/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-simple-queue.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-bc289cb [2022-01-28 13:40:57,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-28 13:40:57,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-28 13:40:57,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-28 13:40:57,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-28 13:40:57,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-28 13:40:57,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-28 13:40:57,551 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-28 13:40:57,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-28 13:40:57,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-28 13:40:57,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-28 13:40:57,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-28 13:40:57,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-28 13:40:57,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-28 13:40:57,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-28 13:40:57,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-28 13:40:57,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-28 13:40:57,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-28 13:40:57,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-28 13:40:57,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-28 13:40:57,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-28 13:40:57,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-28 13:40:57,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-28 13:40:57,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-28 13:40:57,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-28 13:40:57,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-28 13:40:57,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-28 13:40:57,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-28 13:40:57,585 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 [2022-01-28 13:40:57,608 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-28 13:40:57,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-28 13:40:57,608 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-28 13:40:57,608 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-28 13:40:57,609 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-28 13:40:57,609 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-28 13:40:57,609 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-28 13:40:57,609 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-28 13:40:57,609 INFO L138 SettingsManager]: * Use SBE=true [2022-01-28 13:40:57,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-28 13:40:57,609 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-28 13:40:57,609 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-28 13:40:57,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-28 13:40:57,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-28 13:40:57,610 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-28 13:40:57,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-28 13:40:57,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-28 13:40:57,610 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-28 13:40:57,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-28 13:40:57,610 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-28 13:40:57,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-28 13:40:57,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-28 13:40:57,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-28 13:40:57,610 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-28 13:40:57,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-28 13:40:57,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-28 13:40:57,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-28 13:40:57,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-28 13:40:57,611 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-28 13:40:57,611 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-28 13:40:57,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-28 13:40:57,611 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-28 13:40:57,611 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-28 13:40:57,611 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-28 13:40:57,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-28 13:40:57,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-28 13:40:57,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-28 13:40:57,826 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-28 13:40:57,827 INFO L275 PluginConnector]: CDTParser initialized [2022-01-28 13:40:57,827 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-simple-queue.wvr.c [2022-01-28 13:40:57,868 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8125aaf21/91d0508d3e744530a1c30a7346ead641/FLAG211e80821 [2022-01-28 13:40:58,242 INFO L306 CDTParser]: Found 1 translation units. [2022-01-28 13:40:58,242 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-queue.wvr.c [2022-01-28 13:40:58,251 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8125aaf21/91d0508d3e744530a1c30a7346ead641/FLAG211e80821 [2022-01-28 13:40:58,263 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8125aaf21/91d0508d3e744530a1c30a7346ead641 [2022-01-28 13:40:58,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-28 13:40:58,267 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-28 13:40:58,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-28 13:40:58,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-28 13:40:58,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-28 13:40:58,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:40:58" (1/1) ... [2022-01-28 13:40:58,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f2a396b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:58, skipping insertion in model container [2022-01-28 13:40:58,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:40:58" (1/1) ... [2022-01-28 13:40:58,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-28 13:40:58,293 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-28 13:40:58,475 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-queue.wvr.c[2438,2451] [2022-01-28 13:40:58,485 INFO L209 PostProcessor]: Analyzing one entry point: main [2022-01-28 13:40:58,494 INFO L203 MainTranslator]: Completed pre-run [2022-01-28 13:40:58,521 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-simple-queue.wvr.c[2438,2451] [2022-01-28 13:40:58,527 INFO L209 PostProcessor]: Analyzing one entry point: main [2022-01-28 13:40:58,536 INFO L208 MainTranslator]: Completed translation [2022-01-28 13:40:58,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:58 WrapperNode [2022-01-28 13:40:58,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-28 13:40:58,538 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-28 13:40:58,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-28 13:40:58,538 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-28 13:40:58,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:58" (1/1) ... [2022-01-28 13:40:58,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:58" (1/1) ... [2022-01-28 13:40:58,578 INFO L137 Inliner]: procedures = 24, calls = 33, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 128 [2022-01-28 13:40:58,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-28 13:40:58,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-28 13:40:58,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-28 13:40:58,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-28 13:40:58,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:58" (1/1) ... [2022-01-28 13:40:58,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:58" (1/1) ... [2022-01-28 13:40:58,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:58" (1/1) ... [2022-01-28 13:40:58,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:58" (1/1) ... [2022-01-28 13:40:58,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:58" (1/1) ... [2022-01-28 13:40:58,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:58" (1/1) ... [2022-01-28 13:40:58,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:58" (1/1) ... [2022-01-28 13:40:58,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-28 13:40:58,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-28 13:40:58,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-28 13:40:58,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-28 13:40:58,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:58" (1/1) ... [2022-01-28 13:40:58,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-28 13:40:58,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:40:58,635 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) [2022-01-28 13:40:58,641 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 [2022-01-28 13:40:58,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-28 13:40:58,657 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-28 13:40:58,657 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-28 13:40:58,657 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-28 13:40:58,657 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-28 13:40:58,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-28 13:40:58,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-28 13:40:58,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-28 13:40:58,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-28 13:40:58,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-28 13:40:58,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-28 13:40:58,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-28 13:40:58,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-28 13:40:58,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-28 13:40:58,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-28 13:40:58,659 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-28 13:40:58,716 INFO L234 CfgBuilder]: Building ICFG [2022-01-28 13:40:58,717 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-28 13:40:58,865 INFO L275 CfgBuilder]: Performing block encoding [2022-01-28 13:40:58,941 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-28 13:40:58,942 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-28 13:40:58,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:40:58 BoogieIcfgContainer [2022-01-28 13:40:58,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-28 13:40:58,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-28 13:40:58,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-28 13:40:58,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-28 13:40:58,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 01:40:58" (1/3) ... [2022-01-28 13:40:58,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26bbfcdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:40:58, skipping insertion in model container [2022-01-28 13:40:58,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:40:58" (2/3) ... [2022-01-28 13:40:58,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26bbfcdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:40:58, skipping insertion in model container [2022-01-28 13:40:58,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:40:58" (3/3) ... [2022-01-28 13:40:58,953 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-simple-queue.wvr.c [2022-01-28 13:40:58,956 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-28 13:40:58,956 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-28 13:40:58,956 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-28 13:40:58,956 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-28 13:40:58,987 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,988 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,988 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,988 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,988 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,988 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,988 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,988 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,989 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,989 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,989 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,989 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,989 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,989 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,989 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,989 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,989 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,990 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,990 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,990 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,990 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,990 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,990 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,990 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,991 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,991 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,991 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,991 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,991 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,991 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,991 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,991 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,991 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,992 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,992 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,992 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,992 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,992 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,992 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,992 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,994 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,994 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,994 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,994 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,995 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,995 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,995 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,995 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,996 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,996 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,996 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,996 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,996 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,996 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:40:58,998 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-28 13:40:59,032 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-28 13:40:59,038 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, 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 [2022-01-28 13:40:59,039 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-28 13:40:59,052 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 118 places, 120 transitions, 256 flow [2022-01-28 13:40:59,104 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 335 states, 334 states have (on average 2.42814371257485) internal successors, (811), 334 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:40:59,107 INFO L276 IsEmpty]: Start isEmpty. Operand has 335 states, 334 states have (on average 2.42814371257485) internal successors, (811), 334 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:40:59,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-28 13:40:59,124 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:40:59,124 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:40:59,125 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:40:59,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:40:59,129 INFO L85 PathProgramCache]: Analyzing trace with hash -571534812, now seen corresponding path program 1 times [2022-01-28 13:40:59,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:40:59,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747802465] [2022-01-28 13:40:59,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:40:59,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:40:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:40:59,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:40:59,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:40:59,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747802465] [2022-01-28 13:40:59,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747802465] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 13:40:59,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 13:40:59,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-28 13:40:59,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107101832] [2022-01-28 13:40:59,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 13:40:59,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-28 13:40:59,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:40:59,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-28 13:40:59,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-28 13:40:59,331 INFO L87 Difference]: Start difference. First operand has 335 states, 334 states have (on average 2.42814371257485) internal successors, (811), 334 states have internal predecessors, (811), 0 states have call successors, (0), 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 42.5) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:40:59,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:40:59,356 INFO L93 Difference]: Finished difference Result 335 states and 742 transitions. [2022-01-28 13:40:59,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-28 13:40:59,358 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-28 13:40:59,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:40:59,366 INFO L225 Difference]: With dead ends: 335 [2022-01-28 13:40:59,366 INFO L226 Difference]: Without dead ends: 332 [2022-01-28 13:40:59,367 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 [2022-01-28 13:40:59,369 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 13:40:59,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 97 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 13:40:59,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-01-28 13:40:59,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2022-01-28 13:40:59,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 2.2326283987915407) internal successors, (739), 331 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:40:59,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 739 transitions. [2022-01-28 13:40:59,425 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 739 transitions. Word has length 85 [2022-01-28 13:40:59,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:40:59,425 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 739 transitions. [2022-01-28 13:40:59,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:40:59,425 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 739 transitions. [2022-01-28 13:40:59,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-28 13:40:59,428 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:40:59,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:40:59,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-28 13:40:59,428 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:40:59,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:40:59,429 INFO L85 PathProgramCache]: Analyzing trace with hash -839991221, now seen corresponding path program 1 times [2022-01-28 13:40:59,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:40:59,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963722001] [2022-01-28 13:40:59,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:40:59,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:40:59,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:40:59,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:40:59,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:40:59,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963722001] [2022-01-28 13:40:59,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963722001] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 13:40:59,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 13:40:59,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-28 13:40:59,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518001495] [2022-01-28 13:40:59,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 13:40:59,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-28 13:40:59,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:40:59,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-28 13:40:59,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-28 13:40:59,624 INFO L87 Difference]: Start difference. First operand 332 states and 739 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:40:59,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:40:59,700 INFO L93 Difference]: Finished difference Result 555 states and 1326 transitions. [2022-01-28 13:40:59,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-28 13:40:59,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-01-28 13:40:59,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:40:59,704 INFO L225 Difference]: With dead ends: 555 [2022-01-28 13:40:59,705 INFO L226 Difference]: Without dead ends: 425 [2022-01-28 13:40:59,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-28 13:40:59,706 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 16 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 13:40:59,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 306 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 13:40:59,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-01-28 13:40:59,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 363. [2022-01-28 13:40:59,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 2.270718232044199) internal successors, (822), 362 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:40:59,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 822 transitions. [2022-01-28 13:40:59,735 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 822 transitions. Word has length 87 [2022-01-28 13:40:59,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:40:59,736 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 822 transitions. [2022-01-28 13:40:59,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:40:59,736 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 822 transitions. [2022-01-28 13:40:59,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-28 13:40:59,738 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:40:59,738 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:40:59,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-28 13:40:59,739 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:40:59,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:40:59,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1523956765, now seen corresponding path program 1 times [2022-01-28 13:40:59,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:40:59,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103880490] [2022-01-28 13:40:59,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:40:59,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:40:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:40:59,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:40:59,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:40:59,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103880490] [2022-01-28 13:40:59,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103880490] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 13:40:59,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 13:40:59,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-28 13:40:59,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796906512] [2022-01-28 13:40:59,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 13:40:59,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-28 13:40:59,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:40:59,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-28 13:40:59,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-28 13:40:59,818 INFO L87 Difference]: Start difference. First operand 363 states and 822 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:40:59,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:40:59,834 INFO L93 Difference]: Finished difference Result 498 states and 1124 transitions. [2022-01-28 13:40:59,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-28 13:40:59,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-01-28 13:40:59,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:40:59,836 INFO L225 Difference]: With dead ends: 498 [2022-01-28 13:40:59,836 INFO L226 Difference]: Without dead ends: 417 [2022-01-28 13:40:59,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-28 13:40:59,841 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 9 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 13:40:59,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 147 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 13:40:59,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-01-28 13:40:59,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2022-01-28 13:40:59,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 2.2716346153846154) internal successors, (945), 416 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:40:59,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 945 transitions. [2022-01-28 13:40:59,862 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 945 transitions. Word has length 90 [2022-01-28 13:40:59,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:40:59,864 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 945 transitions. [2022-01-28 13:40:59,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:40:59,864 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 945 transitions. [2022-01-28 13:40:59,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-28 13:40:59,866 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:40:59,866 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:40:59,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-28 13:40:59,866 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:40:59,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:40:59,867 INFO L85 PathProgramCache]: Analyzing trace with hash 764156185, now seen corresponding path program 1 times [2022-01-28 13:40:59,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:40:59,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412205314] [2022-01-28 13:40:59,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:40:59,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:40:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:40:59,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-28 13:40:59,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:40:59,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412205314] [2022-01-28 13:40:59,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412205314] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 13:40:59,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 13:40:59,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-28 13:40:59,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451601873] [2022-01-28 13:40:59,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 13:40:59,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-28 13:40:59,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:40:59,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-28 13:40:59,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-28 13:40:59,964 INFO L87 Difference]: Start difference. First operand 417 states and 945 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 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) [2022-01-28 13:41:00,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:41:00,047 INFO L93 Difference]: Finished difference Result 486 states and 1066 transitions. [2022-01-28 13:41:00,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-28 13:41:00,048 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 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 93 [2022-01-28 13:41:00,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:41:00,050 INFO L225 Difference]: With dead ends: 486 [2022-01-28 13:41:00,050 INFO L226 Difference]: Without dead ends: 423 [2022-01-28 13:41:00,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-28 13:41:00,058 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 226 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 13:41:00,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 267 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 13:41:00,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-01-28 13:41:00,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 418. [2022-01-28 13:41:00,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 2.2685851318944845) internal successors, (946), 417 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:00,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 946 transitions. [2022-01-28 13:41:00,075 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 946 transitions. Word has length 93 [2022-01-28 13:41:00,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:41:00,076 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 946 transitions. [2022-01-28 13:41:00,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 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) [2022-01-28 13:41:00,077 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 946 transitions. [2022-01-28 13:41:00,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-28 13:41:00,079 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:41:00,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:41:00,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-28 13:41:00,080 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:41:00,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:41:00,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1391817806, now seen corresponding path program 1 times [2022-01-28 13:41:00,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:41:00,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386840836] [2022-01-28 13:41:00,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:41:00,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:41:00,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:41:00,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:41:00,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:41:00,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386840836] [2022-01-28 13:41:00,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386840836] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:41:00,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693875949] [2022-01-28 13:41:00,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:41:00,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:41:00,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:41:00,877 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) [2022-01-28 13:41:00,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-28 13:41:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:41:00,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 51 conjunts are in the unsatisfiable core [2022-01-28 13:41:00,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:41:01,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-28 13:41:01,417 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-28 13:41:01,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-28 13:41:01,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-28 13:41:01,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-28 13:41:02,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-28 13:41:02,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-28 13:41:02,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:41:02,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:41:02,240 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_69 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_69) c_~queue~0.base) (+ (* c_~front~0 4) c_~queue~0.offset)))) is different from false [2022-01-28 13:41:02,883 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:41:02,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 45 [2022-01-28 13:41:02,891 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:41:02,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 100 [2022-01-28 13:41:02,899 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:41:02,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 61 [2022-01-28 13:41:02,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 42 [2022-01-28 13:41:03,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-01-28 13:41:03,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693875949] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:41:03,893 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:41:03,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 22] total 52 [2022-01-28 13:41:03,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832077858] [2022-01-28 13:41:03,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:41:03,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-28 13:41:03,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:41:03,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-28 13:41:03,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2317, Unknown=8, NotChecked=98, Total=2652 [2022-01-28 13:41:03,896 INFO L87 Difference]: Start difference. First operand 418 states and 946 transitions. Second operand has 52 states, 52 states have (on average 4.25) internal successors, (221), 52 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:06,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:41:06,313 INFO L93 Difference]: Finished difference Result 1874 states and 4678 transitions. [2022-01-28 13:41:06,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-28 13:41:06,313 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 4.25) internal successors, (221), 52 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-01-28 13:41:06,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:41:06,319 INFO L225 Difference]: With dead ends: 1874 [2022-01-28 13:41:06,319 INFO L226 Difference]: Without dead ends: 1484 [2022-01-28 13:41:06,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 171 SyntacticMatches, 8 SemanticMatches, 81 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1645 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1100, Invalid=5531, Unknown=15, NotChecked=160, Total=6806 [2022-01-28 13:41:06,321 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 1744 mSDsluCounter, 3058 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1744 SdHoareTripleChecker+Valid, 2895 SdHoareTripleChecker+Invalid, 1723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 736 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-28 13:41:06,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1744 Valid, 2895 Invalid, 1723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 867 Invalid, 0 Unknown, 736 Unchecked, 0.5s Time] [2022-01-28 13:41:06,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2022-01-28 13:41:06,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 745. [2022-01-28 13:41:06,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 744 states have (on average 2.450268817204301) internal successors, (1823), 744 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:06,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1823 transitions. [2022-01-28 13:41:06,339 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1823 transitions. Word has length 100 [2022-01-28 13:41:06,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:41:06,339 INFO L470 AbstractCegarLoop]: Abstraction has 745 states and 1823 transitions. [2022-01-28 13:41:06,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 4.25) internal successors, (221), 52 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:06,340 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1823 transitions. [2022-01-28 13:41:06,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-28 13:41:06,341 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:41:06,341 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:41:06,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-28 13:41:06,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:41:06,559 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:41:06,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:41:06,559 INFO L85 PathProgramCache]: Analyzing trace with hash 205024512, now seen corresponding path program 2 times [2022-01-28 13:41:06,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:41:06,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788845087] [2022-01-28 13:41:06,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:41:06,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:41:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:41:06,660 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-28 13:41:06,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:41:06,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788845087] [2022-01-28 13:41:06,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788845087] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:41:06,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339957565] [2022-01-28 13:41:06,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-28 13:41:06,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:41:06,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:41:06,672 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) [2022-01-28 13:41:06,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-28 13:41:06,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 13:41:06,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:41:06,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 13:41:06,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:41:07,199 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:41:07,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:41:07,688 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:41:07,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339957565] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:41:07,688 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:41:07,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 22 [2022-01-28 13:41:07,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380485905] [2022-01-28 13:41:07,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:41:07,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-28 13:41:07,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:41:07,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-28 13:41:07,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2022-01-28 13:41:07,690 INFO L87 Difference]: Start difference. First operand 745 states and 1823 transitions. Second operand has 22 states, 22 states have (on average 10.409090909090908) internal successors, (229), 22 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:07,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:41:07,994 INFO L93 Difference]: Finished difference Result 1590 states and 3825 transitions. [2022-01-28 13:41:07,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-28 13:41:07,994 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 10.409090909090908) internal successors, (229), 22 states have internal predecessors, (229), 0 states have call successors, (0), 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 103 [2022-01-28 13:41:07,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:41:07,999 INFO L225 Difference]: With dead ends: 1590 [2022-01-28 13:41:07,999 INFO L226 Difference]: Without dead ends: 1072 [2022-01-28 13:41:07,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=325, Invalid=865, Unknown=0, NotChecked=0, Total=1190 [2022-01-28 13:41:08,000 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 956 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 13:41:08,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [956 Valid, 590 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 13:41:08,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2022-01-28 13:41:08,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 765. [2022-01-28 13:41:08,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 764 states have (on average 2.4489528795811517) internal successors, (1871), 764 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:08,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1871 transitions. [2022-01-28 13:41:08,018 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1871 transitions. Word has length 103 [2022-01-28 13:41:08,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:41:08,018 INFO L470 AbstractCegarLoop]: Abstraction has 765 states and 1871 transitions. [2022-01-28 13:41:08,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.409090909090908) internal successors, (229), 22 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:08,019 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1871 transitions. [2022-01-28 13:41:08,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-28 13:41:08,020 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:41:08,020 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:41:08,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-28 13:41:08,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-28 13:41:08,236 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:41:08,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:41:08,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1676131039, now seen corresponding path program 3 times [2022-01-28 13:41:08,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:41:08,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510172399] [2022-01-28 13:41:08,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:41:08,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:41:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:41:08,741 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:41:08,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:41:08,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510172399] [2022-01-28 13:41:08,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510172399] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:41:08,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118424258] [2022-01-28 13:41:08,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-28 13:41:08,742 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:41:08,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:41:08,743 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) [2022-01-28 13:41:08,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-28 13:41:08,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-28 13:41:08,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:41:08,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 13:41:08,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:41:09,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-28 13:41:09,073 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-28 13:41:09,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:41:09,124 INFO L354 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-28 13:41:09,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-01-28 13:41:09,263 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-28 13:41:09,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118424258] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:41:09,263 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:41:09,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 7, 7] total 22 [2022-01-28 13:41:09,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21334791] [2022-01-28 13:41:09,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:41:09,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-28 13:41:09,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:41:09,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-28 13:41:09,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2022-01-28 13:41:09,264 INFO L87 Difference]: Start difference. First operand 765 states and 1871 transitions. Second operand has 22 states, 22 states have (on average 7.636363636363637) internal successors, (168), 22 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:10,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:41:10,293 INFO L93 Difference]: Finished difference Result 2263 states and 5745 transitions. [2022-01-28 13:41:10,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-28 13:41:10,293 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.636363636363637) internal successors, (168), 22 states have internal predecessors, (168), 0 states have call successors, (0), 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 107 [2022-01-28 13:41:10,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:41:10,300 INFO L225 Difference]: With dead ends: 2263 [2022-01-28 13:41:10,300 INFO L226 Difference]: Without dead ends: 1862 [2022-01-28 13:41:10,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=394, Invalid=1768, Unknown=0, NotChecked=0, Total=2162 [2022-01-28 13:41:10,301 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 544 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 13:41:10,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 1317 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 13:41:10,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2022-01-28 13:41:10,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 801. [2022-01-28 13:41:10,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 800 states have (on average 2.4475) internal successors, (1958), 800 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:10,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1958 transitions. [2022-01-28 13:41:10,320 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1958 transitions. Word has length 107 [2022-01-28 13:41:10,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:41:10,320 INFO L470 AbstractCegarLoop]: Abstraction has 801 states and 1958 transitions. [2022-01-28 13:41:10,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.636363636363637) internal successors, (168), 22 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:10,321 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1958 transitions. [2022-01-28 13:41:10,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-28 13:41:10,322 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:41:10,322 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:41:10,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-28 13:41:10,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:41:10,539 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:41:10,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:41:10,539 INFO L85 PathProgramCache]: Analyzing trace with hash 570372965, now seen corresponding path program 4 times [2022-01-28 13:41:10,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:41:10,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130731482] [2022-01-28 13:41:10,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:41:10,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:41:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:41:11,109 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:41:11,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:41:11,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130731482] [2022-01-28 13:41:11,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130731482] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:41:11,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21518833] [2022-01-28 13:41:11,109 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-28 13:41:11,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:41:11,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:41:11,110 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) [2022-01-28 13:41:11,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-28 13:41:11,171 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-28 13:41:11,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:41:11,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-28 13:41:11,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:41:11,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-28 13:41:11,286 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-28 13:41:11,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-28 13:41:11,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-28 13:41:11,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-28 13:41:11,613 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-28 13:41:11,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:41:11,651 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_151 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_151) c_~queue~0.base) (+ (* c_~front~0 4) c_~queue~0.offset)) 5)) is different from false [2022-01-28 13:41:11,679 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:41:11,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 42 [2022-01-28 13:41:11,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-01-28 13:41:12,053 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 1 not checked. [2022-01-28 13:41:12,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21518833] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:41:12,054 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:41:12,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 14, 14] total 33 [2022-01-28 13:41:12,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876916036] [2022-01-28 13:41:12,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:41:12,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 13:41:12,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:41:12,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 13:41:12,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=907, Unknown=1, NotChecked=60, Total=1056 [2022-01-28 13:41:12,056 INFO L87 Difference]: Start difference. First operand 801 states and 1958 transitions. Second operand has 33 states, 33 states have (on average 6.212121212121212) internal successors, (205), 33 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:13,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:41:13,559 INFO L93 Difference]: Finished difference Result 1846 states and 4659 transitions. [2022-01-28 13:41:13,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-28 13:41:13,559 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 6.212121212121212) internal successors, (205), 33 states have internal predecessors, (205), 0 states have call successors, (0), 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 107 [2022-01-28 13:41:13,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:41:13,565 INFO L225 Difference]: With dead ends: 1846 [2022-01-28 13:41:13,565 INFO L226 Difference]: Without dead ends: 1535 [2022-01-28 13:41:13,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 204 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=584, Invalid=2841, Unknown=1, NotChecked=114, Total=3540 [2022-01-28 13:41:13,566 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 877 mSDsluCounter, 1680 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 165 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-28 13:41:13,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [877 Valid, 1662 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 712 Invalid, 0 Unknown, 165 Unchecked, 0.3s Time] [2022-01-28 13:41:13,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2022-01-28 13:41:13,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 763. [2022-01-28 13:41:13,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 762 states have (on average 2.4698162729658795) internal successors, (1882), 762 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:13,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1882 transitions. [2022-01-28 13:41:13,584 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1882 transitions. Word has length 107 [2022-01-28 13:41:13,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:41:13,584 INFO L470 AbstractCegarLoop]: Abstraction has 763 states and 1882 transitions. [2022-01-28 13:41:13,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 6.212121212121212) internal successors, (205), 33 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:13,584 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1882 transitions. [2022-01-28 13:41:13,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-28 13:41:13,586 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:41:13,586 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:41:13,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-28 13:41:13,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:41:13,802 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:41:13,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:41:13,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1977634385, now seen corresponding path program 5 times [2022-01-28 13:41:13,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:41:13,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267682181] [2022-01-28 13:41:13,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:41:13,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:41:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:41:14,311 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:41:14,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:41:14,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267682181] [2022-01-28 13:41:14,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267682181] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:41:14,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293649447] [2022-01-28 13:41:14,311 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-28 13:41:14,311 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:41:14,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:41:14,328 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) [2022-01-28 13:41:14,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-28 13:41:14,399 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-28 13:41:14,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:41:14,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 55 conjunts are in the unsatisfiable core [2022-01-28 13:41:14,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:41:14,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-28 13:41:14,720 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-28 13:41:14,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-28 13:41:14,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-28 13:41:15,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-28 13:41:15,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-28 13:41:15,796 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-28 13:41:15,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-28 13:41:15,826 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:41:15,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:41:17,211 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:41:17,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 46 [2022-01-28 13:41:17,226 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:41:17,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 186 treesize of output 177 [2022-01-28 13:41:17,237 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:41:17,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 90 [2022-01-28 13:41:17,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 94 [2022-01-28 13:41:18,898 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:41:18,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293649447] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:41:18,898 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:41:18,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26, 26] total 66 [2022-01-28 13:41:18,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638093877] [2022-01-28 13:41:18,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:41:18,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-01-28 13:41:18,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:41:18,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-01-28 13:41:18,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=4012, Unknown=9, NotChecked=0, Total=4290 [2022-01-28 13:41:18,900 INFO L87 Difference]: Start difference. First operand 763 states and 1882 transitions. Second operand has 66 states, 66 states have (on average 4.212121212121212) internal successors, (278), 66 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:23,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:41:23,144 INFO L93 Difference]: Finished difference Result 4848 states and 13042 transitions. [2022-01-28 13:41:23,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-28 13:41:23,147 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.212121212121212) internal successors, (278), 66 states have internal predecessors, (278), 0 states have call successors, (0), 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 113 [2022-01-28 13:41:23,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:41:23,164 INFO L225 Difference]: With dead ends: 4848 [2022-01-28 13:41:23,164 INFO L226 Difference]: Without dead ends: 4838 [2022-01-28 13:41:23,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 210 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 2557 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1912, Invalid=11651, Unknown=9, NotChecked=0, Total=13572 [2022-01-28 13:41:23,167 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 2224 mSDsluCounter, 5219 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2224 SdHoareTripleChecker+Valid, 5078 SdHoareTripleChecker+Invalid, 2532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1201 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-28 13:41:23,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2224 Valid, 5078 Invalid, 2532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1161 Invalid, 0 Unknown, 1201 Unchecked, 0.6s Time] [2022-01-28 13:41:23,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4838 states. [2022-01-28 13:41:23,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4838 to 1609. [2022-01-28 13:41:23,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1609 states, 1608 states have (on average 2.695273631840796) internal successors, (4334), 1608 states have internal predecessors, (4334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:23,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 4334 transitions. [2022-01-28 13:41:23,240 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 4334 transitions. Word has length 113 [2022-01-28 13:41:23,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:41:23,240 INFO L470 AbstractCegarLoop]: Abstraction has 1609 states and 4334 transitions. [2022-01-28 13:41:23,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.212121212121212) internal successors, (278), 66 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:23,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 4334 transitions. [2022-01-28 13:41:23,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-28 13:41:23,243 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:41:23,243 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:41:23,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-28 13:41:23,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:41:23,448 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:41:23,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:41:23,449 INFO L85 PathProgramCache]: Analyzing trace with hash -727309383, now seen corresponding path program 6 times [2022-01-28 13:41:23,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:41:23,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706381741] [2022-01-28 13:41:23,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:41:23,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:41:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:41:23,872 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:41:23,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:41:23,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706381741] [2022-01-28 13:41:23,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706381741] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:41:23,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653081701] [2022-01-28 13:41:23,873 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-28 13:41:23,873 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:41:23,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:41:23,874 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) [2022-01-28 13:41:23,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-28 13:41:23,942 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-28 13:41:23,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:41:23,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 53 conjunts are in the unsatisfiable core [2022-01-28 13:41:23,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:41:24,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-28 13:41:24,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-28 13:41:24,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-28 13:41:24,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-28 13:41:25,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-28 13:41:25,097 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:41:25,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:41:26,180 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:41:26,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 47 [2022-01-28 13:41:26,186 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:41:26,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 188 treesize of output 179 [2022-01-28 13:41:26,194 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:41:26,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 91 [2022-01-28 13:41:26,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 94 [2022-01-28 13:41:27,151 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:41:27,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653081701] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:41:27,151 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:41:27,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26, 26] total 66 [2022-01-28 13:41:27,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278911411] [2022-01-28 13:41:27,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:41:27,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-01-28 13:41:27,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:41:27,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-01-28 13:41:27,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=3966, Unknown=12, NotChecked=0, Total=4290 [2022-01-28 13:41:27,153 INFO L87 Difference]: Start difference. First operand 1609 states and 4334 transitions. Second operand has 66 states, 66 states have (on average 4.212121212121212) internal successors, (278), 66 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:32,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:41:32,880 INFO L93 Difference]: Finished difference Result 6172 states and 16544 transitions. [2022-01-28 13:41:32,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-28 13:41:32,880 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.212121212121212) internal successors, (278), 66 states have internal predecessors, (278), 0 states have call successors, (0), 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 113 [2022-01-28 13:41:32,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:41:32,898 INFO L225 Difference]: With dead ends: 6172 [2022-01-28 13:41:32,898 INFO L226 Difference]: Without dead ends: 4720 [2022-01-28 13:41:32,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 185 SyntacticMatches, 2 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3771 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=2026, Invalid=14468, Unknown=18, NotChecked=0, Total=16512 [2022-01-28 13:41:32,902 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 3800 mSDsluCounter, 4788 mSDsCounter, 0 mSdLazyCounter, 1583 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3800 SdHoareTripleChecker+Valid, 4382 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 1583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1122 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-28 13:41:32,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3800 Valid, 4382 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 1583 Invalid, 0 Unknown, 1122 Unchecked, 0.8s Time] [2022-01-28 13:41:32,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4720 states. [2022-01-28 13:41:32,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4720 to 2144. [2022-01-28 13:41:32,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2144 states, 2143 states have (on average 2.662622491833878) internal successors, (5706), 2143 states have internal predecessors, (5706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:32,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2144 states to 2144 states and 5706 transitions. [2022-01-28 13:41:32,963 INFO L78 Accepts]: Start accepts. Automaton has 2144 states and 5706 transitions. Word has length 113 [2022-01-28 13:41:32,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:41:32,964 INFO L470 AbstractCegarLoop]: Abstraction has 2144 states and 5706 transitions. [2022-01-28 13:41:32,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.212121212121212) internal successors, (278), 66 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:32,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2144 states and 5706 transitions. [2022-01-28 13:41:32,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-28 13:41:32,970 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:41:32,970 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:41:32,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-28 13:41:33,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:41:33,175 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:41:33,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:41:33,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1903615420, now seen corresponding path program 7 times [2022-01-28 13:41:33,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:41:33,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163221894] [2022-01-28 13:41:33,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:41:33,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:41:33,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:41:33,767 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:41:33,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:41:33,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163221894] [2022-01-28 13:41:33,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163221894] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:41:33,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166488120] [2022-01-28 13:41:33,768 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-28 13:41:33,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:41:33,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:41:33,769 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) [2022-01-28 13:41:33,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-28 13:41:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:41:33,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 39 conjunts are in the unsatisfiable core [2022-01-28 13:41:33,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:41:34,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-28 13:41:34,484 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:41:34,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:41:34,564 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-01-28 13:41:34,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2022-01-28 13:41:35,232 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:41:35,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166488120] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:41:35,232 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:41:35,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 19, 19] total 52 [2022-01-28 13:41:35,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111303259] [2022-01-28 13:41:35,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:41:35,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-28 13:41:35,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:41:35,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-28 13:41:35,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=504, Invalid=2148, Unknown=0, NotChecked=0, Total=2652 [2022-01-28 13:41:35,234 INFO L87 Difference]: Start difference. First operand 2144 states and 5706 transitions. Second operand has 52 states, 52 states have (on average 5.423076923076923) internal successors, (282), 52 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:39,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:41:39,181 INFO L93 Difference]: Finished difference Result 15833 states and 42583 transitions. [2022-01-28 13:41:39,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-01-28 13:41:39,189 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.423076923076923) internal successors, (282), 52 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2022-01-28 13:41:39,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:41:39,222 INFO L225 Difference]: With dead ends: 15833 [2022-01-28 13:41:39,222 INFO L226 Difference]: Without dead ends: 13471 [2022-01-28 13:41:39,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8343 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2786, Invalid=20470, Unknown=0, NotChecked=0, Total=23256 [2022-01-28 13:41:39,225 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 2529 mSDsluCounter, 5860 mSDsCounter, 0 mSdLazyCounter, 2442 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2529 SdHoareTripleChecker+Valid, 5511 SdHoareTripleChecker+Invalid, 2658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 2442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-28 13:41:39,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2529 Valid, 5511 Invalid, 2658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 2442 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-28 13:41:39,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13471 states. [2022-01-28 13:41:39,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13471 to 2862. [2022-01-28 13:41:39,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2862 states, 2861 states have (on average 2.774903879762321) internal successors, (7939), 2861 states have internal predecessors, (7939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:39,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2862 states to 2862 states and 7939 transitions. [2022-01-28 13:41:39,352 INFO L78 Accepts]: Start accepts. Automaton has 2862 states and 7939 transitions. Word has length 120 [2022-01-28 13:41:39,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:41:39,352 INFO L470 AbstractCegarLoop]: Abstraction has 2862 states and 7939 transitions. [2022-01-28 13:41:39,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.423076923076923) internal successors, (282), 52 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:39,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2862 states and 7939 transitions. [2022-01-28 13:41:39,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-28 13:41:39,357 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:41:39,358 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:41:39,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-01-28 13:41:39,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:41:39,571 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:41:39,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:41:39,572 INFO L85 PathProgramCache]: Analyzing trace with hash 2111818239, now seen corresponding path program 8 times [2022-01-28 13:41:39,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:41:39,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812375383] [2022-01-28 13:41:39,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:41:39,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:41:39,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:41:39,617 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 30 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-28 13:41:39,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:41:39,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812375383] [2022-01-28 13:41:39,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812375383] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:41:39,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638013569] [2022-01-28 13:41:39,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-28 13:41:39,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:41:39,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:41:39,619 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) [2022-01-28 13:41:39,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-28 13:41:39,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 13:41:39,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:41:39,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-28 13:41:39,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:41:39,885 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 35 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-28 13:41:39,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:41:40,240 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 23 proven. 17 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-28 13:41:40,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638013569] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:41:40,240 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:41:40,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 9] total 14 [2022-01-28 13:41:40,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655580210] [2022-01-28 13:41:40,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:41:40,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-28 13:41:40,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:41:40,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-28 13:41:40,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=103, Unknown=0, NotChecked=0, Total=182 [2022-01-28 13:41:40,249 INFO L87 Difference]: Start difference. First operand 2862 states and 7939 transitions. Second operand has 14 states, 14 states have (on average 13.928571428571429) internal successors, (195), 14 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:40,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:41:40,333 INFO L93 Difference]: Finished difference Result 7903 states and 22518 transitions. [2022-01-28 13:41:40,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 13:41:40,333 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 13.928571428571429) internal successors, (195), 14 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2022-01-28 13:41:40,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:41:40,362 INFO L225 Difference]: With dead ends: 7903 [2022-01-28 13:41:40,362 INFO L226 Difference]: Without dead ends: 7399 [2022-01-28 13:41:40,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=121, Unknown=0, NotChecked=0, Total=210 [2022-01-28 13:41:40,363 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 541 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 13:41:40,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [541 Valid, 502 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 13:41:40,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7399 states. [2022-01-28 13:41:40,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7399 to 6376. [2022-01-28 13:41:40,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6376 states, 6375 states have (on average 2.904470588235294) internal successors, (18516), 6375 states have internal predecessors, (18516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:40,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6376 states to 6376 states and 18516 transitions. [2022-01-28 13:41:40,506 INFO L78 Accepts]: Start accepts. Automaton has 6376 states and 18516 transitions. Word has length 122 [2022-01-28 13:41:40,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:41:40,506 INFO L470 AbstractCegarLoop]: Abstraction has 6376 states and 18516 transitions. [2022-01-28 13:41:40,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.928571428571429) internal successors, (195), 14 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:40,507 INFO L276 IsEmpty]: Start isEmpty. Operand 6376 states and 18516 transitions. [2022-01-28 13:41:40,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-28 13:41:40,520 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:41:40,520 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:41:40,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-28 13:41:40,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-28 13:41:40,731 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:41:40,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:41:40,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1254372837, now seen corresponding path program 9 times [2022-01-28 13:41:40,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:41:40,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131682137] [2022-01-28 13:41:40,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:41:40,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:41:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:41:40,814 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 17 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-28 13:41:40,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:41:40,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131682137] [2022-01-28 13:41:40,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131682137] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:41:40,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968950293] [2022-01-28 13:41:40,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-28 13:41:40,815 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:41:40,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:41:40,816 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) [2022-01-28 13:41:40,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-28 13:41:40,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-28 13:41:40,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:41:40,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 45 conjunts are in the unsatisfiable core [2022-01-28 13:41:40,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:41:41,511 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-28 13:41:41,513 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:41:41,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2022-01-28 13:41:41,561 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-28 13:41:41,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:41:41,822 INFO L354 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-28 13:41:41,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-01-28 13:41:42,119 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-28 13:41:42,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968950293] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:41:42,119 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:41:42,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 20, 15] total 37 [2022-01-28 13:41:42,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762180993] [2022-01-28 13:41:42,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:41:42,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-28 13:41:42,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:41:42,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-28 13:41:42,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1136, Unknown=0, NotChecked=0, Total=1332 [2022-01-28 13:41:42,121 INFO L87 Difference]: Start difference. First operand 6376 states and 18516 transitions. Second operand has 37 states, 37 states have (on average 6.378378378378378) internal successors, (236), 37 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:42,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:41:42,860 INFO L93 Difference]: Finished difference Result 7344 states and 18955 transitions. [2022-01-28 13:41:42,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-28 13:41:42,860 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 6.378378378378378) internal successors, (236), 37 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-28 13:41:42,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:41:42,874 INFO L225 Difference]: With dead ends: 7344 [2022-01-28 13:41:42,874 INFO L226 Difference]: Without dead ends: 7258 [2022-01-28 13:41:42,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1428 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=854, Invalid=4258, Unknown=0, NotChecked=0, Total=5112 [2022-01-28 13:41:42,875 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 1134 mSDsluCounter, 2138 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 206 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 13:41:42,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1134 Valid, 2183 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 418 Invalid, 0 Unknown, 206 Unchecked, 0.2s Time] [2022-01-28 13:41:42,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7258 states. [2022-01-28 13:41:42,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7258 to 4206. [2022-01-28 13:41:42,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4206 states, 4205 states have (on average 2.6684898929845424) internal successors, (11221), 4205 states have internal predecessors, (11221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:42,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4206 states to 4206 states and 11221 transitions. [2022-01-28 13:41:42,953 INFO L78 Accepts]: Start accepts. Automaton has 4206 states and 11221 transitions. Word has length 125 [2022-01-28 13:41:42,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:41:42,954 INFO L470 AbstractCegarLoop]: Abstraction has 4206 states and 11221 transitions. [2022-01-28 13:41:42,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 6.378378378378378) internal successors, (236), 37 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:42,954 INFO L276 IsEmpty]: Start isEmpty. Operand 4206 states and 11221 transitions. [2022-01-28 13:41:42,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-28 13:41:42,962 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:41:42,962 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:41:42,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-28 13:41:43,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-28 13:41:43,175 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:41:43,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:41:43,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1035861127, now seen corresponding path program 10 times [2022-01-28 13:41:43,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:41:43,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341182631] [2022-01-28 13:41:43,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:41:43,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:41:43,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:41:43,264 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 21 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-28 13:41:43,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:41:43,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341182631] [2022-01-28 13:41:43,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341182631] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:41:43,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239943935] [2022-01-28 13:41:43,265 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-28 13:41:43,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:41:43,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:41:43,279 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) [2022-01-28 13:41:43,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-28 13:41:43,348 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-28 13:41:43,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:41:43,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-28 13:41:43,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:41:43,660 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 31 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-28 13:41:43,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:41:43,989 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 22 proven. 18 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-28 13:41:43,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239943935] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:41:43,989 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:41:43,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 28 [2022-01-28 13:41:43,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688788201] [2022-01-28 13:41:43,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:41:43,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-28 13:41:43,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:41:43,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-28 13:41:43,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=611, Unknown=0, NotChecked=0, Total=756 [2022-01-28 13:41:43,991 INFO L87 Difference]: Start difference. First operand 4206 states and 11221 transitions. Second operand has 28 states, 28 states have (on average 7.5) internal successors, (210), 28 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:44,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:41:44,206 INFO L93 Difference]: Finished difference Result 3547 states and 9585 transitions. [2022-01-28 13:41:44,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-28 13:41:44,206 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.5) internal successors, (210), 28 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-28 13:41:44,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:41:44,210 INFO L225 Difference]: With dead ends: 3547 [2022-01-28 13:41:44,211 INFO L226 Difference]: Without dead ends: 3094 [2022-01-28 13:41:44,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=369, Invalid=1271, Unknown=0, NotChecked=0, Total=1640 [2022-01-28 13:41:44,211 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 410 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 13:41:44,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 1019 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 13:41:44,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3094 states. [2022-01-28 13:41:44,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3094 to 3094. [2022-01-28 13:41:44,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3094 states, 3093 states have (on average 2.76721629485936) internal successors, (8559), 3093 states have internal predecessors, (8559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:44,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3094 states to 3094 states and 8559 transitions. [2022-01-28 13:41:44,260 INFO L78 Accepts]: Start accepts. Automaton has 3094 states and 8559 transitions. Word has length 125 [2022-01-28 13:41:44,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:41:44,260 INFO L470 AbstractCegarLoop]: Abstraction has 3094 states and 8559 transitions. [2022-01-28 13:41:44,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.5) internal successors, (210), 28 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:44,261 INFO L276 IsEmpty]: Start isEmpty. Operand 3094 states and 8559 transitions. [2022-01-28 13:41:44,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-28 13:41:44,266 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:41:44,266 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:41:44,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-28 13:41:44,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-28 13:41:44,483 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:41:44,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:41:44,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1491316526, now seen corresponding path program 11 times [2022-01-28 13:41:44,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:41:44,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477793758] [2022-01-28 13:41:44,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:41:44,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:41:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:41:44,997 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:41:44,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:41:44,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477793758] [2022-01-28 13:41:44,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477793758] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:41:44,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025897979] [2022-01-28 13:41:44,997 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-28 13:41:44,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:41:44,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:41:44,998 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) [2022-01-28 13:41:44,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-28 13:41:45,076 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-28 13:41:45,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:41:45,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 50 conjunts are in the unsatisfiable core [2022-01-28 13:41:45,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:41:45,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-28 13:41:45,198 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-28 13:41:45,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-28 13:41:45,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-28 13:41:46,025 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-28 13:41:46,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-28 13:41:46,044 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-28 13:41:46,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:41:46,182 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_367 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_367) c_~queue~0.base) (+ (* c_~front~0 4) c_~queue~0.offset 8)) 5)) is different from false [2022-01-28 13:41:46,215 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:41:46,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-01-28 13:41:46,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-28 13:41:46,860 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 24 trivial. 3 not checked. [2022-01-28 13:41:46,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025897979] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:41:46,860 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:41:46,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 18] total 50 [2022-01-28 13:41:46,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235825003] [2022-01-28 13:41:46,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:41:46,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-28 13:41:46,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:41:46,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-28 13:41:46,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=2214, Unknown=1, NotChecked=94, Total=2450 [2022-01-28 13:41:46,862 INFO L87 Difference]: Start difference. First operand 3094 states and 8559 transitions. Second operand has 50 states, 50 states have (on average 5.28) internal successors, (264), 50 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:52,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:41:52,969 INFO L93 Difference]: Finished difference Result 32277 states and 90036 transitions. [2022-01-28 13:41:52,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-01-28 13:41:52,969 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 5.28) internal successors, (264), 50 states have internal predecessors, (264), 0 states have call successors, (0), 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 126 [2022-01-28 13:41:52,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:41:53,022 INFO L225 Difference]: With dead ends: 32277 [2022-01-28 13:41:53,022 INFO L226 Difference]: Without dead ends: 26923 [2022-01-28 13:41:53,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 235 SyntacticMatches, 11 SemanticMatches, 168 ConstructedPredicates, 1 IntricatePredicates, 3 DeprecatedPredicates, 8629 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=2746, Invalid=25649, Unknown=1, NotChecked=334, Total=28730 [2022-01-28 13:41:53,025 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 1908 mSDsluCounter, 9410 mSDsCounter, 0 mSdLazyCounter, 2459 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1908 SdHoareTripleChecker+Valid, 8864 SdHoareTripleChecker+Invalid, 3736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 2459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1164 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-28 13:41:53,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1908 Valid, 8864 Invalid, 3736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 2459 Invalid, 0 Unknown, 1164 Unchecked, 1.0s Time] [2022-01-28 13:41:53,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26923 states. [2022-01-28 13:41:53,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26923 to 6354. [2022-01-28 13:41:53,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6354 states, 6353 states have (on average 2.8931213599874077) internal successors, (18380), 6353 states have internal predecessors, (18380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:53,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6354 states to 6354 states and 18380 transitions. [2022-01-28 13:41:53,290 INFO L78 Accepts]: Start accepts. Automaton has 6354 states and 18380 transitions. Word has length 126 [2022-01-28 13:41:53,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:41:53,290 INFO L470 AbstractCegarLoop]: Abstraction has 6354 states and 18380 transitions. [2022-01-28 13:41:53,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 5.28) internal successors, (264), 50 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:53,290 INFO L276 IsEmpty]: Start isEmpty. Operand 6354 states and 18380 transitions. [2022-01-28 13:41:53,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-28 13:41:53,306 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:41:53,306 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:41:53,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-28 13:41:53,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-28 13:41:53,523 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:41:53,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:41:53,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1563471803, now seen corresponding path program 12 times [2022-01-28 13:41:53,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:41:53,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845171553] [2022-01-28 13:41:53,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:41:53,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:41:53,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:41:54,268 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:41:54,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:41:54,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845171553] [2022-01-28 13:41:54,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845171553] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:41:54,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911056946] [2022-01-28 13:41:54,269 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-28 13:41:54,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:41:54,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:41:54,270 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) [2022-01-28 13:41:54,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-28 13:41:54,350 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-28 13:41:54,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:41:54,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-28 13:41:54,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:41:54,615 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-28 13:41:54,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-28 13:41:54,633 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-01-28 13:41:54,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:41:54,773 INFO L354 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-28 13:41:54,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-01-28 13:41:55,075 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-28 13:41:55,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911056946] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:41:55,075 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:41:55,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 8, 9] total 33 [2022-01-28 13:41:55,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125596712] [2022-01-28 13:41:55,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:41:55,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 13:41:55,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:41:55,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 13:41:55,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 13:41:55,076 INFO L87 Difference]: Start difference. First operand 6354 states and 18380 transitions. Second operand has 33 states, 33 states have (on average 7.909090909090909) internal successors, (261), 33 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:56,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:41:56,710 INFO L93 Difference]: Finished difference Result 7993 states and 22468 transitions. [2022-01-28 13:41:56,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-28 13:41:56,710 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 7.909090909090909) internal successors, (261), 33 states have internal predecessors, (261), 0 states have call successors, (0), 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 127 [2022-01-28 13:41:56,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:41:56,723 INFO L225 Difference]: With dead ends: 7993 [2022-01-28 13:41:56,723 INFO L226 Difference]: Without dead ends: 7543 [2022-01-28 13:41:56,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1168 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1097, Invalid=4453, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 13:41:56,724 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 1051 mSDsluCounter, 2268 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 2209 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 206 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-28 13:41:56,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1051 Valid, 2209 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 530 Invalid, 0 Unknown, 206 Unchecked, 0.3s Time] [2022-01-28 13:41:56,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7543 states. [2022-01-28 13:41:56,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7543 to 6762. [2022-01-28 13:41:56,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6762 states, 6761 states have (on average 2.8803431445052508) internal successors, (19474), 6761 states have internal predecessors, (19474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:56,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6762 states to 6762 states and 19474 transitions. [2022-01-28 13:41:56,881 INFO L78 Accepts]: Start accepts. Automaton has 6762 states and 19474 transitions. Word has length 127 [2022-01-28 13:41:56,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:41:56,881 INFO L470 AbstractCegarLoop]: Abstraction has 6762 states and 19474 transitions. [2022-01-28 13:41:56,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 7.909090909090909) internal successors, (261), 33 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:56,882 INFO L276 IsEmpty]: Start isEmpty. Operand 6762 states and 19474 transitions. [2022-01-28 13:41:56,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-28 13:41:56,893 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:41:56,893 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:41:56,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-28 13:41:57,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-28 13:41:57,104 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:41:57,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:41:57,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1003422122, now seen corresponding path program 13 times [2022-01-28 13:41:57,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:41:57,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740481528] [2022-01-28 13:41:57,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:41:57,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:41:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:41:57,219 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 21 proven. 33 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-28 13:41:57,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:41:57,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740481528] [2022-01-28 13:41:57,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740481528] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:41:57,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335181606] [2022-01-28 13:41:57,220 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-28 13:41:57,220 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:41:57,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:41:57,221 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) [2022-01-28 13:41:57,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-28 13:41:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:41:57,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-28 13:41:57,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:41:57,652 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 30 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-28 13:41:57,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:41:58,031 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 15 proven. 39 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-28 13:41:58,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335181606] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:41:58,032 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:41:58,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-01-28 13:41:58,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630185016] [2022-01-28 13:41:58,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:41:58,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-28 13:41:58,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:41:58,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-28 13:41:58,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1097, Unknown=0, NotChecked=0, Total=1332 [2022-01-28 13:41:58,033 INFO L87 Difference]: Start difference. First operand 6762 states and 19474 transitions. Second operand has 37 states, 37 states have (on average 6.297297297297297) internal successors, (233), 37 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:58,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:41:58,338 INFO L93 Difference]: Finished difference Result 3963 states and 10441 transitions. [2022-01-28 13:41:58,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-28 13:41:58,339 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 6.297297297297297) internal successors, (233), 37 states have internal predecessors, (233), 0 states have call successors, (0), 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 129 [2022-01-28 13:41:58,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:41:58,342 INFO L225 Difference]: With dead ends: 3963 [2022-01-28 13:41:58,342 INFO L226 Difference]: Without dead ends: 3078 [2022-01-28 13:41:58,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=593, Invalid=2269, Unknown=0, NotChecked=0, Total=2862 [2022-01-28 13:41:58,343 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 531 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 13:41:58,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 1447 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 13:41:58,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3078 states. [2022-01-28 13:41:58,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3078 to 3078. [2022-01-28 13:41:58,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3078 states, 3077 states have (on average 2.7136821579460513) internal successors, (8350), 3077 states have internal predecessors, (8350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:58,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3078 states to 3078 states and 8350 transitions. [2022-01-28 13:41:58,379 INFO L78 Accepts]: Start accepts. Automaton has 3078 states and 8350 transitions. Word has length 129 [2022-01-28 13:41:58,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:41:58,379 INFO L470 AbstractCegarLoop]: Abstraction has 3078 states and 8350 transitions. [2022-01-28 13:41:58,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 6.297297297297297) internal successors, (233), 37 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:41:58,380 INFO L276 IsEmpty]: Start isEmpty. Operand 3078 states and 8350 transitions. [2022-01-28 13:41:58,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-28 13:41:58,385 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:41:58,385 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:41:58,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-01-28 13:41:58,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-28 13:41:58,600 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:41:58,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:41:58,600 INFO L85 PathProgramCache]: Analyzing trace with hash -959341019, now seen corresponding path program 14 times [2022-01-28 13:41:58,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:41:58,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465726576] [2022-01-28 13:41:58,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:41:58,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:41:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:41:59,199 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 1 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:41:59,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:41:59,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465726576] [2022-01-28 13:41:59,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465726576] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:41:59,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043229869] [2022-01-28 13:41:59,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-28 13:41:59,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:41:59,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:41:59,201 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) [2022-01-28 13:41:59,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-28 13:41:59,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 13:41:59,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:41:59,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 47 conjunts are in the unsatisfiable core [2022-01-28 13:41:59,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:42:00,335 INFO L354 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-01-28 13:42:00,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2022-01-28 13:42:00,354 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 1 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:42:00,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:42:00,465 INFO L354 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-28 13:42:00,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-01-28 13:42:01,382 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 2 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:42:01,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043229869] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:42:01,383 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:42:01,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 22, 22] total 58 [2022-01-28 13:42:01,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527545453] [2022-01-28 13:42:01,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:42:01,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-01-28 13:42:01,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:42:01,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-01-28 13:42:01,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=566, Invalid=2740, Unknown=0, NotChecked=0, Total=3306 [2022-01-28 13:42:01,384 INFO L87 Difference]: Start difference. First operand 3078 states and 8350 transitions. Second operand has 58 states, 58 states have (on average 5.068965517241379) internal successors, (294), 58 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:42:04,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:42:04,021 INFO L93 Difference]: Finished difference Result 14041 states and 38162 transitions. [2022-01-28 13:42:04,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-28 13:42:04,021 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 5.068965517241379) internal successors, (294), 58 states have internal predecessors, (294), 0 states have call successors, (0), 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 130 [2022-01-28 13:42:04,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:42:04,046 INFO L225 Difference]: With dead ends: 14041 [2022-01-28 13:42:04,046 INFO L226 Difference]: Without dead ends: 12550 [2022-01-28 13:42:04,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 229 SyntacticMatches, 3 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3834 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2101, Invalid=11705, Unknown=0, NotChecked=0, Total=13806 [2022-01-28 13:42:04,048 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 1948 mSDsluCounter, 4952 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1948 SdHoareTripleChecker+Valid, 4866 SdHoareTripleChecker+Invalid, 2063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 198 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-28 13:42:04,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1948 Valid, 4866 Invalid, 2063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1706 Invalid, 0 Unknown, 198 Unchecked, 0.7s Time] [2022-01-28 13:42:04,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12550 states. [2022-01-28 13:42:04,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12550 to 3573. [2022-01-28 13:42:04,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3573 states, 3572 states have (on average 2.7586786114221726) internal successors, (9854), 3572 states have internal predecessors, (9854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:42:04,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3573 states to 3573 states and 9854 transitions. [2022-01-28 13:42:04,153 INFO L78 Accepts]: Start accepts. Automaton has 3573 states and 9854 transitions. Word has length 130 [2022-01-28 13:42:04,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:42:04,153 INFO L470 AbstractCegarLoop]: Abstraction has 3573 states and 9854 transitions. [2022-01-28 13:42:04,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 5.068965517241379) internal successors, (294), 58 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:42:04,153 INFO L276 IsEmpty]: Start isEmpty. Operand 3573 states and 9854 transitions. [2022-01-28 13:42:04,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-28 13:42:04,159 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:42:04,159 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:42:04,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-28 13:42:04,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:42:04,376 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:42:04,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:42:04,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1111453547, now seen corresponding path program 15 times [2022-01-28 13:42:04,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:42:04,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957723379] [2022-01-28 13:42:04,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:42:04,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:42:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:42:04,942 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 1 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:42:04,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:42:04,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957723379] [2022-01-28 13:42:04,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957723379] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:42:04,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385290019] [2022-01-28 13:42:04,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-28 13:42:04,943 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:42:04,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:42:04,944 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) [2022-01-28 13:42:04,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-28 13:42:05,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-28 13:42:05,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:42:05,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-28 13:42:05,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:42:05,493 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-28 13:42:05,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-28 13:42:05,511 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-01-28 13:42:05,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:42:05,575 INFO L354 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-28 13:42:05,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-01-28 13:42:05,822 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-01-28 13:42:05,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385290019] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:42:05,822 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:42:05,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 8, 8] total 30 [2022-01-28 13:42:05,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686366983] [2022-01-28 13:42:05,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:42:05,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-28 13:42:05,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:42:05,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-28 13:42:05,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=780, Unknown=0, NotChecked=0, Total=870 [2022-01-28 13:42:05,823 INFO L87 Difference]: Start difference. First operand 3573 states and 9854 transitions. Second operand has 30 states, 30 states have (on average 7.1) internal successors, (213), 30 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:42:07,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:42:07,177 INFO L93 Difference]: Finished difference Result 6506 states and 17425 transitions. [2022-01-28 13:42:07,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-28 13:42:07,177 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 7.1) internal successors, (213), 30 states have internal predecessors, (213), 0 states have call successors, (0), 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 130 [2022-01-28 13:42:07,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:42:07,187 INFO L225 Difference]: With dead ends: 6506 [2022-01-28 13:42:07,187 INFO L226 Difference]: Without dead ends: 6133 [2022-01-28 13:42:07,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 256 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1045 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=606, Invalid=3950, Unknown=0, NotChecked=0, Total=4556 [2022-01-28 13:42:07,188 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 613 mSDsluCounter, 2582 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 2462 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-28 13:42:07,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [613 Valid, 2462 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 842 Invalid, 0 Unknown, 137 Unchecked, 0.3s Time] [2022-01-28 13:42:07,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6133 states. [2022-01-28 13:42:07,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6133 to 3436. [2022-01-28 13:42:07,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3436 states, 3435 states have (on average 2.7505094614264918) internal successors, (9448), 3435 states have internal predecessors, (9448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:42:07,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3436 states to 3436 states and 9448 transitions. [2022-01-28 13:42:07,247 INFO L78 Accepts]: Start accepts. Automaton has 3436 states and 9448 transitions. Word has length 130 [2022-01-28 13:42:07,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:42:07,247 INFO L470 AbstractCegarLoop]: Abstraction has 3436 states and 9448 transitions. [2022-01-28 13:42:07,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.1) internal successors, (213), 30 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:42:07,247 INFO L276 IsEmpty]: Start isEmpty. Operand 3436 states and 9448 transitions. [2022-01-28 13:42:07,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-28 13:42:07,253 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:42:07,253 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:42:07,271 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-01-28 13:42:07,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:42:07,467 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:42:07,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:42:07,468 INFO L85 PathProgramCache]: Analyzing trace with hash -943992935, now seen corresponding path program 16 times [2022-01-28 13:42:07,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:42:07,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474245190] [2022-01-28 13:42:07,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:42:07,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:42:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:42:08,241 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:42:08,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:42:08,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474245190] [2022-01-28 13:42:08,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474245190] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:42:08,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865315200] [2022-01-28 13:42:08,242 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-28 13:42:08,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:42:08,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:42:08,243 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) [2022-01-28 13:42:08,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-28 13:42:08,320 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-28 13:42:08,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:42:08,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 47 conjunts are in the unsatisfiable core [2022-01-28 13:42:08,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:42:09,335 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-28 13:42:09,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-28 13:42:09,353 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:42:09,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:42:09,473 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-01-28 13:42:09,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2022-01-28 13:42:10,474 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:42:10,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865315200] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:42:10,475 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:42:10,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 23, 23] total 61 [2022-01-28 13:42:10,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123934209] [2022-01-28 13:42:10,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:42:10,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-01-28 13:42:10,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:42:10,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-01-28 13:42:10,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=3097, Unknown=0, NotChecked=0, Total=3660 [2022-01-28 13:42:10,477 INFO L87 Difference]: Start difference. First operand 3436 states and 9448 transitions. Second operand has 61 states, 61 states have (on average 4.967213114754099) internal successors, (303), 61 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:42:13,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:42:13,787 INFO L93 Difference]: Finished difference Result 21761 states and 60015 transitions. [2022-01-28 13:42:13,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-28 13:42:13,787 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.967213114754099) internal successors, (303), 61 states have internal predecessors, (303), 0 states have call successors, (0), 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 133 [2022-01-28 13:42:13,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:42:13,824 INFO L225 Difference]: With dead ends: 21761 [2022-01-28 13:42:13,824 INFO L226 Difference]: Without dead ends: 21730 [2022-01-28 13:42:13,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 230 SyntacticMatches, 4 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4597 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2137, Invalid=14119, Unknown=0, NotChecked=0, Total=16256 [2022-01-28 13:42:13,826 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 2667 mSDsluCounter, 8429 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2667 SdHoareTripleChecker+Valid, 8137 SdHoareTripleChecker+Invalid, 2996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 852 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-28 13:42:13,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2667 Valid, 8137 Invalid, 2996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 1931 Invalid, 0 Unknown, 852 Unchecked, 0.8s Time] [2022-01-28 13:42:13,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21730 states. [2022-01-28 13:42:13,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21730 to 7442. [2022-01-28 13:42:14,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7442 states, 7441 states have (on average 2.8934283026474934) internal successors, (21530), 7441 states have internal predecessors, (21530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:42:14,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7442 states to 7442 states and 21530 transitions. [2022-01-28 13:42:14,015 INFO L78 Accepts]: Start accepts. Automaton has 7442 states and 21530 transitions. Word has length 133 [2022-01-28 13:42:14,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:42:14,016 INFO L470 AbstractCegarLoop]: Abstraction has 7442 states and 21530 transitions. [2022-01-28 13:42:14,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.967213114754099) internal successors, (303), 61 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:42:14,016 INFO L276 IsEmpty]: Start isEmpty. Operand 7442 states and 21530 transitions. [2022-01-28 13:42:14,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-28 13:42:14,028 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:42:14,028 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:42:14,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-28 13:42:14,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:42:14,235 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:42:14,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:42:14,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1531750735, now seen corresponding path program 17 times [2022-01-28 13:42:14,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:42:14,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147423855] [2022-01-28 13:42:14,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:42:14,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:42:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:42:14,904 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:42:14,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:42:14,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147423855] [2022-01-28 13:42:14,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147423855] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:42:14,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89307184] [2022-01-28 13:42:14,905 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-28 13:42:14,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:42:14,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:42:14,906 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) [2022-01-28 13:42:14,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-28 13:42:15,015 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-28 13:42:15,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:42:15,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-28 13:42:15,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:42:15,592 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-28 13:42:15,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-28 13:42:15,610 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-28 13:42:15,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:42:15,724 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-01-28 13:42:15,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2022-01-28 13:42:15,982 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-28 13:42:15,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89307184] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:42:15,983 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:42:15,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 14, 11] total 39 [2022-01-28 13:42:15,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388652151] [2022-01-28 13:42:15,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:42:15,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-28 13:42:15,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:42:15,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-28 13:42:15,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1356, Unknown=0, NotChecked=0, Total=1482 [2022-01-28 13:42:15,984 INFO L87 Difference]: Start difference. First operand 7442 states and 21530 transitions. Second operand has 39 states, 39 states have (on average 5.897435897435898) internal successors, (230), 39 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:42:17,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:42:17,708 INFO L93 Difference]: Finished difference Result 21682 states and 62324 transitions. [2022-01-28 13:42:17,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-28 13:42:17,709 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.897435897435898) internal successors, (230), 39 states have internal predecessors, (230), 0 states have call successors, (0), 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 133 [2022-01-28 13:42:17,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:42:17,748 INFO L225 Difference]: With dead ends: 21682 [2022-01-28 13:42:17,748 INFO L226 Difference]: Without dead ends: 21114 [2022-01-28 13:42:17,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 253 SyntacticMatches, 5 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 1181 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=551, Invalid=4419, Unknown=0, NotChecked=0, Total=4970 [2022-01-28 13:42:17,750 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 822 mSDsluCounter, 6202 mSDsCounter, 0 mSdLazyCounter, 1658 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 5941 SdHoareTripleChecker+Invalid, 1901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 212 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-28 13:42:17,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [822 Valid, 5941 Invalid, 1901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1658 Invalid, 0 Unknown, 212 Unchecked, 0.6s Time] [2022-01-28 13:42:17,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21114 states. [2022-01-28 13:42:17,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21114 to 9894. [2022-01-28 13:42:18,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9894 states, 9893 states have (on average 2.951480845041949) internal successors, (29199), 9893 states have internal predecessors, (29199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:42:18,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9894 states to 9894 states and 29199 transitions. [2022-01-28 13:42:18,022 INFO L78 Accepts]: Start accepts. Automaton has 9894 states and 29199 transitions. Word has length 133 [2022-01-28 13:42:18,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:42:18,022 INFO L470 AbstractCegarLoop]: Abstraction has 9894 states and 29199 transitions. [2022-01-28 13:42:18,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.897435897435898) internal successors, (230), 39 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:42:18,022 INFO L276 IsEmpty]: Start isEmpty. Operand 9894 states and 29199 transitions. [2022-01-28 13:42:18,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-28 13:42:18,038 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:42:18,038 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:42:18,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-28 13:42:18,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:42:18,239 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:42:18,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:42:18,240 INFO L85 PathProgramCache]: Analyzing trace with hash -640763707, now seen corresponding path program 18 times [2022-01-28 13:42:18,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:42:18,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125768937] [2022-01-28 13:42:18,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:42:18,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:42:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:42:18,743 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 1 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:42:18,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:42:18,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125768937] [2022-01-28 13:42:18,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125768937] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:42:18,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568387860] [2022-01-28 13:42:18,744 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-28 13:42:18,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:42:18,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:42:18,745 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) [2022-01-28 13:42:18,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-28 13:42:18,946 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-28 13:42:18,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:42:18,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-28 13:42:18,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:42:19,246 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-28 13:42:19,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-28 13:42:19,278 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-01-28 13:42:19,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:42:19,470 INFO L354 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-28 13:42:19,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-01-28 13:42:19,776 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-28 13:42:19,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568387860] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:42:19,776 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:42:19,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 10, 11] total 39 [2022-01-28 13:42:19,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935500052] [2022-01-28 13:42:19,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:42:19,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-28 13:42:19,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:42:19,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-28 13:42:19,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=1173, Unknown=0, NotChecked=0, Total=1482 [2022-01-28 13:42:19,779 INFO L87 Difference]: Start difference. First operand 9894 states and 29199 transitions. Second operand has 39 states, 39 states have (on average 7.153846153846154) internal successors, (279), 39 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:42:21,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:42:21,010 INFO L93 Difference]: Finished difference Result 13285 states and 38513 transitions. [2022-01-28 13:42:21,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-28 13:42:21,010 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 7.153846153846154) internal successors, (279), 39 states have internal predecessors, (279), 0 states have call successors, (0), 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 133 [2022-01-28 13:42:21,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:42:21,032 INFO L225 Difference]: With dead ends: 13285 [2022-01-28 13:42:21,033 INFO L226 Difference]: Without dead ends: 13262 [2022-01-28 13:42:21,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 260 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1773 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1211, Invalid=4951, Unknown=0, NotChecked=0, Total=6162 [2022-01-28 13:42:21,034 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 902 mSDsluCounter, 2150 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 2149 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 389 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-28 13:42:21,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [902 Valid, 2149 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 649 Invalid, 0 Unknown, 389 Unchecked, 0.3s Time] [2022-01-28 13:42:21,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13262 states. [2022-01-28 13:42:21,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13262 to 10905. [2022-01-28 13:42:21,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10905 states, 10904 states have (on average 2.94506603081438) internal successors, (32113), 10904 states have internal predecessors, (32113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:42:21,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10905 states to 10905 states and 32113 transitions. [2022-01-28 13:42:21,318 INFO L78 Accepts]: Start accepts. Automaton has 10905 states and 32113 transitions. Word has length 133 [2022-01-28 13:42:21,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:42:21,318 INFO L470 AbstractCegarLoop]: Abstraction has 10905 states and 32113 transitions. [2022-01-28 13:42:21,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 7.153846153846154) internal successors, (279), 39 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:42:21,319 INFO L276 IsEmpty]: Start isEmpty. Operand 10905 states and 32113 transitions. [2022-01-28 13:42:21,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-28 13:42:21,333 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:42:21,333 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:42:21,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-01-28 13:42:21,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:42:21,534 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:42:21,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:42:21,534 INFO L85 PathProgramCache]: Analyzing trace with hash -2061433595, now seen corresponding path program 19 times [2022-01-28 13:42:21,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:42:21,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564014687] [2022-01-28 13:42:21,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:42:21,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:42:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:42:22,527 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:42:22,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:42:22,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564014687] [2022-01-28 13:42:22,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564014687] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:42:22,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127740523] [2022-01-28 13:42:22,527 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-28 13:42:22,527 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:42:22,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:42:22,528 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) [2022-01-28 13:42:22,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-28 13:42:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:42:22,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-28 13:42:22,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:42:23,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-28 13:42:23,521 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:42:23,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:42:23,618 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-01-28 13:42:23,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2022-01-28 13:42:24,635 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:42:24,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127740523] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:42:24,635 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:42:24,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 23, 23] total 64 [2022-01-28 13:42:24,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696754123] [2022-01-28 13:42:24,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:42:24,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-28 13:42:24,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:42:24,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-28 13:42:24,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=633, Invalid=3399, Unknown=0, NotChecked=0, Total=4032 [2022-01-28 13:42:24,637 INFO L87 Difference]: Start difference. First operand 10905 states and 32113 transitions. Second operand has 64 states, 64 states have (on average 4.984375) internal successors, (319), 64 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:42:34,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:42:34,824 INFO L93 Difference]: Finished difference Result 40557 states and 111884 transitions. [2022-01-28 13:42:34,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2022-01-28 13:42:34,824 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.984375) internal successors, (319), 64 states have internal predecessors, (319), 0 states have call successors, (0), 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 133 [2022-01-28 13:42:34,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:42:34,885 INFO L225 Difference]: With dead ends: 40557 [2022-01-28 13:42:34,885 INFO L226 Difference]: Without dead ends: 29977 [2022-01-28 13:42:34,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20887 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=7542, Invalid=51750, Unknown=0, NotChecked=0, Total=59292 [2022-01-28 13:42:34,889 INFO L933 BasicCegarLoop]: 432 mSDtfsCounter, 3201 mSDsluCounter, 12952 mSDsCounter, 0 mSdLazyCounter, 5038 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3201 SdHoareTripleChecker+Valid, 12300 SdHoareTripleChecker+Invalid, 5262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 5038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-28 13:42:34,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3201 Valid, 12300 Invalid, 5262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 5038 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-28 13:42:34,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29977 states. [2022-01-28 13:42:35,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29977 to 8003. [2022-01-28 13:42:35,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8003 states, 8002 states have (on average 2.9325168707823046) internal successors, (23466), 8002 states have internal predecessors, (23466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:42:35,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8003 states to 8003 states and 23466 transitions. [2022-01-28 13:42:35,169 INFO L78 Accepts]: Start accepts. Automaton has 8003 states and 23466 transitions. Word has length 133 [2022-01-28 13:42:35,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:42:35,169 INFO L470 AbstractCegarLoop]: Abstraction has 8003 states and 23466 transitions. [2022-01-28 13:42:35,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.984375) internal successors, (319), 64 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:42:35,169 INFO L276 IsEmpty]: Start isEmpty. Operand 8003 states and 23466 transitions. [2022-01-28 13:42:35,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-28 13:42:35,180 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:42:35,180 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:42:35,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-01-28 13:42:35,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:42:35,381 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:42:35,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:42:35,382 INFO L85 PathProgramCache]: Analyzing trace with hash 2069477215, now seen corresponding path program 20 times [2022-01-28 13:42:35,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:42:35,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879532465] [2022-01-28 13:42:35,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:42:35,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:42:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:42:36,286 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 6 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:42:36,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:42:36,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879532465] [2022-01-28 13:42:36,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879532465] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:42:36,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907685687] [2022-01-28 13:42:36,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-28 13:42:36,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:42:36,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:42:36,287 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) [2022-01-28 13:42:36,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-28 13:42:36,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 13:42:36,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:42:36,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 60 conjunts are in the unsatisfiable core [2022-01-28 13:42:36,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:42:36,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-28 13:42:36,612 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-28 13:42:36,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-28 13:42:37,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-28 13:42:37,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-28 13:42:37,845 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:42:37,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:42:37,982 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_689 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_689) c_~queue~0.base) (+ (* c_~front~0 4) c_~queue~0.offset 8)) 5)) is different from false [2022-01-28 13:42:38,071 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:42:38,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-01-28 13:42:38,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-28 13:42:39,817 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-01-28 13:42:39,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907685687] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:42:39,817 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:42:39,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 84 [2022-01-28 13:42:39,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64941256] [2022-01-28 13:42:39,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:42:39,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-01-28 13:42:39,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:42:39,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-01-28 13:42:39,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=564, Invalid=6245, Unknown=1, NotChecked=162, Total=6972 [2022-01-28 13:42:39,819 INFO L87 Difference]: Start difference. First operand 8003 states and 23466 transitions. Second operand has 84 states, 84 states have (on average 4.119047619047619) internal successors, (346), 84 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:42:56,376 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (* 4 c_~back~0)) (.cse2 (* 4 c_~front~0)) (.cse13 (+ c_~front~0 1))) (let ((.cse5 (<= c_~n~0 |c_ULTIMATE.start_create_fresh_int_array_~size#1|)) (.cse7 (not (= |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |c_ULTIMATE.start_main_~#t2~0#1.base|))) (.cse3 (not (= c_~queue~0.base |c_ULTIMATE.start_main_~#t2~0#1.base|))) (.cse8 (<= .cse13 0)) (.cse4 (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_main_~#t2~0#1.base|)) (.cse6 (<= c_~front~0 c_~back~0)) (.cse14 (forall ((v_ArrVal_689 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_689) c_~queue~0.base) (+ (* c_~front~0 4) c_~queue~0.offset 8)) 5))) (.cse10 (< c_~back~0 0)) (.cse12 (= .cse1 .cse2)) (.cse11 (<= c_~n~0 (+ c_~back~0 3)))) (and (let ((.cse0 (+ c_~back~0 1))) (or (<= c_~n~0 .cse0) (and (= .cse1 (+ .cse2 8)) .cse3) (< .cse0 0))) .cse4 (or (and .cse5 .cse6 .cse7 (= |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0)) .cse8) (= (select |c_#valid| |c_ULTIMATE.start_main_~#t2~0#1.base|) 1) (let ((.cse9 (+ c_~back~0 2))) (or (and (= .cse1 (+ .cse2 4)) .cse3) (< .cse9 0) (<= c_~n~0 .cse9))) (or .cse10 .cse11 (and .cse12 (not (= |c_ULTIMATE.start_create_fresh_int_array_#res#1.base| |c_ULTIMATE.start_main_~#t2~0#1.base|)))) (or (and .cse4 .cse5 .cse6) .cse8) (or (and .cse12 (not (= |c_ULTIMATE.start_create_fresh_int_array_#t~malloc16#1.base| |c_ULTIMATE.start_main_~#t2~0#1.base|))) .cse10 .cse11 (< 4 |c_ULTIMATE.start_create_fresh_int_array_~size#1|)) (or (< 0 .cse13) (<= c_~back~0 c_~front~0)) .cse14 (or .cse10 .cse11 (and .cse12 .cse7)) (= 5 c_~x~0) (or (and .cse12 .cse3) .cse10 .cse11) (or .cse8 (and (<= c_~n~0 |c_ULTIMATE.start_create_fresh_int_array_#in~size#1|) .cse4 .cse6)) (or .cse10 .cse14 (<= c_~n~0 c_~back~0)) (or .cse10 (and .cse12 (not (= |c_ULTIMATE.start_main_#t~ret9#1.base| |c_ULTIMATE.start_main_~#t2~0#1.base|))) .cse11)))) is different from false [2022-01-28 13:42:57,950 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (* 4 c_~back~0)) (.cse2 (* 4 c_~front~0)) (.cse3 (not (= c_~queue~0.base |c_ULTIMATE.start_main_~#t2~0#1.base|))) (.cse5 (forall ((v_ArrVal_689 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_689) c_~queue~0.base) (+ (* c_~front~0 4) c_~queue~0.offset 8)) 5)))) (and (let ((.cse0 (+ c_~back~0 1))) (or (<= c_~n~0 .cse0) (and (= .cse1 (+ .cse2 8)) .cse3) (< .cse0 0))) (let ((.cse4 (+ c_~back~0 2))) (or (and (= .cse1 (+ .cse2 4)) .cse3) (< .cse4 0) (<= c_~n~0 .cse4))) .cse5 (or (< c_~back~0 0) .cse5 (<= c_~n~0 c_~back~0)))) is different from false [2022-01-28 13:43:22,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:43:22,031 INFO L93 Difference]: Finished difference Result 58947 states and 163877 transitions. [2022-01-28 13:43:22,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 249 states. [2022-01-28 13:43:22,031 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 4.119047619047619) internal successors, (346), 84 states have internal predecessors, (346), 0 states have call successors, (0), 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 136 [2022-01-28 13:43:22,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:43:22,175 INFO L225 Difference]: With dead ends: 58947 [2022-01-28 13:43:22,175 INFO L226 Difference]: Without dead ends: 54497 [2022-01-28 13:43:22,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 696 GetRequests, 238 SyntacticMatches, 138 SemanticMatches, 320 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 48730 ImplicationChecksByTransitivity, 39.8s TimeCoverageRelationStatistics Valid=14582, Invalid=86861, Unknown=11, NotChecked=1908, Total=103362 [2022-01-28 13:43:22,180 INFO L933 BasicCegarLoop]: 517 mSDtfsCounter, 9324 mSDsluCounter, 28271 mSDsCounter, 0 mSdLazyCounter, 6214 mSolverCounterSat, 732 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9324 SdHoareTripleChecker+Valid, 25542 SdHoareTripleChecker+Invalid, 12205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 732 IncrementalHoareTripleChecker+Valid, 6214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5259 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-28 13:43:22,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9324 Valid, 25542 Invalid, 12205 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [732 Valid, 6214 Invalid, 0 Unknown, 5259 Unchecked, 2.9s Time] [2022-01-28 13:43:22,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54497 states. [2022-01-28 13:43:22,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54497 to 15367. [2022-01-28 13:43:22,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15367 states, 15366 states have (on average 3.068592997527008) internal successors, (47152), 15366 states have internal predecessors, (47152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:43:22,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15367 states to 15367 states and 47152 transitions. [2022-01-28 13:43:22,789 INFO L78 Accepts]: Start accepts. Automaton has 15367 states and 47152 transitions. Word has length 136 [2022-01-28 13:43:22,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:43:22,789 INFO L470 AbstractCegarLoop]: Abstraction has 15367 states and 47152 transitions. [2022-01-28 13:43:22,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 4.119047619047619) internal successors, (346), 84 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:43:22,790 INFO L276 IsEmpty]: Start isEmpty. Operand 15367 states and 47152 transitions. [2022-01-28 13:43:22,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-28 13:43:22,806 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:43:22,806 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:43:22,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-01-28 13:43:23,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-01-28 13:43:23,006 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:43:23,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:43:23,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1804493899, now seen corresponding path program 21 times [2022-01-28 13:43:23,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:43:23,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830965296] [2022-01-28 13:43:23,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:43:23,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:43:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:43:23,689 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 9 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:43:23,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:43:23,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830965296] [2022-01-28 13:43:23,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830965296] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:43:23,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900417548] [2022-01-28 13:43:23,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-28 13:43:23,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:43:23,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:43:23,691 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) [2022-01-28 13:43:23,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-01-28 13:43:24,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-28 13:43:24,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:43:24,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 51 conjunts are in the unsatisfiable core [2022-01-28 13:43:24,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:43:25,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-28 13:43:25,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-28 13:43:25,568 INFO L354 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-01-28 13:43:25,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2022-01-28 13:43:25,594 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 9 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:43:25,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:43:25,729 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_726 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_726) c_~queue~0.base) (+ (* c_~front~0 4) c_~queue~0.offset 8)) 5)) is different from false [2022-01-28 13:43:25,801 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:43:25,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-01-28 13:43:25,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-28 13:43:28,052 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 3 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:43:28,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900417548] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:43:28,052 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:43:28,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 31, 31] total 80 [2022-01-28 13:43:28,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339386123] [2022-01-28 13:43:28,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:43:28,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-01-28 13:43:28,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:43:28,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-01-28 13:43:28,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=5700, Unknown=1, NotChecked=154, Total=6320 [2022-01-28 13:43:28,054 INFO L87 Difference]: Start difference. First operand 15367 states and 47152 transitions. Second operand has 80 states, 80 states have (on average 4.025) internal successors, (322), 80 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:43:40,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:43:40,307 INFO L93 Difference]: Finished difference Result 72107 states and 213044 transitions. [2022-01-28 13:43:40,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-01-28 13:43:40,307 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 4.025) internal successors, (322), 80 states have internal predecessors, (322), 0 states have call successors, (0), 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 136 [2022-01-28 13:43:40,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:43:40,483 INFO L225 Difference]: With dead ends: 72107 [2022-01-28 13:43:40,483 INFO L226 Difference]: Without dead ends: 66843 [2022-01-28 13:43:40,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 223 SyntacticMatches, 6 SemanticMatches, 201 ConstructedPredicates, 1 IntricatePredicates, 8 DeprecatedPredicates, 10808 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=5952, Invalid=34645, Unknown=9, NotChecked=400, Total=41006 [2022-01-28 13:43:40,485 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 2203 mSDsluCounter, 13964 mSDsCounter, 0 mSdLazyCounter, 2391 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2203 SdHoareTripleChecker+Valid, 14083 SdHoareTripleChecker+Invalid, 3947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 2391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1290 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-28 13:43:40,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2203 Valid, 14083 Invalid, 3947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 2391 Invalid, 0 Unknown, 1290 Unchecked, 1.0s Time] [2022-01-28 13:43:40,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66843 states. [2022-01-28 13:43:41,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66843 to 32914. [2022-01-28 13:43:41,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32914 states, 32913 states have (on average 3.1320147054355423) internal successors, (103084), 32913 states have internal predecessors, (103084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:43:41,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32914 states to 32914 states and 103084 transitions. [2022-01-28 13:43:41,457 INFO L78 Accepts]: Start accepts. Automaton has 32914 states and 103084 transitions. Word has length 136 [2022-01-28 13:43:41,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:43:41,457 INFO L470 AbstractCegarLoop]: Abstraction has 32914 states and 103084 transitions. [2022-01-28 13:43:41,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 4.025) internal successors, (322), 80 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:43:41,458 INFO L276 IsEmpty]: Start isEmpty. Operand 32914 states and 103084 transitions. [2022-01-28 13:43:41,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-28 13:43:41,489 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:43:41,489 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:43:41,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-01-28 13:43:41,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-01-28 13:43:41,703 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:43:41,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:43:41,704 INFO L85 PathProgramCache]: Analyzing trace with hash 2010186831, now seen corresponding path program 22 times [2022-01-28 13:43:41,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:43:41,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178448228] [2022-01-28 13:43:41,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:43:41,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:43:41,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:43:42,578 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:43:42,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:43:42,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178448228] [2022-01-28 13:43:42,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178448228] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:43:42,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510508537] [2022-01-28 13:43:42,578 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-28 13:43:42,578 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:43:42,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:43:42,579 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) [2022-01-28 13:43:42,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-01-28 13:43:42,665 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-28 13:43:42,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:43:42,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-28 13:43:42,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:43:42,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-28 13:43:42,881 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-28 13:43:42,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-28 13:43:43,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-28 13:43:44,286 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-28 13:43:44,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-28 13:43:44,307 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:43:44,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:43:44,491 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_764 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_764) c_~queue~0.base) (+ (* c_~front~0 4) c_~queue~0.offset 12)))) is different from false [2022-01-28 13:43:44,515 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:43:44,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-01-28 13:43:44,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-28 13:43:47,107 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-01-28 13:43:47,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510508537] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:43:47,108 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:43:47,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 84 [2022-01-28 13:43:47,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259751947] [2022-01-28 13:43:47,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:43:47,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-01-28 13:43:47,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:43:47,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-01-28 13:43:47,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=519, Invalid=6290, Unknown=1, NotChecked=162, Total=6972 [2022-01-28 13:43:47,109 INFO L87 Difference]: Start difference. First operand 32914 states and 103084 transitions. Second operand has 84 states, 84 states have (on average 4.107142857142857) internal successors, (345), 84 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:44:04,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:44:04,568 INFO L93 Difference]: Finished difference Result 164474 states and 489789 transitions. [2022-01-28 13:44:04,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2022-01-28 13:44:04,568 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 4.107142857142857) internal successors, (345), 84 states have internal predecessors, (345), 0 states have call successors, (0), 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 139 [2022-01-28 13:44:04,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:44:05,190 INFO L225 Difference]: With dead ends: 164474 [2022-01-28 13:44:05,190 INFO L226 Difference]: Without dead ends: 164427 [2022-01-28 13:44:05,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 273 SyntacticMatches, 10 SemanticMatches, 278 ConstructedPredicates, 1 IntricatePredicates, 16 DeprecatedPredicates, 22988 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=10359, Invalid=67176, Unknown=31, NotChecked=554, Total=78120 [2022-01-28 13:44:05,193 INFO L933 BasicCegarLoop]: 848 mSDtfsCounter, 2591 mSDsluCounter, 31028 mSDsCounter, 0 mSdLazyCounter, 5605 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2591 SdHoareTripleChecker+Valid, 31442 SdHoareTripleChecker+Invalid, 9792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 5605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3920 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-28 13:44:05,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2591 Valid, 31442 Invalid, 9792 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [267 Valid, 5605 Invalid, 0 Unknown, 3920 Unchecked, 2.2s Time] [2022-01-28 13:44:05,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164427 states. [2022-01-28 13:44:07,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164427 to 35285. [2022-01-28 13:44:07,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35285 states, 35284 states have (on average 3.123710463666251) internal successors, (110217), 35284 states have internal predecessors, (110217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:44:07,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35285 states to 35285 states and 110217 transitions. [2022-01-28 13:44:07,462 INFO L78 Accepts]: Start accepts. Automaton has 35285 states and 110217 transitions. Word has length 139 [2022-01-28 13:44:07,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:44:07,463 INFO L470 AbstractCegarLoop]: Abstraction has 35285 states and 110217 transitions. [2022-01-28 13:44:07,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 4.107142857142857) internal successors, (345), 84 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:44:07,463 INFO L276 IsEmpty]: Start isEmpty. Operand 35285 states and 110217 transitions. [2022-01-28 13:44:07,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-28 13:44:07,498 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:44:07,498 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:44:07,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-01-28 13:44:07,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-01-28 13:44:07,699 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:44:07,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:44:07,699 INFO L85 PathProgramCache]: Analyzing trace with hash -583514407, now seen corresponding path program 23 times [2022-01-28 13:44:07,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:44:07,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701717591] [2022-01-28 13:44:07,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:44:07,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:44:07,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:44:08,463 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:44:08,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:44:08,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701717591] [2022-01-28 13:44:08,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701717591] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:44:08,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140814693] [2022-01-28 13:44:08,464 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-28 13:44:08,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:44:08,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:44:08,465 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) [2022-01-28 13:44:08,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-01-28 13:44:08,594 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-28 13:44:08,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:44:08,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 51 conjunts are in the unsatisfiable core [2022-01-28 13:44:08,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:44:09,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-28 13:44:09,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-28 13:44:09,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-28 13:44:09,529 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-28 13:44:09,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:44:09,581 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_801 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_801) c_~queue~0.base) (+ (* c_~front~0 4) c_~queue~0.offset 12)))) is different from false [2022-01-28 13:44:09,603 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:44:09,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-01-28 13:44:09,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-28 13:44:10,230 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 46 trivial. 4 not checked. [2022-01-28 13:44:10,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140814693] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:44:10,231 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:44:10,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 26, 20] total 64 [2022-01-28 13:44:10,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908033277] [2022-01-28 13:44:10,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:44:10,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-28 13:44:10,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:44:10,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-28 13:44:10,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=3728, Unknown=1, NotChecked=122, Total=4032 [2022-01-28 13:44:10,232 INFO L87 Difference]: Start difference. First operand 35285 states and 110217 transitions. Second operand has 64 states, 64 states have (on average 4.90625) internal successors, (314), 64 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:44:17,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:44:17,192 INFO L93 Difference]: Finished difference Result 118655 states and 344479 transitions. [2022-01-28 13:44:17,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-01-28 13:44:17,192 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.90625) internal successors, (314), 64 states have internal predecessors, (314), 0 states have call successors, (0), 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 139 [2022-01-28 13:44:17,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:44:17,535 INFO L225 Difference]: With dead ends: 118655 [2022-01-28 13:44:17,535 INFO L226 Difference]: Without dead ends: 118559 [2022-01-28 13:44:17,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 6738 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=2797, Invalid=24928, Unknown=1, NotChecked=330, Total=28056 [2022-01-28 13:44:17,537 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 3179 mSDsluCounter, 8761 mSDsCounter, 0 mSdLazyCounter, 2600 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3179 SdHoareTripleChecker+Valid, 8529 SdHoareTripleChecker+Invalid, 3539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 2600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 673 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-28 13:44:17,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3179 Valid, 8529 Invalid, 3539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 2600 Invalid, 0 Unknown, 673 Unchecked, 1.1s Time] [2022-01-28 13:44:17,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118559 states. [2022-01-28 13:44:19,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118559 to 41418. [2022-01-28 13:44:19,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41418 states, 41417 states have (on average 3.1062365695245915) internal successors, (128651), 41417 states have internal predecessors, (128651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:44:19,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41418 states to 41418 states and 128651 transitions. [2022-01-28 13:44:19,575 INFO L78 Accepts]: Start accepts. Automaton has 41418 states and 128651 transitions. Word has length 139 [2022-01-28 13:44:19,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:44:19,575 INFO L470 AbstractCegarLoop]: Abstraction has 41418 states and 128651 transitions. [2022-01-28 13:44:19,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.90625) internal successors, (314), 64 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:44:19,576 INFO L276 IsEmpty]: Start isEmpty. Operand 41418 states and 128651 transitions. [2022-01-28 13:44:19,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-28 13:44:19,611 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:44:19,611 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:44:19,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-01-28 13:44:19,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:44:19,812 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:44:19,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:44:19,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1153157563, now seen corresponding path program 24 times [2022-01-28 13:44:19,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:44:19,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255393932] [2022-01-28 13:44:19,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:44:19,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:44:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:44:20,713 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:44:20,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:44:20,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255393932] [2022-01-28 13:44:20,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255393932] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:44:20,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026189577] [2022-01-28 13:44:20,713 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-28 13:44:20,713 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:44:20,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:44:20,714 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) [2022-01-28 13:44:20,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-01-28 13:44:21,235 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-28 13:44:21,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:44:21,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 53 conjunts are in the unsatisfiable core [2022-01-28 13:44:21,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:44:21,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-28 13:44:21,369 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-28 13:44:21,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-28 13:44:22,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-28 13:44:22,582 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-28 13:44:22,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-28 13:44:22,600 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 22 proven. 50 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-28 13:44:22,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:44:23,086 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:44:23,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 42 [2022-01-28 13:44:23,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-01-28 13:44:24,344 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 3 proven. 69 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-28 13:44:24,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026189577] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:44:24,344 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:44:24,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 28, 28] total 78 [2022-01-28 13:44:24,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903072171] [2022-01-28 13:44:24,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:44:24,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-01-28 13:44:24,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:44:24,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-01-28 13:44:24,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=5687, Unknown=1, NotChecked=0, Total=6006 [2022-01-28 13:44:24,347 INFO L87 Difference]: Start difference. First operand 41418 states and 128651 transitions. Second operand has 78 states, 78 states have (on average 4.269230769230769) internal successors, (333), 78 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:44:27,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:44:27,931 INFO L93 Difference]: Finished difference Result 43409 states and 133507 transitions. [2022-01-28 13:44:27,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-28 13:44:27,931 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 4.269230769230769) internal successors, (333), 78 states have internal predecessors, (333), 0 states have call successors, (0), 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 139 [2022-01-28 13:44:27,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:44:28,038 INFO L225 Difference]: With dead ends: 43409 [2022-01-28 13:44:28,038 INFO L226 Difference]: Without dead ends: 43380 [2022-01-28 13:44:28,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3557 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1604, Invalid=12915, Unknown=1, NotChecked=0, Total=14520 [2022-01-28 13:44:28,040 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 1653 mSDsluCounter, 6132 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1653 SdHoareTripleChecker+Valid, 6097 SdHoareTripleChecker+Invalid, 1967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 934 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-28 13:44:28,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1653 Valid, 6097 Invalid, 1967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 938 Invalid, 0 Unknown, 934 Unchecked, 0.4s Time] [2022-01-28 13:44:28,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43380 states. [2022-01-28 13:44:28,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43380 to 41617. [2022-01-28 13:44:28,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41617 states, 41616 states have (on average 3.103974432910419) internal successors, (129175), 41616 states have internal predecessors, (129175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:44:28,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41617 states to 41617 states and 129175 transitions. [2022-01-28 13:44:28,858 INFO L78 Accepts]: Start accepts. Automaton has 41617 states and 129175 transitions. Word has length 139 [2022-01-28 13:44:28,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:44:28,858 INFO L470 AbstractCegarLoop]: Abstraction has 41617 states and 129175 transitions. [2022-01-28 13:44:28,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 4.269230769230769) internal successors, (333), 78 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:44:28,858 INFO L276 IsEmpty]: Start isEmpty. Operand 41617 states and 129175 transitions. [2022-01-28 13:44:28,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-28 13:44:28,898 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:44:28,898 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:44:28,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-01-28 13:44:29,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-01-28 13:44:29,098 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:44:29,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:44:29,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1322586107, now seen corresponding path program 25 times [2022-01-28 13:44:29,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:44:29,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164614108] [2022-01-28 13:44:29,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:44:29,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:44:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:44:29,853 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:44:29,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:44:29,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164614108] [2022-01-28 13:44:29,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164614108] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:44:29,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255190688] [2022-01-28 13:44:29,853 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-28 13:44:29,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:44:29,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:44:29,854 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) [2022-01-28 13:44:29,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-01-28 13:44:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:44:29,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-28 13:44:29,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:44:29,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-28 13:44:30,156 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-28 13:44:30,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-28 13:44:31,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-28 13:44:31,619 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-28 13:44:31,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-28 13:44:31,637 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:44:31,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:44:31,808 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_877 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_877) c_~queue~0.base) (+ (* c_~front~0 4) c_~queue~0.offset 12)))) is different from false [2022-01-28 13:44:31,832 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:44:31,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-01-28 13:44:31,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-28 13:44:34,413 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-01-28 13:44:34,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255190688] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:44:34,414 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:44:34,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 84 [2022-01-28 13:44:34,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963343928] [2022-01-28 13:44:34,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:44:34,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-01-28 13:44:34,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:44:34,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-01-28 13:44:34,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=519, Invalid=6290, Unknown=1, NotChecked=162, Total=6972 [2022-01-28 13:44:34,415 INFO L87 Difference]: Start difference. First operand 41617 states and 129175 transitions. Second operand has 84 states, 84 states have (on average 4.107142857142857) internal successors, (345), 84 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:45:05,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:45:05,382 INFO L93 Difference]: Finished difference Result 187221 states and 544048 transitions. [2022-01-28 13:45:05,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 324 states. [2022-01-28 13:45:05,383 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 4.107142857142857) internal successors, (345), 84 states have internal predecessors, (345), 0 states have call successors, (0), 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 139 [2022-01-28 13:45:05,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:45:06,267 INFO L225 Difference]: With dead ends: 187221 [2022-01-28 13:45:06,267 INFO L226 Difference]: Without dead ends: 177016 [2022-01-28 13:45:06,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 699 GetRequests, 281 SyntacticMatches, 16 SemanticMatches, 402 ConstructedPredicates, 1 IntricatePredicates, 15 DeprecatedPredicates, 54018 ImplicationChecksByTransitivity, 24.8s TimeCoverageRelationStatistics Valid=21105, Invalid=140873, Unknown=32, NotChecked=802, Total=162812 [2022-01-28 13:45:06,273 INFO L933 BasicCegarLoop]: 1189 mSDtfsCounter, 2975 mSDsluCounter, 49562 mSDsCounter, 0 mSdLazyCounter, 14128 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2975 SdHoareTripleChecker+Valid, 45593 SdHoareTripleChecker+Invalid, 18646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 14128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4263 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-01-28 13:45:06,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2975 Valid, 45593 Invalid, 18646 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [255 Valid, 14128 Invalid, 0 Unknown, 4263 Unchecked, 5.4s Time] [2022-01-28 13:45:06,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177016 states. [2022-01-28 13:45:08,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177016 to 59747. [2022-01-28 13:45:08,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59747 states, 59746 states have (on average 3.1269708432363674) internal successors, (186824), 59746 states have internal predecessors, (186824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:45:08,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59747 states to 59747 states and 186824 transitions. [2022-01-28 13:45:08,969 INFO L78 Accepts]: Start accepts. Automaton has 59747 states and 186824 transitions. Word has length 139 [2022-01-28 13:45:08,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:45:08,969 INFO L470 AbstractCegarLoop]: Abstraction has 59747 states and 186824 transitions. [2022-01-28 13:45:08,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 4.107142857142857) internal successors, (345), 84 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:45:08,970 INFO L276 IsEmpty]: Start isEmpty. Operand 59747 states and 186824 transitions. [2022-01-28 13:45:09,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-28 13:45:09,010 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:45:09,010 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:45:09,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-01-28 13:45:09,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-01-28 13:45:09,211 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:45:09,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:45:09,211 INFO L85 PathProgramCache]: Analyzing trace with hash 864106511, now seen corresponding path program 26 times [2022-01-28 13:45:09,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:45:09,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76564976] [2022-01-28 13:45:09,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:45:09,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:45:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:45:09,861 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:45:09,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:45:09,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76564976] [2022-01-28 13:45:09,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76564976] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:45:09,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807078231] [2022-01-28 13:45:09,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-28 13:45:09,861 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:45:09,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:45:09,862 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) [2022-01-28 13:45:09,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-01-28 13:45:09,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 13:45:09,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:45:09,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-28 13:45:09,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:45:09,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-28 13:45:10,171 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-28 13:45:10,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-28 13:45:11,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-28 13:45:11,528 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-28 13:45:11,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-28 13:45:11,545 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:45:11,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:45:11,932 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_915 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_915) c_~queue~0.base) (+ (* c_~front~0 4) c_~queue~0.offset 12)))) is different from false [2022-01-28 13:45:11,954 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:45:11,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-01-28 13:45:11,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-28 13:45:14,580 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-01-28 13:45:14,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807078231] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:45:14,581 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:45:14,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 84 [2022-01-28 13:45:14,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437803058] [2022-01-28 13:45:14,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:45:14,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-01-28 13:45:14,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:45:14,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-01-28 13:45:14,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=519, Invalid=6290, Unknown=1, NotChecked=162, Total=6972 [2022-01-28 13:45:14,582 INFO L87 Difference]: Start difference. First operand 59747 states and 186824 transitions. Second operand has 84 states, 84 states have (on average 4.107142857142857) internal successors, (345), 84 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:45:29,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:45:29,843 INFO L93 Difference]: Finished difference Result 118949 states and 348288 transitions. [2022-01-28 13:45:29,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2022-01-28 13:45:29,847 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 4.107142857142857) internal successors, (345), 84 states have internal predecessors, (345), 0 states have call successors, (0), 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 139 [2022-01-28 13:45:29,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:45:30,319 INFO L225 Difference]: With dead ends: 118949 [2022-01-28 13:45:30,319 INFO L226 Difference]: Without dead ends: 118745 [2022-01-28 13:45:30,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 245 SyntacticMatches, 15 SemanticMatches, 237 ConstructedPredicates, 1 IntricatePredicates, 16 DeprecatedPredicates, 16261 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=7749, Invalid=48645, Unknown=16, NotChecked=472, Total=56882 [2022-01-28 13:45:30,322 INFO L933 BasicCegarLoop]: 958 mSDtfsCounter, 2496 mSDsluCounter, 43499 mSDsCounter, 0 mSdLazyCounter, 10197 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2496 SdHoareTripleChecker+Valid, 41477 SdHoareTripleChecker+Invalid, 13828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 10197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3416 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-01-28 13:45:30,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2496 Valid, 41477 Invalid, 13828 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [215 Valid, 10197 Invalid, 0 Unknown, 3416 Unchecked, 3.9s Time] [2022-01-28 13:45:30,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118745 states. [2022-01-28 13:45:32,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118745 to 63720. [2022-01-28 13:45:32,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63720 states, 63719 states have (on average 3.102041777177922) internal successors, (197659), 63719 states have internal predecessors, (197659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:45:32,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63720 states to 63720 states and 197659 transitions. [2022-01-28 13:45:32,840 INFO L78 Accepts]: Start accepts. Automaton has 63720 states and 197659 transitions. Word has length 139 [2022-01-28 13:45:32,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:45:32,840 INFO L470 AbstractCegarLoop]: Abstraction has 63720 states and 197659 transitions. [2022-01-28 13:45:32,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 4.107142857142857) internal successors, (345), 84 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:45:32,841 INFO L276 IsEmpty]: Start isEmpty. Operand 63720 states and 197659 transitions. [2022-01-28 13:45:32,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-28 13:45:32,900 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:45:32,900 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:45:32,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-01-28 13:45:33,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:45:33,115 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:45:33,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:45:33,116 INFO L85 PathProgramCache]: Analyzing trace with hash 300325509, now seen corresponding path program 27 times [2022-01-28 13:45:33,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:45:33,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838563108] [2022-01-28 13:45:33,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:45:33,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:45:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:45:33,987 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:45:33,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:45:33,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838563108] [2022-01-28 13:45:33,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838563108] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:45:33,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841965238] [2022-01-28 13:45:33,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-28 13:45:33,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:45:33,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:45:33,989 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) [2022-01-28 13:45:33,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-01-28 13:45:34,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-28 13:45:34,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:45:34,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 56 conjunts are in the unsatisfiable core [2022-01-28 13:45:34,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:45:34,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-28 13:45:34,360 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-28 13:45:34,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-28 13:45:35,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-28 13:45:35,636 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-28 13:45:35,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-28 13:45:35,654 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 60 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-28 13:45:35,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:45:36,171 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:45:36,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 42 [2022-01-28 13:45:36,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-01-28 13:45:38,243 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 63 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-28 13:45:38,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841965238] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:45:38,244 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:45:38,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 30, 30] total 81 [2022-01-28 13:45:38,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095831748] [2022-01-28 13:45:38,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:45:38,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-01-28 13:45:38,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:45:38,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-01-28 13:45:38,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=568, Invalid=5912, Unknown=0, NotChecked=0, Total=6480 [2022-01-28 13:45:38,245 INFO L87 Difference]: Start difference. First operand 63720 states and 197659 transitions. Second operand has 81 states, 81 states have (on average 4.160493827160494) internal successors, (337), 81 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:45:43,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:45:43,389 INFO L93 Difference]: Finished difference Result 77669 states and 234702 transitions. [2022-01-28 13:45:43,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-28 13:45:43,389 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 4.160493827160494) internal successors, (337), 81 states have internal predecessors, (337), 0 states have call successors, (0), 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 139 [2022-01-28 13:45:43,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:45:43,596 INFO L225 Difference]: With dead ends: 77669 [2022-01-28 13:45:43,597 INFO L226 Difference]: Without dead ends: 77327 [2022-01-28 13:45:43,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 239 SyntacticMatches, 9 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 6 DeprecatedPredicates, 5369 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=2572, Invalid=15788, Unknown=0, NotChecked=0, Total=18360 [2022-01-28 13:45:43,598 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 2270 mSDsluCounter, 5940 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2270 SdHoareTripleChecker+Valid, 5980 SdHoareTripleChecker+Invalid, 1616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 454 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-28 13:45:43,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2270 Valid, 5980 Invalid, 1616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1041 Invalid, 0 Unknown, 454 Unchecked, 0.5s Time] [2022-01-28 13:45:43,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77327 states. [2022-01-28 13:45:45,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77327 to 67610. [2022-01-28 13:45:45,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67610 states, 67609 states have (on average 3.0850034758685974) internal successors, (208574), 67609 states have internal predecessors, (208574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:45:45,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67610 states to 67610 states and 208574 transitions. [2022-01-28 13:45:45,548 INFO L78 Accepts]: Start accepts. Automaton has 67610 states and 208574 transitions. Word has length 139 [2022-01-28 13:45:45,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:45:45,548 INFO L470 AbstractCegarLoop]: Abstraction has 67610 states and 208574 transitions. [2022-01-28 13:45:45,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 4.160493827160494) internal successors, (337), 81 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:45:45,548 INFO L276 IsEmpty]: Start isEmpty. Operand 67610 states and 208574 transitions. [2022-01-28 13:45:45,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-28 13:45:45,604 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:45:45,604 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:45:45,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-01-28 13:45:45,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:45:45,808 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 13:45:45,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:45:45,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1274463897, now seen corresponding path program 28 times [2022-01-28 13:45:45,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:45:45,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634130969] [2022-01-28 13:45:45,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:45:45,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:45:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:45:46,779 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:45:46,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:45:46,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634130969] [2022-01-28 13:45:46,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634130969] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:45:46,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789868827] [2022-01-28 13:45:46,780 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-28 13:45:46,780 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:45:46,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:45:46,781 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) [2022-01-28 13:45:46,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-01-28 13:45:46,874 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-28 13:45:46,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:45:46,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-28 13:45:46,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:45:46,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-28 13:45:47,071 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-28 13:45:47,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-28 13:45:48,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-28 13:45:48,378 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-28 13:45:48,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-01-28 13:45:48,396 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:45:48,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:45:48,575 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_991 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_991) c_~queue~0.base) (+ (* c_~front~0 4) c_~queue~0.offset 12)))) is different from false [2022-01-28 13:45:48,598 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-28 13:45:48,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-01-28 13:45:48,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-28 13:45:51,208 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-01-28 13:45:51,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789868827] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:45:51,209 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:45:51,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 86 [2022-01-28 13:45:51,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512433111] [2022-01-28 13:45:51,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:45:51,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-01-28 13:45:51,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:45:51,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-01-28 13:45:51,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=545, Invalid=6598, Unknown=1, NotChecked=166, Total=7310 [2022-01-28 13:45:51,210 INFO L87 Difference]: Start difference. First operand 67610 states and 208574 transitions. Second operand has 86 states, 86 states have (on average 4.058139534883721) internal successors, (349), 86 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:46:23,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2022-01-28 13:46:23,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 250 SyntacticMatches, 110 SemanticMatches, 302 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 40426 ImplicationChecksByTransitivity, 30.6s TimeCoverageRelationStatistics Valid=11804, Invalid=79603, Unknown=103, NotChecked=602, Total=92112 [2022-01-28 13:46:23,867 INFO L933 BasicCegarLoop]: 840 mSDtfsCounter, 3644 mSDsluCounter, 33662 mSDsCounter, 0 mSdLazyCounter, 7403 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3644 SdHoareTripleChecker+Valid, 32513 SdHoareTripleChecker+Invalid, 12060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 7403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4413 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-28 13:46:23,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3644 Valid, 32513 Invalid, 12060 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [244 Valid, 7403 Invalid, 0 Unknown, 4413 Unchecked, 3.0s Time] [2022-01-28 13:46:23,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-01-28 13:46:24,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:46:24,080 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: at most one deprecated predicate at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:980) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:388) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-01-28 13:46:24,083 INFO L158 Benchmark]: Toolchain (without parser) took 325815.36ms. Allocated memory was 198.2MB in the beginning and 3.6GB in the end (delta: 3.4GB). Free memory was 147.8MB in the beginning and 2.4GB in the end (delta: -2.2GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2022-01-28 13:46:24,083 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 198.2MB. Free memory is still 163.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-28 13:46:24,083 INFO L158 Benchmark]: CACSL2BoogieTranslator took 268.83ms. Allocated memory was 198.2MB in the beginning and 269.5MB in the end (delta: 71.3MB). Free memory was 147.6MB in the beginning and 246.3MB in the end (delta: -98.7MB). Peak memory consumption was 11.7MB. Max. memory is 8.0GB. [2022-01-28 13:46:24,083 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.82ms. Allocated memory is still 269.5MB. Free memory was 246.3MB in the beginning and 244.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-28 13:46:24,084 INFO L158 Benchmark]: Boogie Preprocessor took 32.48ms. Allocated memory is still 269.5MB. Free memory was 244.3MB in the beginning and 242.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-28 13:46:24,084 INFO L158 Benchmark]: RCFGBuilder took 335.57ms. Allocated memory is still 269.5MB. Free memory was 242.7MB in the beginning and 223.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-01-28 13:46:24,084 INFO L158 Benchmark]: TraceAbstraction took 325133.51ms. Allocated memory was 269.5MB in the beginning and 3.6GB in the end (delta: 3.4GB). Free memory was 223.3MB in the beginning and 2.4GB in the end (delta: -2.2GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2022-01-28 13:46:24,085 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 198.2MB. Free memory is still 163.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 268.83ms. Allocated memory was 198.2MB in the beginning and 269.5MB in the end (delta: 71.3MB). Free memory was 147.6MB in the beginning and 246.3MB in the end (delta: -98.7MB). Peak memory consumption was 11.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 40.82ms. Allocated memory is still 269.5MB. Free memory was 246.3MB in the beginning and 244.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.48ms. Allocated memory is still 269.5MB. Free memory was 244.3MB in the beginning and 242.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 335.57ms. Allocated memory is still 269.5MB. Free memory was 242.7MB in the beginning and 223.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 325133.51ms. Allocated memory was 269.5MB in the beginning and 3.6GB in the end (delta: 3.4GB). Free memory was 223.3MB in the beginning and 2.4GB in the end (delta: -2.2GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: at most one deprecated predicate de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: at most one deprecated predicate: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:980) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-01-28 13:46:24,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...