SelfDestructingSolverStorable25 [2022-03-15 14:20:46,235 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:20:46,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:20:46,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1091845075, now seen corresponding path program 23 times [2022-03-15 14:20:46,236 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:20:46,236 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295875667] [2022-03-15 14:20:46,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:20:46,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:20:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:20:46,348 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:20:46,348 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:20:46,348 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295875667] [2022-03-15 14:20:46,349 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295875667] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:20:46,349 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091149002] [2022-03-15 14:20:46,349 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:20:46,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:20:46,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:20:46,360 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 14:20:46,361 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 14:20:46,431 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:20:46,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:20:46,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 14:20:46,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:20:46,614 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:20:46,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:21:05,912 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:21:05,912 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091149002] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:21:05,912 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:21:05,912 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 20 [2022-03-15 14:21:05,913 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105212554] [2022-03-15 14:21:05,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:21:05,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:21:05,913 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:21:05,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:21:05,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:21:05,913 INFO L87 Difference]: Start difference. First operand 2410 states and 6970 transitions. Second operand has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:21:08,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:21:08,043 INFO L93 Difference]: Finished difference Result 3577 states and 10146 transitions. [2022-03-15 14:21:08,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-15 14:21:08,044 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-15 14:21:08,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:21:08,049 INFO L225 Difference]: With dead ends: 3577 [2022-03-15 14:21:08,049 INFO L226 Difference]: Without dead ends: 3529 [2022-03-15 14:21:08,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 803 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=528, Invalid=2022, Unknown=0, NotChecked=0, Total=2550 [2022-03-15 14:21:08,050 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 381 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:21:08,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [381 Valid, 1306 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:21:08,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3529 states. [2022-03-15 14:21:08,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3529 to 2362. [2022-03-15 14:21:08,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2362 states, 2361 states have (on average 2.891147818720881) internal successors, (6826), 2361 states have internal predecessors, (6826), 0 states have call successors, (0), 0 states 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 14:21:08,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 6826 transitions. [2022-03-15 14:21:08,088 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 6826 transitions. Word has length 72 [2022-03-15 14:21:08,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:21:08,088 INFO L470 AbstractCegarLoop]: Abstraction has 2362 states and 6826 transitions. [2022-03-15 14:21:08,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:21:08,088 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 6826 transitions. [2022-03-15 14:21:08,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-15 14:21:08,091 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:21:08,092 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:21:08,107 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 14:21:08,295 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,SelfDestructingSolverStorable26 [2022-03-15 14:21:08,296 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:21:08,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:21:08,296 INFO L85 PathProgramCache]: Analyzing trace with hash 2000622901, now seen corresponding path program 24 times [2022-03-15 14:21:08,296 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:21:08,296 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672639829] [2022-03-15 14:21:08,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:21:08,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:21:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:21:08,394 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:21:08,394 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:21:08,394 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672639829] [2022-03-15 14:21:08,394 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672639829] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:21:08,394 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722198764] [2022-03-15 14:21:08,394 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:21:08,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:21:08,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:21:08,396 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 14:21:08,397 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 14:21:08,457 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 14:21:08,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:21:08,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 14:21:08,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:21:08,659 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:21:08,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:21:27,720 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:21:27,720 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722198764] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:21:27,720 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:21:27,720 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 20 [2022-03-15 14:21:27,721 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087589422] [2022-03-15 14:21:27,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:21:27,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:21:27,721 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:21:27,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:21:27,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:21:27,722 INFO L87 Difference]: Start difference. First operand 2362 states and 6826 transitions. Second operand has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:21:28,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:21:28,822 INFO L93 Difference]: Finished difference Result 3089 states and 8818 transitions. [2022-03-15 14:21:28,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-15 14:21:28,822 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-15 14:21:28,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:21:28,826 INFO L225 Difference]: With dead ends: 3089 [2022-03-15 14:21:28,827 INFO L226 Difference]: Without dead ends: 3017 [2022-03-15 14:21:28,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=252, Invalid=938, Unknown=0, NotChecked=0, Total=1190 [2022-03-15 14:21:28,827 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 276 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:21:28,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 1075 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:21:28,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2022-03-15 14:21:28,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 2398. [2022-03-15 14:21:28,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2397 states have (on average 2.8873591989987486) internal successors, (6921), 2397 states have internal predecessors, (6921), 0 states have call successors, (0), 0 states 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 14:21:28,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 6921 transitions. [2022-03-15 14:21:28,860 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 6921 transitions. Word has length 72 [2022-03-15 14:21:28,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:21:28,860 INFO L470 AbstractCegarLoop]: Abstraction has 2398 states and 6921 transitions. [2022-03-15 14:21:28,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:21:28,860 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 6921 transitions. [2022-03-15 14:21:28,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-15 14:21:28,863 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:21:28,863 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:21:28,879 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 14:21:29,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-03-15 14:21:29,079 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:21:29,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:21:29,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1809397223, now seen corresponding path program 25 times [2022-03-15 14:21:29,080 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:21:29,080 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302085939] [2022-03-15 14:21:29,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:21:29,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:21:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:21:29,248 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:21:29,248 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:21:29,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302085939] [2022-03-15 14:21:29,248 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302085939] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:21:29,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530942577] [2022-03-15 14:21:29,248 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:21:29,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:21:29,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:21:29,260 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 14:21:29,261 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 14:21:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:21:29,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 14:21:29,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:21:29,517 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:21:29,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:21:32,619 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:21:32,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530942577] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:21:32,619 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:21:32,619 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-03-15 14:21:32,619 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224845343] [2022-03-15 14:21:32,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:21:32,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:21:32,620 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:21:32,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:21:32,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:21:32,620 INFO L87 Difference]: Start difference. First operand 2398 states and 6921 transitions. Second operand has 20 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:21:33,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:21:33,966 INFO L93 Difference]: Finished difference Result 4265 states and 11995 transitions. [2022-03-15 14:21:33,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-15 14:21:33,967 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-15 14:21:33,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:21:33,973 INFO L225 Difference]: With dead ends: 4265 [2022-03-15 14:21:33,974 INFO L226 Difference]: Without dead ends: 4265 [2022-03-15 14:21:33,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=512, Invalid=1558, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 14:21:33,974 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 539 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:21:33,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [539 Valid, 1340 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:21:33,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4265 states. [2022-03-15 14:21:34,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4265 to 2714. [2022-03-15 14:21:34,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2714 states, 2713 states have (on average 2.912642830814596) internal successors, (7902), 2713 states have internal predecessors, (7902), 0 states have call successors, (0), 0 states 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 14:21:34,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2714 states to 2714 states and 7902 transitions. [2022-03-15 14:21:34,022 INFO L78 Accepts]: Start accepts. Automaton has 2714 states and 7902 transitions. Word has length 72 [2022-03-15 14:21:34,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:21:34,022 INFO L470 AbstractCegarLoop]: Abstraction has 2714 states and 7902 transitions. [2022-03-15 14:21:34,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:21:34,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2714 states and 7902 transitions. [2022-03-15 14:21:34,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-15 14:21:34,027 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:21:34,027 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:21:34,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-03-15 14:21:34,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-03-15 14:21:34,244 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:21:34,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:21:34,245 INFO L85 PathProgramCache]: Analyzing trace with hash -53335837, now seen corresponding path program 26 times [2022-03-15 14:21:34,245 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:21:34,245 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17858383] [2022-03-15 14:21:34,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:21:34,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:21:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:21:34,360 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:21:34,360 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:21:34,360 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17858383] [2022-03-15 14:21:34,361 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17858383] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:21:34,361 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670805890] [2022-03-15 14:21:34,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:21:34,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:21:34,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:21:34,362 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 14:21:34,379 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 14:21:34,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:21:34,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:21:34,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 14:21:34,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:21:34,641 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:21:34,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:21:54,976 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:21:54,977 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670805890] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:21:54,977 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:21:54,977 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-15 14:21:54,977 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925093278] [2022-03-15 14:21:54,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:21:54,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:21:54,977 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:21:54,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:21:54,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:21:54,978 INFO L87 Difference]: Start difference. First operand 2714 states and 7902 transitions. Second operand has 19 states, 19 states have (on average 4.684210526315789) internal successors, (89), 19 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 14:21:57,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:21:57,361 INFO L93 Difference]: Finished difference Result 4279 states and 12280 transitions. [2022-03-15 14:21:57,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-15 14:21:57,362 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.684210526315789) internal successors, (89), 19 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 72 [2022-03-15 14:21:57,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:21:57,369 INFO L225 Difference]: With dead ends: 4279 [2022-03-15 14:21:57,369 INFO L226 Difference]: Without dead ends: 4231 [2022-03-15 14:21:57,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 166 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=599, Invalid=2263, Unknown=0, NotChecked=0, Total=2862 [2022-03-15 14:21:57,370 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 591 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:21:57,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [591 Valid, 1023 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:21:57,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4231 states. [2022-03-15 14:21:57,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4231 to 2878. [2022-03-15 14:21:57,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2878 states, 2877 states have (on average 2.9283976364268334) internal successors, (8425), 2877 states have internal predecessors, (8425), 0 states have call successors, (0), 0 states 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 14:21:57,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2878 states to 2878 states and 8425 transitions. [2022-03-15 14:21:57,439 INFO L78 Accepts]: Start accepts. Automaton has 2878 states and 8425 transitions. Word has length 72 [2022-03-15 14:21:57,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:21:57,440 INFO L470 AbstractCegarLoop]: Abstraction has 2878 states and 8425 transitions. [2022-03-15 14:21:57,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.684210526315789) internal successors, (89), 19 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 14:21:57,440 INFO L276 IsEmpty]: Start isEmpty. Operand 2878 states and 8425 transitions. [2022-03-15 14:21:57,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-15 14:21:57,444 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:21:57,444 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:21:57,460 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 14:21:57,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:21:57,659 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:21:57,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:21:57,660 INFO L85 PathProgramCache]: Analyzing trace with hash 855441989, now seen corresponding path program 27 times [2022-03-15 14:21:57,660 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:21:57,660 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554684812] [2022-03-15 14:21:57,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:21:57,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:21:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:21:57,769 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:21:57,769 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:21:57,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554684812] [2022-03-15 14:21:57,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554684812] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:21:57,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362338323] [2022-03-15 14:21:57,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:21:57,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:21:57,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:21:57,770 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 14:21:57,771 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 14:21:57,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 14:21:57,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:21:57,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 14:21:57,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:21:58,032 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:21:58,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:22:21,454 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:22:21,454 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362338323] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:22:21,455 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:22:21,455 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-15 14:22:21,455 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707389378] [2022-03-15 14:22:21,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:22:21,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:22:21,455 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:22:21,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:22:21,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:22:21,456 INFO L87 Difference]: Start difference. First operand 2878 states and 8425 transitions. Second operand has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 14:22:24,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:22:24,222 INFO L93 Difference]: Finished difference Result 4349 states and 12413 transitions. [2022-03-15 14:22:24,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-15 14:22:24,222 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-15 14:22:24,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:22:24,237 INFO L225 Difference]: With dead ends: 4349 [2022-03-15 14:22:24,237 INFO L226 Difference]: Without dead ends: 4277 [2022-03-15 14:22:24,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 158 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=412, Invalid=1568, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 14:22:24,238 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 404 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:22:24,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [404 Valid, 1017 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 14:22:24,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4277 states. [2022-03-15 14:22:24,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4277 to 2794. [2022-03-15 14:22:24,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2794 states, 2793 states have (on average 2.9308986752595776) internal successors, (8186), 2793 states have internal predecessors, (8186), 0 states have call successors, (0), 0 states 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 14:22:24,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2794 states to 2794 states and 8186 transitions. [2022-03-15 14:22:24,277 INFO L78 Accepts]: Start accepts. Automaton has 2794 states and 8186 transitions. Word has length 72 [2022-03-15 14:22:24,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:22:24,278 INFO L470 AbstractCegarLoop]: Abstraction has 2794 states and 8186 transitions. [2022-03-15 14:22:24,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 14:22:24,278 INFO L276 IsEmpty]: Start isEmpty. Operand 2794 states and 8186 transitions. [2022-03-15 14:22:24,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-15 14:22:24,281 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:22:24,282 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:22:24,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-03-15 14:22:24,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:22:24,487 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:22:24,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:22:24,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1488314149, now seen corresponding path program 28 times [2022-03-15 14:22:24,488 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:22:24,488 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642367131] [2022-03-15 14:22:24,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:22:24,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:22:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:22:24,582 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:22:24,583 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:22:24,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642367131] [2022-03-15 14:22:24,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642367131] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:22:24,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272522714] [2022-03-15 14:22:24,583 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:22:24,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:22:24,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:22:24,588 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 14:22:24,589 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 14:22:24,648 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:22:24,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:22:24,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 14:22:24,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:22:24,822 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:22:24,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:22:44,222 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:22:44,223 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272522714] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:22:44,223 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:22:44,223 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-15 14:22:44,223 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602417558] [2022-03-15 14:22:44,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:22:44,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:22:44,223 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:22:44,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:22:44,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:22:44,224 INFO L87 Difference]: Start difference. First operand 2794 states and 8186 transitions. Second operand has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 14:22:44,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:22:44,758 INFO L93 Difference]: Finished difference Result 3493 states and 10089 transitions. [2022-03-15 14:22:44,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 14:22:44,759 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-15 14:22:44,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:22:44,765 INFO L225 Difference]: With dead ends: 3493 [2022-03-15 14:22:44,765 INFO L226 Difference]: Without dead ends: 3397 [2022-03-15 14:22:44,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=181, Invalid=689, Unknown=0, NotChecked=0, Total=870 [2022-03-15 14:22:44,766 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 257 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:22:44,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 877 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:22:44,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3397 states. [2022-03-15 14:22:44,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3397 to 2790. [2022-03-15 14:22:44,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2790 states, 2789 states have (on average 2.9282897095733236) internal successors, (8167), 2789 states have internal predecessors, (8167), 0 states have call successors, (0), 0 states 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 14:22:44,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2790 states to 2790 states and 8167 transitions. [2022-03-15 14:22:44,815 INFO L78 Accepts]: Start accepts. Automaton has 2790 states and 8167 transitions. Word has length 72 [2022-03-15 14:22:44,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:22:44,815 INFO L470 AbstractCegarLoop]: Abstraction has 2790 states and 8167 transitions. [2022-03-15 14:22:44,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 14:22:44,815 INFO L276 IsEmpty]: Start isEmpty. Operand 2790 states and 8167 transitions. [2022-03-15 14:22:44,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-15 14:22:44,819 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:22:44,819 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:22:44,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-15 14:22:45,023 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,SelfDestructingSolverStorable31 [2022-03-15 14:22:45,023 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:22:45,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:22:45,025 INFO L85 PathProgramCache]: Analyzing trace with hash 191604221, now seen corresponding path program 29 times [2022-03-15 14:22:45,025 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:22:45,025 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861850556] [2022-03-15 14:22:45,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:22:45,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:22:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:22:45,295 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:22:45,295 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:22:45,295 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861850556] [2022-03-15 14:22:45,295 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861850556] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:22:45,296 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132327133] [2022-03-15 14:22:45,296 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:22:45,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:22:45,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:22:45,298 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 14:22:45,299 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 14:22:45,364 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 14:22:45,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:22:45,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:22:45,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2022-03-15 14:31:40,856 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-15 14:31:40,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-03-15 14:31:40,901 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-15 14:31:40,901 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 14:31:41,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:31:41,067 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 75 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-5-1 context. [2022-03-15 14:31:41,068 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-15 14:31:41,068 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-15 14:31:41,070 INFO L732 BasicCegarLoop]: Path program histogram: [29, 2, 1, 1] [2022-03-15 14:31:41,072 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 14:31:41,072 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 14:31:41,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 02:31:41 BasicIcfg [2022-03-15 14:31:41,073 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 14:31:41,074 INFO L158 Benchmark]: Toolchain (without parser) took 779962.11ms. Allocated memory was 174.1MB in the beginning and 256.9MB in the end (delta: 82.8MB). Free memory was 122.4MB in the beginning and 143.4MB in the end (delta: -21.0MB). Peak memory consumption was 157.5MB. Max. memory is 8.0GB. [2022-03-15 14:31:41,074 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 174.1MB. Free memory is still 138.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 14:31:41,074 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.98ms. Allocated memory was 174.1MB in the beginning and 213.9MB in the end (delta: 39.8MB). Free memory was 122.1MB in the beginning and 189.9MB in the end (delta: -67.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-15 14:31:41,074 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.15ms. Allocated memory is still 213.9MB. Free memory was 189.9MB in the beginning and 188.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 14:31:41,074 INFO L158 Benchmark]: Boogie Preprocessor took 32.20ms. Allocated memory is still 213.9MB. Free memory was 188.3MB in the beginning and 186.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 14:31:41,074 INFO L158 Benchmark]: RCFGBuilder took 273.93ms. Allocated memory is still 213.9MB. Free memory was 186.8MB in the beginning and 173.7MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-03-15 14:31:41,075 INFO L158 Benchmark]: TraceAbstraction took 779428.53ms. Allocated memory was 213.9MB in the beginning and 256.9MB in the end (delta: 43.0MB). Free memory was 173.2MB in the beginning and 143.4MB in the end (delta: 29.8MB). Peak memory consumption was 169.5MB. Max. memory is 8.0GB. [2022-03-15 14:31:41,077 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 174.1MB. Free memory is still 138.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 194.98ms. Allocated memory was 174.1MB in the beginning and 213.9MB in the end (delta: 39.8MB). Free memory was 122.1MB in the beginning and 189.9MB in the end (delta: -67.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.15ms. Allocated memory is still 213.9MB. Free memory was 189.9MB in the beginning and 188.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.20ms. Allocated memory is still 213.9MB. Free memory was 188.3MB in the beginning and 186.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 273.93ms. Allocated memory is still 213.9MB. Free memory was 186.8MB in the beginning and 173.7MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 779428.53ms. Allocated memory was 213.9MB in the beginning and 256.9MB in the end (delta: 43.0MB). Free memory was 173.2MB in the beginning and 143.4MB in the end (delta: 29.8MB). Peak memory consumption was 169.5MB. 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: 78]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 75 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-5-1 context. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 75 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-5-1 context. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 75 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-5-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 96 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 779.3s, OverallIterations: 33, TraceHistogramMax: 2, PathProgramHistogramMax: 29, EmptinessCheckTime: 0.1s, AutomataDifference: 46.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12599 SdHoareTripleChecker+Valid, 14.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12599 mSDsluCounter, 36953 SdHoareTripleChecker+Invalid, 12.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 34764 mSDsCounter, 1551 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15237 IncrementalHoareTripleChecker+Invalid, 16788 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1551 mSolverCounterUnsat, 4067 mSDtfsCounter, 15237 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5633 GetRequests, 4217 SyntacticMatches, 39 SemanticMatches, 1377 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23626 ImplicationChecksByTransitivity, 37.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2878occurred in iteration=30, InterpolantAutomatonStates: 1214, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 32 MinimizatonAttempts, 31640 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 187.1s InterpolantComputationTime, 4392 NumberOfCodeBlocks, 4285 NumberOfCodeBlocksAsserted, 96 NumberOfCheckSat, 6372 ConstructedInterpolants, 0 QuantifiedInterpolants, 33388 SizeOfPredicates, 311 NumberOfNonLiveVariables, 4488 ConjunctsInSsa, 359 ConjunctsInUnsatCore, 91 InterpolantComputations, 4 PerfectInterpolantSequences, 301/641 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