/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 19:04:33,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 19:04:33,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 19:04:33,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 19:04:33,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 19:04:33,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 19:04:33,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 19:04:33,487 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 19:04:33,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 19:04:33,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 19:04:33,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 19:04:33,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-15 19:04:33,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 19:04:33,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 19:04:33,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 19:04:33,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 19:04:33,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 19:04:33,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 19:04:33,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 19:04:33,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 19:04:33,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 19:04:33,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 19:04:33,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 19:04:33,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 19:04:33,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-15 19:04:33,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-15 19:04:33,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-15 19:04:33,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-15 19:04:33,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-15 19:04:33,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-15 19:04:33,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-15 19:04:33,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-15 19:04:33,512 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-15 19:04:33,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-15 19:04:33,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-15 19:04:33,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-15 19:04:33,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-15 19:04:33,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-15 19:04:33,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 19:04:33,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 19:04:33,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 19:04:33,518 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2022-03-15 19:04:33,540 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 19:04:33,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 19:04:33,542 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 19:04:33,542 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 19:04:33,542 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 19:04:33,542 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 19:04:33,542 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 19:04:33,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 19:04:33,543 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 19:04:33,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 19:04:33,543 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 19:04:33,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 19:04:33,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 19:04:33,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 19:04:33,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 19:04:33,544 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 19:04:33,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 19:04:33,544 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 19:04:33,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 19:04:33,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 19:04:33,545 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 19:04:33,545 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 19:04:33,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 19:04:33,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 19:04:33,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 19:04:33,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 19:04:33,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 19:04:33,546 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 19:04:33,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 19:04:33,547 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 19:04:33,547 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 19:04:33,547 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 19:04:33,547 INFO L138 SettingsManager]: * Interpolant automaton=MCR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 19:04:33,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 19:04:33,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 19:04:33,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 19:04:33,793 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 19:04:33,795 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 19:04:33,796 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt.wvr.c [2022-03-15 19:04:33,838 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/affc178b9/f94739e7164d46bf814aa59e6ff7c825/FLAGd2c925a5b [2022-03-15 19:04:34,253 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 19:04:34,254 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt.wvr.c [2022-03-15 19:04:34,265 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/affc178b9/f94739e7164d46bf814aa59e6ff7c825/FLAGd2c925a5b [2022-03-15 19:04:34,279 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/affc178b9/f94739e7164d46bf814aa59e6ff7c825 [2022-03-15 19:04:34,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 19:04:34,284 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 19:04:34,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 19:04:34,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 19:04:34,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 19:04:34,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 07:04:34" (1/1) ... [2022-03-15 19:04:34,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a7df2ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:04:34, skipping insertion in model container [2022-03-15 19:04:34,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 07:04:34" (1/1) ... [2022-03-15 19:04:34,296 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 19:04:34,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 19:04:34,501 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-bad-buffer-mult-alt.wvr.c[4293,4306] [2022-03-15 19:04:34,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 19:04:34,524 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 19:04:34,553 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-bad-buffer-mult-alt.wvr.c[4293,4306] [2022-03-15 19:04:34,557 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 19:04:34,569 INFO L208 MainTranslator]: Completed translation [2022-03-15 19:04:34,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:04:34 WrapperNode [2022-03-15 19:04:34,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 19:04:34,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 19:04:34,570 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 19:04:34,570 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 19:04:34,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:04:34" (1/1) ... [2022-03-15 19:04:34,594 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:04:34" (1/1) ... [2022-03-15 19:04:34,619 INFO L137 Inliner]: procedures = 26, calls = 79, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 319 [2022-03-15 19:04:34,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 19:04:34,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 19:04:34,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 19:04:34,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 19:04:34,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:04:34" (1/1) ... [2022-03-15 19:04:34,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:04:34" (1/1) ... [2022-03-15 19:04:34,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:04:34" (1/1) ... [2022-03-15 19:04:34,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:04:34" (1/1) ... [2022-03-15 19:04:34,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:04:34" (1/1) ... [2022-03-15 19:04:34,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:04:34" (1/1) ... [2022-03-15 19:04:34,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:04:34" (1/1) ... [2022-03-15 19:04:34,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 19:04:34,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 19:04:34,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 19:04:34,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 19:04:34,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:04:34" (1/1) ... [2022-03-15 19:04:34,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 19:04:34,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:04:34,693 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-15 19:04:34,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-15 19:04:34,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 19:04:34,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 19:04:34,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 19:04:34,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-15 19:04:34,723 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 19:04:34,723 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 19:04:34,723 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 19:04:34,724 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 19:04:34,724 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-15 19:04:34,724 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-15 19:04:34,724 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-03-15 19:04:34,724 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-03-15 19:04:34,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 19:04:34,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-15 19:04:34,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-15 19:04:34,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-15 19:04:34,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 19:04:34,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 19:04:34,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 19:04:34,726 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 19:04:34,865 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 19:04:34,866 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 19:04:35,304 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 19:04:35,417 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 19:04:35,417 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-03-15 19:04:35,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 07:04:35 BoogieIcfgContainer [2022-03-15 19:04:35,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 19:04:35,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 19:04:35,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 19:04:35,434 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 19:04:35,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 07:04:34" (1/3) ... [2022-03-15 19:04:35,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6519c531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 07:04:35, skipping insertion in model container [2022-03-15 19:04:35,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:04:34" (2/3) ... [2022-03-15 19:04:35,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6519c531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 07:04:35, skipping insertion in model container [2022-03-15 19:04:35,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 07:04:35" (3/3) ... [2022-03-15 19:04:35,437 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt.wvr.c [2022-03-15 19:04:35,440 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 19:04:35,441 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 19:04:35,441 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 19:04:35,441 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 19:04:35,503 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,503 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,503 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,504 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,504 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,504 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,504 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,504 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,505 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,505 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,505 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,505 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,505 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,505 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,505 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,506 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,506 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,507 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,507 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,507 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,507 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,507 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,508 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,509 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,509 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,509 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,510 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,510 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,510 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,511 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,511 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,511 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,512 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,512 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,512 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,513 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,513 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,513 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,513 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,513 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,513 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,513 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,514 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,514 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,514 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,514 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,515 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,515 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,515 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,515 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,516 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,516 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,516 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,517 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,517 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,517 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,518 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,518 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,518 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,518 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,518 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,519 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,519 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,519 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,519 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,519 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,519 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,519 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,519 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,520 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,520 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,520 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,520 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,521 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,521 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,521 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,521 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,521 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,521 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,521 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,521 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,521 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,522 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,522 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,524 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,525 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,527 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,532 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,532 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,532 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,533 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,533 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,533 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,533 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,533 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,533 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,534 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,534 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,534 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,534 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,534 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,534 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,534 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,534 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,535 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,535 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,536 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,536 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,536 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,536 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,536 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,537 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,537 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,537 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,537 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,537 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,542 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,542 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,542 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,542 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,542 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,542 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,542 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,542 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,543 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,543 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,543 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,544 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,544 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,544 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,544 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,544 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,544 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,544 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,544 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,544 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,544 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,544 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,545 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,545 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,545 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,545 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,545 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,545 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,545 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,546 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,546 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,546 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,546 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,546 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,546 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,547 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,548 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,548 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,548 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,548 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,548 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,548 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,548 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,548 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:04:35,552 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-03-15 19:04:35,599 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 19:04:35,608 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=MCR, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=true, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 19:04:35,608 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-03-15 19:04:35,622 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 19:04:35,628 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 241 places, 247 transitions, 526 flow [2022-03-15 19:04:35,631 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 241 places, 247 transitions, 526 flow [2022-03-15 19:04:35,632 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 241 places, 247 transitions, 526 flow [2022-03-15 19:04:35,745 INFO L129 PetriNetUnfolder]: 19/243 cut-off events. [2022-03-15 19:04:35,745 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-03-15 19:04:35,750 INFO L84 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 243 events. 19/243 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 117 event pairs, 0 based on Foata normal form. 0/223 useless extension candidates. Maximal degree in co-relation 204. Up to 2 conditions per place. [2022-03-15 19:04:35,753 INFO L116 LiptonReduction]: Number of co-enabled transitions 2000 [2022-03-15 19:04:47,171 INFO L131 LiptonReduction]: Checked pairs total: 4188 [2022-03-15 19:04:47,172 INFO L133 LiptonReduction]: Total number of compositions: 246 [2022-03-15 19:04:47,181 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 42 transitions, 116 flow [2022-03-15 19:04:47,259 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 854 states, 853 states have (on average 4.173505275498242) internal successors, (3560), 853 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:04:47,263 INFO L276 IsEmpty]: Start isEmpty. Operand has 854 states, 853 states have (on average 4.173505275498242) internal successors, (3560), 853 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:04:47,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-15 19:04:47,281 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:04:47,282 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] [2022-03-15 19:04:47,282 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:04:47,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:04:47,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1610980798, now seen corresponding path program 1 times [2022-03-15 19:04:47,301 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:04:47,301 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787678211] [2022-03-15 19:04:47,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:04:47,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:04:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:04:47,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:04:47,712 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:04:47,712 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787678211] [2022-03-15 19:04:47,713 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787678211] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 19:04:47,713 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 19:04:47,713 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-15 19:04:47,714 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [390680756] [2022-03-15 19:04:47,714 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:04:47,722 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:04:47,905 INFO L252 McrAutomatonBuilder]: Finished intersection with 324 states and 947 transitions. [2022-03-15 19:04:47,905 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:04:50,966 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [1958#(< ~i~0 ~N~0), 1957#(not (= (mod |thread3Thread1of1ForFork1_~cond~2#1| 256) 0))] [2022-03-15 19:04:50,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 19:04:50,968 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:04:50,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 19:04:50,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-03-15 19:04:50,992 INFO L87 Difference]: Start difference. First operand has 854 states, 853 states have (on average 4.173505275498242) internal successors, (3560), 853 states have internal predecessors, (3560), 0 states have call successors, (0), 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 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:04:51,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:04:51,198 INFO L93 Difference]: Finished difference Result 1644 states and 6868 transitions. [2022-03-15 19:04:51,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 19:04:51,200 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 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 27 [2022-03-15 19:04:51,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:04:51,230 INFO L225 Difference]: With dead ends: 1644 [2022-03-15 19:04:51,230 INFO L226 Difference]: Without dead ends: 1394 [2022-03-15 19:04:51,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 287 SyntacticMatches, 8 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-15 19:04:51,237 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 99 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:04:51,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 24 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:04:51,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2022-03-15 19:04:51,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1234. [2022-03-15 19:04:51,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1233 states have (on average 4.197891321978913) internal successors, (5176), 1233 states have internal predecessors, (5176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:04:51,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 5176 transitions. [2022-03-15 19:04:51,356 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 5176 transitions. Word has length 27 [2022-03-15 19:04:51,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:04:51,356 INFO L470 AbstractCegarLoop]: Abstraction has 1234 states and 5176 transitions. [2022-03-15 19:04:51,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:04:51,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 5176 transitions. [2022-03-15 19:04:51,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-15 19:04:51,363 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:04:51,363 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] [2022-03-15 19:04:51,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 19:04:51,364 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:04:51,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:04:51,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1192371069, now seen corresponding path program 1 times [2022-03-15 19:04:51,367 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:04:51,370 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564558530] [2022-03-15 19:04:51,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:04:51,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:04:51,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:04:51,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:04:51,465 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:04:51,465 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564558530] [2022-03-15 19:04:51,465 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564558530] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 19:04:51,465 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 19:04:51,465 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 19:04:51,465 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [793516819] [2022-03-15 19:04:51,465 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:04:51,471 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:04:51,593 INFO L252 McrAutomatonBuilder]: Finished intersection with 278 states and 767 transitions. [2022-03-15 19:04:51,593 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:04:53,164 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 19:04:53,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 19:04:53,165 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:04:53,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 19:04:53,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-15 19:04:53,166 INFO L87 Difference]: Start difference. First operand 1234 states and 5176 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:04:53,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:04:53,249 INFO L93 Difference]: Finished difference Result 1417 states and 5771 transitions. [2022-03-15 19:04:53,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 19:04:53,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2022-03-15 19:04:53,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:04:53,259 INFO L225 Difference]: With dead ends: 1417 [2022-03-15 19:04:53,259 INFO L226 Difference]: Without dead ends: 1235 [2022-03-15 19:04:53,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-15 19:04:53,261 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 17 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:04:53,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 18 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:04:53,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2022-03-15 19:04:53,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1235. [2022-03-15 19:04:53,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 1234 states have (on average 4.195299837925446) internal successors, (5177), 1234 states have internal predecessors, (5177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:04:53,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 5177 transitions. [2022-03-15 19:04:53,300 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 5177 transitions. Word has length 29 [2022-03-15 19:04:53,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:04:53,300 INFO L470 AbstractCegarLoop]: Abstraction has 1235 states and 5177 transitions. [2022-03-15 19:04:53,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:04:53,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 5177 transitions. [2022-03-15 19:04:53,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-15 19:04:53,305 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:04:53,305 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] [2022-03-15 19:04:53,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 19:04:53,306 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:04:53,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:04:53,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1547337771, now seen corresponding path program 1 times [2022-03-15 19:04:53,307 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:04:53,307 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607438297] [2022-03-15 19:04:53,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:04:53,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:04:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:04:53,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:04:53,461 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:04:53,463 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607438297] [2022-03-15 19:04:53,465 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607438297] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:04:53,465 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955563829] [2022-03-15 19:04:53,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:04:53,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:04:53,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:04:53,471 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:04:53,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-15 19:04:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:04:53,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-15 19:04:53,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:04:53,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:04:53,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:04:53,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:04:53,963 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955563829] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-15 19:04:53,963 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-15 19:04:53,964 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 14 [2022-03-15 19:04:53,964 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1350875048] [2022-03-15 19:04:53,964 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:04:53,971 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:04:54,128 INFO L252 McrAutomatonBuilder]: Finished intersection with 279 states and 768 transitions. [2022-03-15 19:04:54,129 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:04:58,220 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [10153#(or (not (= (mod |thread3Thread1of1ForFork1_~cond~2#1| 256) 0)) (not (= (mod |thread1Thread1of1ForFork2_~cond~0#1| 256) 0))), 9968#(or (< ~i~0 ~N~0) (< ~q1_front~0 ~q1_back~0)), 10152#(not (= (mod |thread1Thread1of1ForFork2_~cond~0#1| 256) 0)), 10156#(or (<= (+ ~q1_front~0 1) ~q1_back~0) (not (= (mod |thread1Thread1of1ForFork2_~cond~0#1| 256) 0))), 10154#(or (< ~i~0 ~N~0) (< ~q1_front~0 ~q1_back~0) (not (= (mod |thread1Thread1of1ForFork2_~cond~0#1| 256) 0))), 10155#(or (< (+ ~i~0 1) ~N~0) (< ~q1_front~0 ~q1_back~0))] [2022-03-15 19:04:58,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 19:04:58,221 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:04:58,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 19:04:58,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-03-15 19:04:58,222 INFO L87 Difference]: Start difference. First operand 1235 states and 5177 transitions. Second operand has 12 states, 12 states have (on average 9.0) internal successors, (108), 12 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:04:58,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:04:58,690 INFO L93 Difference]: Finished difference Result 2325 states and 9803 transitions. [2022-03-15 19:04:58,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 19:04:58,691 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 12 states have internal predecessors, (108), 0 states have call successors, (0), 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 30 [2022-03-15 19:04:58,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:04:58,708 INFO L225 Difference]: With dead ends: 2325 [2022-03-15 19:04:58,708 INFO L226 Difference]: Without dead ends: 2325 [2022-03-15 19:04:58,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 244 SyntacticMatches, 51 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 777 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2022-03-15 19:04:58,711 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 166 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:04:58,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 78 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 19:04:58,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2325 states. [2022-03-15 19:04:58,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2325 to 1435. [2022-03-15 19:04:58,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1435 states, 1434 states have (on average 4.207112970711297) internal successors, (6033), 1434 states have internal predecessors, (6033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:04:58,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1435 states to 1435 states and 6033 transitions. [2022-03-15 19:04:58,779 INFO L78 Accepts]: Start accepts. Automaton has 1435 states and 6033 transitions. Word has length 30 [2022-03-15 19:04:58,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:04:58,780 INFO L470 AbstractCegarLoop]: Abstraction has 1435 states and 6033 transitions. [2022-03-15 19:04:58,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 12 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:04:58,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states and 6033 transitions. [2022-03-15 19:04:58,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-15 19:04:58,786 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:04:58,786 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] [2022-03-15 19:04:58,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-15 19:04:58,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:04:59,000 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:04:59,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:04:59,000 INFO L85 PathProgramCache]: Analyzing trace with hash -531755317, now seen corresponding path program 1 times [2022-03-15 19:04:59,001 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:04:59,001 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5675320] [2022-03-15 19:04:59,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:04:59,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:04:59,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:04:59,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:04:59,605 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:04:59,606 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5675320] [2022-03-15 19:04:59,606 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5675320] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:04:59,606 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319498875] [2022-03-15 19:04:59,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:04:59,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:04:59,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:04:59,609 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:04:59,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-15 19:04:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:04:59,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-15 19:04:59,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:05:00,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:05:00,066 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 19:05:00,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:05:00,136 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 19:05:00,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:05:00,211 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 19:05:00,310 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2022-03-15 19:05:00,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:05:00,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:05:01,156 INFO L353 Elim1Store]: treesize reduction 12, result has 25.0 percent of original size [2022-03-15 19:05:01,157 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 342 treesize of output 322 [2022-03-15 19:05:01,166 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 314 treesize of output 266 [2022-03-15 19:05:01,178 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 121 [2022-03-15 19:05:01,186 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 254 treesize of output 230 [2022-03-15 19:05:01,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:05:01,560 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319498875] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:05:01,560 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:05:01,560 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 13] total 31 [2022-03-15 19:05:01,560 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [206841807] [2022-03-15 19:05:01,560 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:05:01,568 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:05:01,762 INFO L252 McrAutomatonBuilder]: Finished intersection with 405 states and 1179 transitions. [2022-03-15 19:05:01,763 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:05:10,903 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [15585#(or (<= ~q1_back~0 ~q1_front~0) (< ~q1_front~0 0) (<= ~n1~0 ~q1_front~0) (< 0 (+ ~total~0 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4))))) (< (+ ~total~0 2147483648 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4)))) 0))] [2022-03-15 19:05:10,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 19:05:10,903 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:05:10,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 19:05:10,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=955, Unknown=8, NotChecked=0, Total=1122 [2022-03-15 19:05:10,904 INFO L87 Difference]: Start difference. First operand 1435 states and 6033 transitions. Second operand has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:05:11,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:05:11,494 INFO L93 Difference]: Finished difference Result 2803 states and 11777 transitions. [2022-03-15 19:05:11,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 19:05:11,495 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 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 32 [2022-03-15 19:05:11,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:05:11,514 INFO L225 Difference]: With dead ends: 2803 [2022-03-15 19:05:11,514 INFO L226 Difference]: Without dead ends: 2766 [2022-03-15 19:05:11,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 388 SyntacticMatches, 7 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=177, Invalid=1075, Unknown=8, NotChecked=0, Total=1260 [2022-03-15 19:05:11,517 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 61 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:05:11,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 58 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 19:05:11,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2022-03-15 19:05:11,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 2246. [2022-03-15 19:05:11,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2246 states, 2245 states have (on average 4.216481069042317) internal successors, (9466), 2245 states have internal predecessors, (9466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:05:11,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2246 states to 2246 states and 9466 transitions. [2022-03-15 19:05:11,597 INFO L78 Accepts]: Start accepts. Automaton has 2246 states and 9466 transitions. Word has length 32 [2022-03-15 19:05:11,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:05:11,598 INFO L470 AbstractCegarLoop]: Abstraction has 2246 states and 9466 transitions. [2022-03-15 19:05:11,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:05:11,598 INFO L276 IsEmpty]: Start isEmpty. Operand 2246 states and 9466 transitions. [2022-03-15 19:05:11,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-15 19:05:11,607 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:05:11,607 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-15 19:05:11,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-15 19:05:11,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-03-15 19:05:11,823 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:05:11,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:05:11,824 INFO L85 PathProgramCache]: Analyzing trace with hash 71781213, now seen corresponding path program 2 times [2022-03-15 19:05:11,825 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:05:11,825 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656133114] [2022-03-15 19:05:11,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:05:11,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:05:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:05:12,512 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:05:12,512 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:05:12,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656133114] [2022-03-15 19:05:12,513 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656133114] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:05:12,513 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611794743] [2022-03-15 19:05:12,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 19:05:12,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:05:12,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:05:12,514 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:05:12,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-15 19:05:12,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:05:12,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:05:12,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 36 conjunts are in the unsatisfiable core [2022-03-15 19:05:12,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:05:12,657 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 125 [2022-03-15 19:05:12,857 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 19:05:12,890 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 19:05:12,917 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 19:05:12,958 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-15 19:05:12,991 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:05:12,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:05:13,057 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_266 (Array Int Int))) (< 0 (+ c_~total~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_266) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset))))) is different from false [2022-03-15 19:05:13,066 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_265 (Array Int Int)) (v_ArrVal_266 (Array Int Int))) (< 0 (+ c_~total~0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_265) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_266) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset))))) is different from false [2022-03-15 19:05:13,080 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_265 (Array Int Int)) (v_ArrVal_264 (Array Int Int)) (v_ArrVal_266 (Array Int Int))) (< 0 (+ (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_264) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_265) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_266) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) c_~total~0))) is different from false [2022-03-15 19:05:13,100 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:05:13,100 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 682 treesize of output 658 [2022-03-15 19:05:13,106 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 638 treesize of output 590 [2022-03-15 19:05:13,112 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 590 treesize of output 494 [2022-03-15 19:05:13,120 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 259 treesize of output 235 [2022-03-15 19:05:13,785 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2022-03-15 19:05:13,785 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611794743] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:05:13,785 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:05:13,785 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 21 [2022-03-15 19:05:13,785 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [681595694] [2022-03-15 19:05:13,786 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:05:13,792 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:05:13,926 INFO L252 McrAutomatonBuilder]: Finished intersection with 406 states and 1180 transitions. [2022-03-15 19:05:13,926 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:05:22,391 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [23100#(or (<= ~q1_back~0 ~q1_front~0) (< ~q1_front~0 0) (<= ~n1~0 ~q1_front~0) (< 0 (+ ~total~0 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4))))) (< (+ ~total~0 2147483648 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4)))) 0))] [2022-03-15 19:05:22,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 19:05:22,392 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:05:22,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 19:05:22,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=351, Unknown=3, NotChecked=120, Total=552 [2022-03-15 19:05:22,393 INFO L87 Difference]: Start difference. First operand 2246 states and 9466 transitions. Second operand has 11 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:05:22,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:05:22,964 INFO L93 Difference]: Finished difference Result 4100 states and 17294 transitions. [2022-03-15 19:05:22,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 19:05:22,964 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 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 33 [2022-03-15 19:05:22,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:05:23,010 INFO L225 Difference]: With dead ends: 4100 [2022-03-15 19:05:23,010 INFO L226 Difference]: Without dead ends: 4063 [2022-03-15 19:05:23,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 407 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=427, Unknown=3, NotChecked=132, Total=650 [2022-03-15 19:05:23,011 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 61 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 19:05:23,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 82 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 19:05:23,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4063 states. [2022-03-15 19:05:23,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4063 to 2545. [2022-03-15 19:05:23,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2545 states, 2544 states have (on average 4.23624213836478) internal successors, (10777), 2544 states have internal predecessors, (10777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:05:23,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2545 states to 2545 states and 10777 transitions. [2022-03-15 19:05:23,104 INFO L78 Accepts]: Start accepts. Automaton has 2545 states and 10777 transitions. Word has length 33 [2022-03-15 19:05:23,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:05:23,105 INFO L470 AbstractCegarLoop]: Abstraction has 2545 states and 10777 transitions. [2022-03-15 19:05:23,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:05:23,105 INFO L276 IsEmpty]: Start isEmpty. Operand 2545 states and 10777 transitions. [2022-03-15 19:05:23,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 19:05:23,113 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:05:23,113 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-15 19:05:23,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-15 19:05:23,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:05:23,334 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:05:23,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:05:23,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1601544459, now seen corresponding path program 3 times [2022-03-15 19:05:23,336 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:05:23,336 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473695514] [2022-03-15 19:05:23,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:05:23,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:05:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:05:23,885 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:05:23,886 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:05:23,886 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473695514] [2022-03-15 19:05:23,886 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473695514] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:05:23,886 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968385333] [2022-03-15 19:05:23,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 19:05:23,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:05:23,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:05:23,888 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:05:23,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-15 19:05:24,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 19:05:24,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:05:24,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-15 19:05:24,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:05:24,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:05:24,236 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 19:05:24,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:05:24,274 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 19:05:24,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:05:24,311 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 19:05:24,342 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-15 19:05:24,376 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 19:05:24,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:05:24,438 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_341 (Array Int Int))) (<= 1 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_341) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) c_~total~0))) is different from false [2022-03-15 19:05:24,447 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_340 (Array Int Int)) (v_ArrVal_341 (Array Int Int))) (<= 1 (+ c_~total~0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_340) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_341) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset))))) is different from false [2022-03-15 19:05:24,456 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_339 (Array Int Int)) (v_ArrVal_340 (Array Int Int)) (v_ArrVal_341 (Array Int Int))) (<= 1 (+ (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_339) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_340) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_341) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) c_~total~0))) is different from false [2022-03-15 19:05:24,474 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:05:24,475 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 682 treesize of output 658 [2022-03-15 19:05:24,482 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 638 treesize of output 542 [2022-03-15 19:05:24,488 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 542 treesize of output 494 [2022-03-15 19:05:24,495 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 494 treesize of output 470 [2022-03-15 19:05:25,290 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 1 not checked. [2022-03-15 19:05:25,290 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968385333] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:05:25,290 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:05:25,290 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 23 [2022-03-15 19:05:25,290 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1111853754] [2022-03-15 19:05:25,290 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:05:25,295 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:05:25,440 INFO L252 McrAutomatonBuilder]: Finished intersection with 407 states and 1181 transitions. [2022-03-15 19:05:25,440 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:05:33,602 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [32518#(or (<= ~q1_back~0 ~q1_front~0) (< ~q1_front~0 0) (<= ~n1~0 ~q1_front~0) (<= 1 (+ ~total~0 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4))))) (< (+ ~total~0 2147483648 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4)))) 0))] [2022-03-15 19:05:33,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 19:05:33,602 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:05:33,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 19:05:33,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=426, Unknown=3, NotChecked=132, Total=650 [2022-03-15 19:05:33,603 INFO L87 Difference]: Start difference. First operand 2545 states and 10777 transitions. Second operand has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:05:33,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:05:33,953 INFO L93 Difference]: Finished difference Result 3913 states and 16521 transitions. [2022-03-15 19:05:33,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 19:05:33,953 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 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 34 [2022-03-15 19:05:33,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:05:33,983 INFO L225 Difference]: With dead ends: 3913 [2022-03-15 19:05:33,983 INFO L226 Difference]: Without dead ends: 3876 [2022-03-15 19:05:33,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 400 SyntacticMatches, 9 SemanticMatches, 25 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=466, Unknown=3, NotChecked=138, Total=702 [2022-03-15 19:05:33,984 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 56 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:05:33,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 62 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 19:05:33,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3876 states. [2022-03-15 19:05:34,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3876 to 2248. [2022-03-15 19:05:34,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2248 states, 2247 states have (on average 4.214508233199822) internal successors, (9470), 2247 states have internal predecessors, (9470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:05:34,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2248 states to 2248 states and 9470 transitions. [2022-03-15 19:05:34,097 INFO L78 Accepts]: Start accepts. Automaton has 2248 states and 9470 transitions. Word has length 34 [2022-03-15 19:05:34,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:05:34,097 INFO L470 AbstractCegarLoop]: Abstraction has 2248 states and 9470 transitions. [2022-03-15 19:05:34,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:05:34,098 INFO L276 IsEmpty]: Start isEmpty. Operand 2248 states and 9470 transitions. [2022-03-15 19:05:34,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 19:05:34,105 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:05:34,105 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:05:34,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-15 19:05:34,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:05:34,327 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:05:34,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:05:34,329 INFO L85 PathProgramCache]: Analyzing trace with hash 576083283, now seen corresponding path program 4 times [2022-03-15 19:05:34,330 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:05:34,330 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176388638] [2022-03-15 19:05:34,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:05:34,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:05:34,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:05:34,398 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:05:34,398 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:05:34,398 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176388638] [2022-03-15 19:05:34,398 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176388638] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:05:34,399 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86785461] [2022-03-15 19:05:34,399 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 19:05:34,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:05:34,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:05:34,404 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:05:34,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-15 19:05:34,539 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 19:05:34,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:05:34,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-15 19:05:34,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:05:34,663 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:05:34,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:05:34,794 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:05:34,794 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86785461] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:05:34,794 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:05:34,794 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2022-03-15 19:05:34,795 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [285108151] [2022-03-15 19:05:34,795 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:05:34,801 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:05:34,979 INFO L252 McrAutomatonBuilder]: Finished intersection with 537 states and 1609 transitions. [2022-03-15 19:05:34,979 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:05:44,724 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [41144#(or (< ~q1_front~0 0) (<= ~n1~0 ~q1_front~0) (<= ~q1_back~0 (+ ~q1_front~0 1))), 41143#(or (< ~q1_front~0 0) (<= ~n1~0 (+ ~q1_front~0 1)) (<= ~q1_back~0 (+ ~q1_front~0 1))), 41085#(or (not (< ~q1_front~0 ~q1_back~0)) (not (<= 0 ~q1_front~0)) (not (< ~q1_front~0 ~n1~0)))] [2022-03-15 19:05:44,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 19:05:44,724 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:05:44,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 19:05:44,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2022-03-15 19:05:44,725 INFO L87 Difference]: Start difference. First operand 2248 states and 9470 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:05:45,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:05:45,018 INFO L93 Difference]: Finished difference Result 6824 states and 27687 transitions. [2022-03-15 19:05:45,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 19:05:45,018 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 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 34 [2022-03-15 19:05:45,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:05:45,048 INFO L225 Difference]: With dead ends: 6824 [2022-03-15 19:05:45,048 INFO L226 Difference]: Without dead ends: 6556 [2022-03-15 19:05:45,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 437 SyntacticMatches, 122 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1449 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2022-03-15 19:05:45,049 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 214 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 19:05:45,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 50 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 19:05:45,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6556 states. [2022-03-15 19:05:45,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6556 to 4800. [2022-03-15 19:05:45,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4800 states, 4799 states have (on average 4.321942071264846) internal successors, (20741), 4799 states have internal predecessors, (20741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:05:45,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4800 states to 4800 states and 20741 transitions. [2022-03-15 19:05:45,210 INFO L78 Accepts]: Start accepts. Automaton has 4800 states and 20741 transitions. Word has length 34 [2022-03-15 19:05:45,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:05:45,210 INFO L470 AbstractCegarLoop]: Abstraction has 4800 states and 20741 transitions. [2022-03-15 19:05:45,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:05:45,210 INFO L276 IsEmpty]: Start isEmpty. Operand 4800 states and 20741 transitions. [2022-03-15 19:05:45,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 19:05:45,224 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:05:45,224 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] [2022-03-15 19:05:45,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-15 19:05:45,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:05:45,439 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:05:45,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:05:45,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1075766890, now seen corresponding path program 1 times [2022-03-15 19:05:45,441 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:05:45,441 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038338109] [2022-03-15 19:05:45,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:05:45,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:05:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:05:45,508 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 19:05:45,509 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:05:45,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038338109] [2022-03-15 19:05:45,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038338109] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 19:05:45,509 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 19:05:45,509 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-15 19:05:45,510 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2006588222] [2022-03-15 19:05:45,510 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:05:45,517 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:05:45,726 INFO L252 McrAutomatonBuilder]: Finished intersection with 483 states and 1416 transitions. [2022-03-15 19:05:45,726 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:05:49,666 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 19:05:49,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 19:05:49,667 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:05:49,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 19:05:49,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-15 19:05:49,667 INFO L87 Difference]: Start difference. First operand 4800 states and 20741 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:05:49,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:05:49,775 INFO L93 Difference]: Finished difference Result 7850 states and 32036 transitions. [2022-03-15 19:05:49,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 19:05:49,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 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 34 [2022-03-15 19:05:49,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:05:49,816 INFO L225 Difference]: With dead ends: 7850 [2022-03-15 19:05:49,816 INFO L226 Difference]: Without dead ends: 7632 [2022-03-15 19:05:49,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-15 19:05:49,817 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 32 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:05:49,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 18 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:05:49,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7632 states. [2022-03-15 19:05:50,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7632 to 7046. [2022-03-15 19:05:50,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7046 states, 7045 states have (on average 4.139389638041164) internal successors, (29162), 7045 states have internal predecessors, (29162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:05:50,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7046 states to 7046 states and 29162 transitions. [2022-03-15 19:05:50,064 INFO L78 Accepts]: Start accepts. Automaton has 7046 states and 29162 transitions. Word has length 34 [2022-03-15 19:05:50,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:05:50,066 INFO L470 AbstractCegarLoop]: Abstraction has 7046 states and 29162 transitions. [2022-03-15 19:05:50,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:05:50,066 INFO L276 IsEmpty]: Start isEmpty. Operand 7046 states and 29162 transitions. [2022-03-15 19:05:50,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-15 19:05:50,089 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:05:50,089 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-15 19:05:50,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-15 19:05:50,089 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:05:50,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:05:50,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1779564829, now seen corresponding path program 5 times [2022-03-15 19:05:50,091 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:05:50,091 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981899234] [2022-03-15 19:05:50,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:05:50,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:05:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:05:50,725 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:05:50,725 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:05:50,725 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981899234] [2022-03-15 19:05:50,725 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981899234] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:05:50,726 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562197811] [2022-03-15 19:05:50,726 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 19:05:50,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:05:50,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:05:50,727 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:05:50,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-15 19:05:50,850 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 19:05:50,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:05:50,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 44 conjunts are in the unsatisfiable core [2022-03-15 19:05:50,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:05:51,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:05:51,181 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 19:05:51,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:05:51,289 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 19:05:51,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:05:51,344 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 19:05:51,444 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-15 19:05:51,554 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:05:51,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:05:51,918 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:05:51,918 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 172 treesize of output 172 [2022-03-15 19:05:51,927 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 128 [2022-03-15 19:05:51,930 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 116 [2022-03-15 19:05:51,935 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2022-03-15 19:05:52,245 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-15 19:05:52,245 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562197811] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:05:52,246 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:05:52,246 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 11] total 33 [2022-03-15 19:05:52,246 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1671151907] [2022-03-15 19:05:52,246 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:05:52,251 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:05:52,387 INFO L252 McrAutomatonBuilder]: Finished intersection with 408 states and 1182 transitions. [2022-03-15 19:05:52,388 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:06:00,725 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [79762#(or (<= ~q1_back~0 ~q1_front~0) (< ~q1_front~0 0) (<= ~n1~0 ~q1_front~0) (<= 1 (+ ~total~0 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4))))) (< (+ ~total~0 2147483648 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4)))) 0))] [2022-03-15 19:06:00,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 19:06:00,726 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:06:00,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 19:06:00,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1098, Unknown=9, NotChecked=0, Total=1260 [2022-03-15 19:06:00,726 INFO L87 Difference]: Start difference. First operand 7046 states and 29162 transitions. Second operand has 13 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:06:01,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:06:01,520 INFO L93 Difference]: Finished difference Result 11292 states and 46413 transitions. [2022-03-15 19:06:01,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-15 19:06:01,521 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 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 35 [2022-03-15 19:06:01,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:06:01,568 INFO L225 Difference]: With dead ends: 11292 [2022-03-15 19:06:01,568 INFO L226 Difference]: Without dead ends: 10917 [2022-03-15 19:06:01,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 393 SyntacticMatches, 9 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=224, Invalid=1573, Unknown=9, NotChecked=0, Total=1806 [2022-03-15 19:06:01,569 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 131 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:06:01,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 41 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 19:06:01,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10917 states. [2022-03-15 19:06:01,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10917 to 7555. [2022-03-15 19:06:01,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7555 states, 7554 states have (on average 4.119671697114112) internal successors, (31120), 7554 states have internal predecessors, (31120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:06:01,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7555 states to 7555 states and 31120 transitions. [2022-03-15 19:06:01,849 INFO L78 Accepts]: Start accepts. Automaton has 7555 states and 31120 transitions. Word has length 35 [2022-03-15 19:06:01,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:06:01,850 INFO L470 AbstractCegarLoop]: Abstraction has 7555 states and 31120 transitions. [2022-03-15 19:06:01,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:06:01,850 INFO L276 IsEmpty]: Start isEmpty. Operand 7555 states and 31120 transitions. [2022-03-15 19:06:01,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-15 19:06:01,871 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:06:01,871 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] [2022-03-15 19:06:01,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-15 19:06:02,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:06:02,091 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:06:02,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:06:02,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1954358287, now seen corresponding path program 1 times [2022-03-15 19:06:02,093 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:06:02,094 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901472363] [2022-03-15 19:06:02,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:06:02,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:06:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:06:02,182 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 19:06:02,182 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:06:02,182 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901472363] [2022-03-15 19:06:02,182 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901472363] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:06:02,182 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206196988] [2022-03-15 19:06:02,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:06:02,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:06:02,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:06:02,188 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:06:02,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-15 19:06:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:06:02,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-15 19:06:02,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:06:02,373 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 19:06:02,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 19:06:02,373 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206196988] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 19:06:02,373 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 19:06:02,373 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-03-15 19:06:02,374 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [106314852] [2022-03-15 19:06:02,374 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:06:02,380 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:06:02,532 INFO L252 McrAutomatonBuilder]: Finished intersection with 484 states and 1417 transitions. [2022-03-15 19:06:02,532 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:06:06,838 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [106286#(or (< ~q2_front~0 0) (<= ~q2_back~0 ~q2_front~0))] [2022-03-15 19:06:06,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 19:06:06,838 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:06:06,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 19:06:06,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-03-15 19:06:06,839 INFO L87 Difference]: Start difference. First operand 7555 states and 31120 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:06:06,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:06:06,937 INFO L93 Difference]: Finished difference Result 9553 states and 38791 transitions. [2022-03-15 19:06:06,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 19:06:06,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 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 35 [2022-03-15 19:06:06,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:06:06,966 INFO L225 Difference]: With dead ends: 9553 [2022-03-15 19:06:06,966 INFO L226 Difference]: Without dead ends: 9465 [2022-03-15 19:06:06,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 477 SyntacticMatches, 5 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-03-15 19:06:06,967 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 21 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:06:06,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 11 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:06:06,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9465 states. [2022-03-15 19:06:07,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9465 to 8187. [2022-03-15 19:06:07,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8187 states, 8186 states have (on average 4.186782311263133) internal successors, (34273), 8186 states have internal predecessors, (34273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:06:07,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8187 states to 8187 states and 34273 transitions. [2022-03-15 19:06:07,210 INFO L78 Accepts]: Start accepts. Automaton has 8187 states and 34273 transitions. Word has length 35 [2022-03-15 19:06:07,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:06:07,210 INFO L470 AbstractCegarLoop]: Abstraction has 8187 states and 34273 transitions. [2022-03-15 19:06:07,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:06:07,210 INFO L276 IsEmpty]: Start isEmpty. Operand 8187 states and 34273 transitions. [2022-03-15 19:06:07,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 19:06:07,232 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:06:07,232 INFO L514 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:06:07,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-15 19:06:07,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:06:07,448 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:06:07,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:06:07,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1291738293, now seen corresponding path program 6 times [2022-03-15 19:06:07,449 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:06:07,449 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712511671] [2022-03-15 19:06:07,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:06:07,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:06:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:06:08,798 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:06:08,798 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:06:08,798 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712511671] [2022-03-15 19:06:08,798 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712511671] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:06:08,798 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404748164] [2022-03-15 19:06:08,799 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 19:06:08,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:06:08,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:06:08,801 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:06:08,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-15 19:06:09,009 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 19:06:09,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:06:09,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-15 19:06:09,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:06:09,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:06:09,253 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 19:06:09,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:06:09,296 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 19:06:09,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:06:09,336 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 19:06:09,368 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-15 19:06:09,405 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-15 19:06:09,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:06:09,471 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_667 (Array Int Int))) (<= 1 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_667) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) c_~total~0))) is different from false [2022-03-15 19:06:09,478 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_667 (Array Int Int)) (v_ArrVal_666 (Array Int Int))) (<= 1 (+ c_~total~0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_666) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_667) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset))))) is different from false [2022-03-15 19:06:09,486 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_667 (Array Int Int)) (v_ArrVal_666 (Array Int Int)) (v_ArrVal_665 (Array Int Int))) (<= 1 (+ (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_665) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_666) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_667) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) c_~total~0))) is different from false [2022-03-15 19:06:09,509 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:06:09,509 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1362 treesize of output 1306 [2022-03-15 19:06:09,518 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1286 treesize of output 1190 [2022-03-15 19:06:09,528 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1190 treesize of output 998 [2022-03-15 19:06:09,545 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 523 treesize of output 475 [2022-03-15 19:06:11,906 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 1 not checked. [2022-03-15 19:06:11,906 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404748164] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:06:11,906 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:06:11,907 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 28 [2022-03-15 19:06:11,908 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1457858706] [2022-03-15 19:06:11,908 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:06:11,916 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:06:12,073 INFO L252 McrAutomatonBuilder]: Finished intersection with 409 states and 1183 transitions. [2022-03-15 19:06:12,074 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:06:27,980 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 10 new interpolants: [132459#(and (or (not (< ~q1_front~0 ~q1_back~0)) (= ~j~0 0) (not (<= 0 (+ ~total~0 2147483648 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4)))))) (< (+ ~q1_front~0 1) ~q1_back~0) (not (<= 0 ~q1_front~0)) (not (<= (+ ~total~0 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4)))) 2147483647)) (= (mod |thread3Thread1of1ForFork1_~cond~2#1| 256) 0) (not (< ~q1_front~0 ~n1~0))) (or (<= ~q1_back~0 ~q1_front~0) (< ~q1_front~0 0) (<= ~n1~0 ~q1_front~0) (< (+ ~q1_front~0 1) ~q1_back~0) (<= 1 (+ ~total~0 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4))))) (< (+ ~total~0 2147483648 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4)))) 0) (= (mod |thread3Thread1of1ForFork1_~cond~2#1| 256) 0))), 132463#(and (or (<= ~q1_back~0 ~q1_front~0) (< ~q1_front~0 0) (<= ~n1~0 ~q1_front~0) (< (+ ~q1_front~0 1) ~q1_back~0) (<= 1 (+ ~total~0 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4))))) (< (+ ~total~0 2147483648 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4)))) 0)) (or (not (< ~q1_front~0 ~q1_back~0)) (= ~j~0 0) (not (<= 0 (+ ~total~0 2147483648 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4)))))) (not (<= 0 ~q1_front~0)) (not (<= (+ ~total~0 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4)))) 2147483647)) (not (< ~q1_front~0 ~n1~0)))), 132457#(and (or (= ~j~0 0) (not (= (mod |thread3Thread1of1ForFork1_~cond~2#1| 256) 0))) (or (not (= (mod |thread3Thread1of1ForFork1_~cond~2#1| 256) 0)) (<= (+ ~j~0 1) ~total~0))), 132462#(and (or (<= ~q1_back~0 ~q1_front~0) (< ~q1_front~0 0) (<= ~n1~0 ~q1_front~0) (< (+ ~q1_front~0 1) ~q1_back~0) (<= 1 (+ ~total~0 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4))))) (< (+ ~total~0 2147483648 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4)))) 0)) (or (not (< ~q1_front~0 ~q1_back~0)) (= ~j~0 0) (not (<= 0 (+ ~total~0 2147483648 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4)))))) (< (+ ~q1_front~0 1) ~q1_back~0) (not (<= 0 ~q1_front~0)) (not (<= (+ ~total~0 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4)))) 2147483647)) (not (< ~q1_front~0 ~n1~0)))), 132461#(or (<= ~q1_back~0 ~q1_front~0) (< ~q1_front~0 0) (<= ~n1~0 ~q1_front~0) (< (+ ~q1_front~0 1) ~q1_back~0) (<= 1 (+ ~total~0 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4))))) (< (+ ~total~0 2147483648 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4)))) 0)), 132456#(or (not (< ~q1_front~0 ~q1_back~0)) (< (+ ~q1_front~0 1) ~q1_back~0) (<= 1 (+ ~total~0 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4))))) (< (+ ~total~0 2147483648 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4)))) 0) (not (<= 0 ~q1_front~0)) (= (mod |thread3Thread1of1ForFork1_~cond~2#1| 256) 0) (not (< ~q1_front~0 ~n1~0))), 132458#(and (or (<= 1 ~total~0) (< ~q1_front~0 ~q1_back~0)) (or (= ~j~0 0) (< ~q1_front~0 ~q1_back~0))), 132460#(and (or (not (< ~q1_front~0 ~q1_back~0)) (= ~j~0 0) (not (<= 0 (+ ~total~0 2147483648 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4)))))) (not (<= 0 ~q1_front~0)) (not (<= (+ ~total~0 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4)))) 2147483647)) (= (mod |thread3Thread1of1ForFork1_~cond~2#1| 256) 0) (not (< ~q1_front~0 ~n1~0))) (or (<= ~q1_back~0 ~q1_front~0) (< ~q1_front~0 0) (<= ~n1~0 ~q1_front~0) (< (+ ~q1_front~0 1) ~q1_back~0) (<= 1 (+ ~total~0 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4))))) (< (+ ~total~0 2147483648 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4)))) 0) (= (mod |thread3Thread1of1ForFork1_~cond~2#1| 256) 0))), 132454#(or (<= 1 ~total~0) (not (= (mod |thread3Thread1of1ForFork1_~cond~2#1| 256) 0))), 132455#(or (<= 1 ~total~0) (< ~q1_front~0 ~q1_back~0))] [2022-03-15 19:06:27,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-15 19:06:27,980 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:06:27,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-15 19:06:27,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1161, Unknown=3, NotChecked=216, Total=1560 [2022-03-15 19:06:27,981 INFO L87 Difference]: Start difference. First operand 8187 states and 34273 transitions. Second operand has 26 states, 25 states have (on average 5.8) internal successors, (145), 25 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:06:29,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:06:29,996 INFO L93 Difference]: Finished difference Result 18315 states and 75463 transitions. [2022-03-15 19:06:29,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-15 19:06:29,997 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 5.8) internal successors, (145), 25 states have internal predecessors, (145), 0 states have call successors, (0), 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 36 [2022-03-15 19:06:29,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:06:30,052 INFO L225 Difference]: With dead ends: 18315 [2022-03-15 19:06:30,052 INFO L226 Difference]: Without dead ends: 17656 [2022-03-15 19:06:30,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 352 SyntacticMatches, 52 SemanticMatches, 53 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=342, Invalid=2319, Unknown=3, NotChecked=306, Total=2970 [2022-03-15 19:06:30,053 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 277 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 1731 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 1795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:06:30,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 23 Invalid, 1795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1731 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 19:06:30,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17656 states. [2022-03-15 19:06:30,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17656 to 8488. [2022-03-15 19:06:30,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8488 states, 8487 states have (on average 4.205844232355367) internal successors, (35695), 8487 states have internal predecessors, (35695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:06:30,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8488 states to 8488 states and 35695 transitions. [2022-03-15 19:06:30,451 INFO L78 Accepts]: Start accepts. Automaton has 8488 states and 35695 transitions. Word has length 36 [2022-03-15 19:06:30,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:06:30,451 INFO L470 AbstractCegarLoop]: Abstraction has 8488 states and 35695 transitions. [2022-03-15 19:06:30,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 5.8) internal successors, (145), 25 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:06:30,451 INFO L276 IsEmpty]: Start isEmpty. Operand 8488 states and 35695 transitions. [2022-03-15 19:06:30,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 19:06:30,474 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:06:30,474 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:06:30,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-15 19:06:30,698 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,SelfDestructingSolverStorable10 [2022-03-15 19:06:30,698 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:06:30,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:06:30,699 INFO L85 PathProgramCache]: Analyzing trace with hash -806670060, now seen corresponding path program 7 times [2022-03-15 19:06:30,700 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:06:30,700 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474690678] [2022-03-15 19:06:30,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:06:30,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:06:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:06:30,770 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 19:06:30,771 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:06:30,771 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474690678] [2022-03-15 19:06:30,771 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474690678] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:06:30,771 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095637857] [2022-03-15 19:06:30,771 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 19:06:30,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:06:30,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:06:30,772 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:06:30,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-15 19:06:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:06:30,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 19:06:30,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:06:31,016 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 19:06:31,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:06:31,088 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 19:06:31,088 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095637857] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:06:31,089 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:06:31,089 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-03-15 19:06:31,089 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1385540558] [2022-03-15 19:06:31,089 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:06:31,094 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:06:31,254 INFO L252 McrAutomatonBuilder]: Finished intersection with 475 states and 1376 transitions. [2022-03-15 19:06:31,254 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:06:37,303 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [168007#(or (<= ~n1~0 ~q1_back~0) (< ~q1_back~0 0)), 168008#(or (<= ~n1~0 ~q1_back~0) (<= ~q1_back~0 0)), 168006#(or (<= ~n1~0 0) (<= ~q1_back~0 0))] [2022-03-15 19:06:37,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-15 19:06:37,303 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:06:37,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-15 19:06:37,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-03-15 19:06:37,304 INFO L87 Difference]: Start difference. First operand 8488 states and 35695 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:06:37,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:06:37,503 INFO L93 Difference]: Finished difference Result 8224 states and 33065 transitions. [2022-03-15 19:06:37,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 19:06:37,504 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 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 36 [2022-03-15 19:06:37,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:06:37,546 INFO L225 Difference]: With dead ends: 8224 [2022-03-15 19:06:37,546 INFO L226 Difference]: Without dead ends: 7759 [2022-03-15 19:06:37,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 500 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-03-15 19:06:37,546 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 77 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:06:37,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 45 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:06:37,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7759 states. [2022-03-15 19:06:37,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7759 to 7255. [2022-03-15 19:06:37,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7255 states, 7254 states have (on average 4.10366694237662) internal successors, (29768), 7254 states have internal predecessors, (29768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:06:37,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7255 states to 7255 states and 29768 transitions. [2022-03-15 19:06:37,726 INFO L78 Accepts]: Start accepts. Automaton has 7255 states and 29768 transitions. Word has length 36 [2022-03-15 19:06:37,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:06:37,726 INFO L470 AbstractCegarLoop]: Abstraction has 7255 states and 29768 transitions. [2022-03-15 19:06:37,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:06:37,726 INFO L276 IsEmpty]: Start isEmpty. Operand 7255 states and 29768 transitions. [2022-03-15 19:06:37,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-15 19:06:37,745 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:06:37,745 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:06:37,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-15 19:06:37,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:06:37,972 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:06:37,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:06:37,973 INFO L85 PathProgramCache]: Analyzing trace with hash -2012854563, now seen corresponding path program 8 times [2022-03-15 19:06:37,973 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:06:37,974 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036265306] [2022-03-15 19:06:37,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:06:37,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:06:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:06:38,883 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:06:38,883 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:06:38,886 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036265306] [2022-03-15 19:06:38,886 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036265306] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:06:38,886 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37730869] [2022-03-15 19:06:38,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 19:06:38,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:06:38,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:06:38,891 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:06:38,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-15 19:06:39,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:06:39,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:06:39,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 50 conjunts are in the unsatisfiable core [2022-03-15 19:06:39,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:06:39,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:06:39,418 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-03-15 19:06:39,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:06:39,483 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-03-15 19:06:39,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:06:39,536 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-03-15 19:06:39,617 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2022-03-15 19:06:39,798 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:06:39,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:06:40,287 INFO L353 Elim1Store]: treesize reduction 12, result has 25.0 percent of original size [2022-03-15 19:06:40,288 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 342 treesize of output 322 [2022-03-15 19:06:40,292 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 314 treesize of output 266 [2022-03-15 19:06:40,296 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 266 treesize of output 242 [2022-03-15 19:06:40,301 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 114 [2022-03-15 19:06:40,730 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-15 19:06:40,730 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37730869] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:06:40,730 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:06:40,730 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 11] total 37 [2022-03-15 19:06:40,730 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1038990914] [2022-03-15 19:06:40,730 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:06:40,737 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:06:40,888 INFO L252 McrAutomatonBuilder]: Finished intersection with 410 states and 1184 transitions. [2022-03-15 19:06:40,888 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:06:48,880 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [191000#(or (<= ~q1_back~0 ~q1_front~0) (< ~q1_front~0 0) (<= ~n1~0 ~q1_front~0) (<= 1 (+ ~total~0 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4))))) (< (+ ~total~0 2147483648 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4)))) 0))] [2022-03-15 19:06:48,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 19:06:48,881 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:06:48,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 19:06:48,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1379, Unknown=8, NotChecked=0, Total=1560 [2022-03-15 19:06:48,882 INFO L87 Difference]: Start difference. First operand 7255 states and 29768 transitions. Second operand has 15 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:06:49,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:06:49,397 INFO L93 Difference]: Finished difference Result 8660 states and 34680 transitions. [2022-03-15 19:06:49,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 19:06:49,398 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 0 states have call successors, (0), 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 37 [2022-03-15 19:06:49,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:06:49,418 INFO L225 Difference]: With dead ends: 8660 [2022-03-15 19:06:49,418 INFO L226 Difference]: Without dead ends: 8357 [2022-03-15 19:06:49,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 402 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=193, Invalid=1521, Unknown=8, NotChecked=0, Total=1722 [2022-03-15 19:06:49,419 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 53 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:06:49,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 54 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 19:06:49,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8357 states. [2022-03-15 19:06:49,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8357 to 6990. [2022-03-15 19:06:49,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6990 states, 6989 states have (on average 4.119473458291601) internal successors, (28791), 6989 states have internal predecessors, (28791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:06:49,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6990 states to 6990 states and 28791 transitions. [2022-03-15 19:06:49,600 INFO L78 Accepts]: Start accepts. Automaton has 6990 states and 28791 transitions. Word has length 37 [2022-03-15 19:06:49,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:06:49,600 INFO L470 AbstractCegarLoop]: Abstraction has 6990 states and 28791 transitions. [2022-03-15 19:06:49,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:06:49,600 INFO L276 IsEmpty]: Start isEmpty. Operand 6990 states and 28791 transitions. [2022-03-15 19:06:49,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-15 19:06:49,620 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:06:49,620 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:06:49,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-15 19:06:49,836 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,SelfDestructingSolverStorable12 [2022-03-15 19:06:49,837 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:06:49,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:06:49,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1655631456, now seen corresponding path program 9 times [2022-03-15 19:06:49,838 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:06:49,838 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908405505] [2022-03-15 19:06:49,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:06:49,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:06:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:06:50,450 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:06:50,450 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:06:50,451 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908405505] [2022-03-15 19:06:50,451 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908405505] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:06:50,451 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560467436] [2022-03-15 19:06:50,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 19:06:50,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:06:50,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:06:50,452 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:06:50,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-15 19:06:50,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 19:06:50,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:06:50,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 53 conjunts are in the unsatisfiable core [2022-03-15 19:06:50,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:06:51,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:06:51,031 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2022-03-15 19:06:51,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:06:51,101 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2022-03-15 19:06:51,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:06:51,170 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2022-03-15 19:06:51,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:06:51,331 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:06:51,331 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 12 [2022-03-15 19:06:51,359 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:06:51,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:06:51,786 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-03-15 19:06:51,787 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 487 treesize of output 488 [2022-03-15 19:06:51,794 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-03-15 19:06:51,794 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 428 treesize of output 324 [2022-03-15 19:06:51,800 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-15 19:06:51,800 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 136 [2022-03-15 19:06:51,807 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-03-15 19:06:51,807 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 298 treesize of output 246 [2022-03-15 19:06:52,470 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:06:52,470 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560467436] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:06:52,470 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:06:52,470 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 33 [2022-03-15 19:06:52,470 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1091897497] [2022-03-15 19:06:52,470 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:06:52,479 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:06:52,666 INFO L252 McrAutomatonBuilder]: Finished intersection with 540 states and 1612 transitions. [2022-03-15 19:06:52,666 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:07:09,668 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [213897#(or (< 2147483647 (+ ~total~0 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4))))) (< ~q1_front~0 0) (<= 2 (+ ~total~0 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4) 4)) (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4))))) (<= ~n1~0 (+ ~q1_front~0 1)) (< (+ ~total~0 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4) 4)) 2147483648 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4)))) 0) (<= ~q1_back~0 (+ ~q1_front~0 1)) (< (+ ~total~0 2147483648 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4)))) 0)), 213898#(or (< 2147483647 (+ ~total~0 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4))))) (<= ~q1_back~0 ~q1_front~0) (< ~q1_front~0 0) (<= 2 (+ ~total~0 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4) 4)) (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4))))) (<= ~n1~0 (+ ~q1_front~0 1)) (< (+ ~total~0 2147483648 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4)))) 0)), 213896#(or (<= ~q1_back~0 ~q1_front~0) (< ~q1_front~0 0) (<= 2 (+ ~total~0 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4))))) (<= ~n1~0 ~q1_front~0) (< (+ ~total~0 2147483648 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4)))) 0))] [2022-03-15 19:07:09,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 19:07:09,668 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:07:09,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 19:07:09,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1223, Unknown=10, NotChecked=0, Total=1406 [2022-03-15 19:07:09,669 INFO L87 Difference]: Start difference. First operand 6990 states and 28791 transitions. Second operand has 15 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:07:10,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:07:10,999 INFO L93 Difference]: Finished difference Result 15243 states and 62196 transitions. [2022-03-15 19:07:10,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-15 19:07:10,999 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 0 states have call successors, (0), 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 37 [2022-03-15 19:07:10,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:07:11,039 INFO L225 Difference]: With dead ends: 15243 [2022-03-15 19:07:11,040 INFO L226 Difference]: Without dead ends: 14862 [2022-03-15 19:07:11,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 523 SyntacticMatches, 11 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=260, Invalid=1892, Unknown=10, NotChecked=0, Total=2162 [2022-03-15 19:07:11,041 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 247 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 19:07:11,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 111 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 19:07:11,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14862 states. [2022-03-15 19:07:11,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14862 to 9669. [2022-03-15 19:07:11,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9669 states, 9668 states have (on average 4.19011170872983) internal successors, (40510), 9668 states have internal predecessors, (40510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:07:11,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9669 states to 9669 states and 40510 transitions. [2022-03-15 19:07:11,299 INFO L78 Accepts]: Start accepts. Automaton has 9669 states and 40510 transitions. Word has length 37 [2022-03-15 19:07:11,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:07:11,299 INFO L470 AbstractCegarLoop]: Abstraction has 9669 states and 40510 transitions. [2022-03-15 19:07:11,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:07:11,299 INFO L276 IsEmpty]: Start isEmpty. Operand 9669 states and 40510 transitions. [2022-03-15 19:07:11,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-15 19:07:11,322 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:07:11,323 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:07:11,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-15 19:07:11,546 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,SelfDestructingSolverStorable13 [2022-03-15 19:07:11,547 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:07:11,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:07:11,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1359278626, now seen corresponding path program 10 times [2022-03-15 19:07:11,549 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:07:11,549 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846686133] [2022-03-15 19:07:11,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:07:11,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:07:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:07:12,135 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:07:12,135 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:07:12,135 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846686133] [2022-03-15 19:07:12,135 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846686133] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:07:12,136 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953580657] [2022-03-15 19:07:12,136 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 19:07:12,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:07:12,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:07:12,137 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:07:12,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-15 19:07:12,279 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 19:07:12,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:07:12,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-15 19:07:12,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:07:12,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:07:12,729 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2022-03-15 19:07:12,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:07:12,799 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2022-03-15 19:07:12,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:07:12,946 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 39 [2022-03-15 19:07:13,086 INFO L353 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2022-03-15 19:07:13,086 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 15 [2022-03-15 19:07:13,118 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:07:13,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:07:13,625 INFO L353 Elim1Store]: treesize reduction 61, result has 39.0 percent of original size [2022-03-15 19:07:13,626 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1855 treesize of output 1684 [2022-03-15 19:07:13,640 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-03-15 19:07:13,641 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1638 treesize of output 1350 [2022-03-15 19:07:13,655 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-03-15 19:07:13,655 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1350 treesize of output 1206 [2022-03-15 19:07:13,665 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1206 treesize of output 1014 [2022-03-15 19:07:14,650 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:07:14,650 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953580657] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:07:14,650 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:07:14,650 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 34 [2022-03-15 19:07:14,650 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2018902779] [2022-03-15 19:07:14,651 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:07:14,658 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:07:14,853 INFO L252 McrAutomatonBuilder]: Finished intersection with 399 states and 1146 transitions. [2022-03-15 19:07:14,854 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:07:22,951 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [248750#(or (<= ~q1_back~0 ~q1_front~0) (< ~q1_front~0 0) (<= 2 (+ ~total~0 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4))))) (<= ~n1~0 ~q1_front~0) (< (+ ~total~0 2147483648 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4)))) 0))] [2022-03-15 19:07:22,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 19:07:22,951 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:07:22,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 19:07:22,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1165, Unknown=4, NotChecked=0, Total=1332 [2022-03-15 19:07:22,952 INFO L87 Difference]: Start difference. First operand 9669 states and 40510 transitions. Second operand has 14 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:07:24,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:07:24,128 INFO L93 Difference]: Finished difference Result 13774 states and 55082 transitions. [2022-03-15 19:07:24,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-15 19:07:24,129 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 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 37 [2022-03-15 19:07:24,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:07:24,163 INFO L225 Difference]: With dead ends: 13774 [2022-03-15 19:07:24,163 INFO L226 Difference]: Without dead ends: 12323 [2022-03-15 19:07:24,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 381 SyntacticMatches, 16 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=291, Invalid=1685, Unknown=4, NotChecked=0, Total=1980 [2022-03-15 19:07:24,164 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 198 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 19:07:24,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 111 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 19:07:24,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12323 states. [2022-03-15 19:07:24,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12323 to 10283. [2022-03-15 19:07:24,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10283 states, 10282 states have (on average 4.173798871814822) internal successors, (42915), 10282 states have internal predecessors, (42915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:07:24,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10283 states to 10283 states and 42915 transitions. [2022-03-15 19:07:24,459 INFO L78 Accepts]: Start accepts. Automaton has 10283 states and 42915 transitions. Word has length 37 [2022-03-15 19:07:24,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:07:24,460 INFO L470 AbstractCegarLoop]: Abstraction has 10283 states and 42915 transitions. [2022-03-15 19:07:24,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:07:24,460 INFO L276 IsEmpty]: Start isEmpty. Operand 10283 states and 42915 transitions. [2022-03-15 19:07:24,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-15 19:07:24,479 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:07:24,479 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:07:24,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-15 19:07:24,680 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,SelfDestructingSolverStorable14 [2022-03-15 19:07:24,680 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:07:24,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:07:24,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1527786330, now seen corresponding path program 11 times [2022-03-15 19:07:24,683 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:07:24,683 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229612315] [2022-03-15 19:07:24,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:07:24,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:07:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:07:25,396 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:07:25,397 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:07:25,397 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229612315] [2022-03-15 19:07:25,397 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229612315] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:07:25,397 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430705591] [2022-03-15 19:07:25,397 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 19:07:25,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:07:25,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:07:25,400 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:07:25,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-15 19:07:25,572 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 19:07:25,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:07:25,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 59 conjunts are in the unsatisfiable core [2022-03-15 19:07:25,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:07:25,672 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-03-15 19:07:25,762 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 19:07:25,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:07:25,973 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 19:07:26,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:07:26,066 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 19:07:26,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:07:26,148 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 19:07:26,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:07:26,371 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:07:26,371 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 12 [2022-03-15 19:07:26,399 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:07:26,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:07:27,173 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:07:27,173 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 134 treesize of output 98 [2022-03-15 19:07:27,183 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-03-15 19:07:27,184 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 6328 treesize of output 6112 [2022-03-15 19:07:27,204 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-15 19:07:27,205 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 6091 treesize of output 5771 [2022-03-15 19:07:27,226 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-15 19:07:27,227 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 5771 treesize of output 4491 [2022-03-15 19:07:27,247 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-15 19:07:27,248 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 4491 treesize of output 3851 [2022-03-15 19:07:27,275 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-03-15 19:07:27,276 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2020 treesize of output 1854 [2022-03-15 19:13:53,518 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:13:53,518 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430705591] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:13:53,518 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:13:53,518 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 35 [2022-03-15 19:13:53,518 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1464095889] [2022-03-15 19:13:53,518 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:13:53,526 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:13:53,708 INFO L252 McrAutomatonBuilder]: Finished intersection with 476 states and 1377 transitions. [2022-03-15 19:13:53,708 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:14:07,056 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [283360#(or (<= ~q1_back~0 ~q1_front~0) (< ~q1_front~0 0) (<= 2 (+ ~total~0 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4))))) (<= ~n1~0 ~q1_front~0) (< (+ ~total~0 2147483648 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4)))) 0)), 283364#(or (< 2147483647 (+ ~total~0 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4))))) (not (= (select (select |#memory_int| ~q1~0.base) (+ (* ~q1_back~0 4) ~q1~0.offset)) ~C~0)) (<= ~q1_back~0 ~q1_front~0) (< ~q1_front~0 0) (<= 2 (+ ~total~0 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4) 4)) (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4))))) (<= ~n1~0 ~q1_back~0) (< (+ ~total~0 2147483648 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4)))) 0)), 283363#(or (< 2147483647 (+ ~total~0 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4))))) (not (= (select (select |#memory_int| ~q1~0.base) (+ (* ~q1_back~0 4) ~q1~0.offset)) ~C~0)) (<= ~q1_back~0 ~q1_front~0) (< ~q1_front~0 0) (<= 2 (+ ~total~0 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4) 4)) (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4))))) (<= ~n1~0 ~q1_back~0) (< (+ ~total~0 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4) 4)) 2147483648 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4)))) 0) (< (+ ~total~0 2147483648 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4)))) 0)), 283362#(or (not (= (select (select |#memory_int| ~q1~0.base) (+ (* ~q1_back~0 4) ~q1~0.offset)) ~C~0)) (<= 2 (+ ~total~0 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4))))) (<= ~n1~0 ~q1_back~0) (< ~q1_back~0 0)), 283361#(or (not (= (select (select |#memory_int| ~q1~0.base) (+ (* ~q1_back~0 4) ~q1~0.offset)) ~C~0)) (<= (+ ~q1_back~0 1) ~q1_front~0) (< ~q1_front~0 0) (<= 2 (+ ~total~0 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4))))) (<= ~n1~0 ~q1_back~0) (< (+ ~total~0 2147483648 (select (select |#memory_int| ~q1~0.base) (+ ~q1~0.offset (* ~q1_front~0 4)))) 0))] [2022-03-15 19:14:07,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 19:14:07,056 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:14:07,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 19:14:07,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1465, Unknown=25, NotChecked=0, Total=1722 [2022-03-15 19:14:07,057 INFO L87 Difference]: Start difference. First operand 10283 states and 42915 transitions. Second operand has 17 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:14:09,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:14:09,829 INFO L93 Difference]: Finished difference Result 48823 states and 209962 transitions. [2022-03-15 19:14:09,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-15 19:14:09,829 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-03-15 19:14:09,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:14:10,209 INFO L225 Difference]: With dead ends: 48823 [2022-03-15 19:14:10,210 INFO L226 Difference]: Without dead ends: 46551 [2022-03-15 19:14:10,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 468 SyntacticMatches, 5 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=522, Invalid=2645, Unknown=25, NotChecked=0, Total=3192 [2022-03-15 19:14:10,211 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 511 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 1496 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 1575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 19:14:10,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [511 Valid, 63 Invalid, 1575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1496 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 19:14:10,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46551 states. [2022-03-15 19:14:11,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46551 to 21784. [2022-03-15 19:14:11,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21784 states, 21783 states have (on average 4.733966854886838) internal successors, (103120), 21783 states have internal predecessors, (103120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:14:11,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21784 states to 21784 states and 103120 transitions. [2022-03-15 19:14:11,480 INFO L78 Accepts]: Start accepts. Automaton has 21784 states and 103120 transitions. Word has length 37 [2022-03-15 19:14:11,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:14:11,481 INFO L470 AbstractCegarLoop]: Abstraction has 21784 states and 103120 transitions. [2022-03-15 19:14:11,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:14:11,481 INFO L276 IsEmpty]: Start isEmpty. Operand 21784 states and 103120 transitions. [2022-03-15 19:14:11,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-15 19:14:11,606 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:14:11,606 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:14:11,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-15 19:14:11,807 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,SelfDestructingSolverStorable15 [2022-03-15 19:14:11,807 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:14:11,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:14:11,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1620609382, now seen corresponding path program 12 times [2022-03-15 19:14:11,810 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:14:11,810 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286633717] [2022-03-15 19:14:11,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:14:11,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:14:11,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:14:12,626 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:14:12,627 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:14:12,627 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286633717] [2022-03-15 19:14:12,627 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286633717] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:14:12,627 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283501748] [2022-03-15 19:14:12,627 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 19:14:12,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:14:12,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:14:12,628 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:14:12,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-15 19:14:12,805 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 19:14:12,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:14:12,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 55 conjunts are in the unsatisfiable core [2022-03-15 19:14:12,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:14:12,818 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2022-03-15 19:14:12,896 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-15 19:14:12,979 INFO L387 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 6 treesize of output 5 [2022-03-15 19:14:13,105 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 19:14:13,165 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 19:14:13,362 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 40 [2022-03-15 19:14:13,490 INFO L353 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2022-03-15 19:14:13,491 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 15 [2022-03-15 19:14:13,529 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:14:13,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:14:13,609 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1112 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1112) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) c_~total~0))) is different from false [2022-03-15 19:14:14,382 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:14:14,382 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 91 [2022-03-15 19:14:14,419 INFO L353 Elim1Store]: treesize reduction 47, result has 7.8 percent of original size [2022-03-15 19:14:14,421 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 120636 treesize of output 114216 [2022-03-15 19:14:15,158 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-15 19:14:15,159 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-15 19:14:15,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:14:15,162 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 114191 treesize of output 104439 [2022-03-15 19:14:15,454 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-15 19:14:15,455 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-15 19:14:15,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:14:15,459 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 104439 treesize of output 84935 [2022-03-15 19:14:15,740 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84726 treesize of output 70390 [2022-03-15 19:14:15,992 INFO L353 Elim1Store]: treesize reduction 47, result has 7.8 percent of original size [2022-03-15 19:14:15,993 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 70513 treesize of output 65635 [2022-03-15 19:14:16,725 INFO L884 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. Received shutdown request... [2022-03-15 19:17:08,548 WARN L244 SmtUtils]: Removed 2 from assertion stack [2022-03-15 19:17:08,551 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-03-15 19:17:08,560 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-15 19:17:08,560 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-15 19:17:08,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-15 19:17:08,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:17:08,752 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 38 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 24ms.. [2022-03-15 19:17:08,753 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 5 remaining) [2022-03-15 19:17:08,753 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 5 remaining) [2022-03-15 19:17:08,753 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 5 remaining) [2022-03-15 19:17:08,753 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION (0 of 5 remaining) [2022-03-15 19:17:08,754 INFO L732 BasicCegarLoop]: Path program histogram: [12, 1, 1, 1, 1, 1] [2022-03-15 19:17:08,756 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 19:17:08,756 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 19:17:08,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 07:17:08 BasicIcfg [2022-03-15 19:17:08,758 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 19:17:08,758 INFO L158 Benchmark]: Toolchain (without parser) took 754474.15ms. Allocated memory was 183.5MB in the beginning and 2.5GB in the end (delta: 2.3GB). Free memory was 132.1MB in the beginning and 1.1GB in the end (delta: -953.5MB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. [2022-03-15 19:17:08,758 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 183.5MB. Free memory is still 148.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 19:17:08,758 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.30ms. Allocated memory was 183.5MB in the beginning and 227.5MB in the end (delta: 44.0MB). Free memory was 131.9MB in the beginning and 202.5MB in the end (delta: -70.6MB). Peak memory consumption was 10.7MB. Max. memory is 8.0GB. [2022-03-15 19:17:08,758 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.88ms. Allocated memory is still 227.5MB. Free memory was 202.5MB in the beginning and 199.4MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-15 19:17:08,758 INFO L158 Benchmark]: Boogie Preprocessor took 38.83ms. Allocated memory is still 227.5MB. Free memory was 199.4MB in the beginning and 197.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 19:17:08,759 INFO L158 Benchmark]: RCFGBuilder took 755.88ms. Allocated memory is still 227.5MB. Free memory was 197.3MB in the beginning and 158.5MB in the end (delta: 38.8MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. [2022-03-15 19:17:08,759 INFO L158 Benchmark]: TraceAbstraction took 753336.63ms. Allocated memory was 227.5MB in the beginning and 2.5GB in the end (delta: 2.3GB). Free memory was 158.0MB in the beginning and 1.1GB in the end (delta: -927.7MB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2022-03-15 19:17:08,760 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 183.5MB. Free memory is still 148.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 283.30ms. Allocated memory was 183.5MB in the beginning and 227.5MB in the end (delta: 44.0MB). Free memory was 131.9MB in the beginning and 202.5MB in the end (delta: -70.6MB). Peak memory consumption was 10.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 48.88ms. Allocated memory is still 227.5MB. Free memory was 202.5MB in the beginning and 199.4MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.83ms. Allocated memory is still 227.5MB. Free memory was 199.4MB in the beginning and 197.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 755.88ms. Allocated memory is still 227.5MB. Free memory was 197.3MB in the beginning and 158.5MB in the end (delta: 38.8MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. * TraceAbstraction took 753336.63ms. Allocated memory was 227.5MB in the beginning and 2.5GB in the end (delta: 2.3GB). Free memory was 158.0MB in the beginning and 1.1GB in the end (delta: -927.7MB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.5s, 241 PlacesBefore, 49 PlacesAfterwards, 247 TransitionsBefore, 42 TransitionsAfterwards, 2000 CoEnabledTransitionPairs, 8 FixpointIterations, 165 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 33 TrivialYvCompositions, 8 ConcurrentYvCompositions, 13 ChoiceCompositions, 246 TotalNumberOfCompositions, 4188 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3001, positive: 2883, positive conditional: 0, positive unconditional: 2883, negative: 118, negative conditional: 0, negative unconditional: 118, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1020, positive: 998, positive conditional: 0, positive unconditional: 998, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3001, positive: 1885, positive conditional: 0, positive unconditional: 1885, negative: 96, negative conditional: 0, negative unconditional: 96, unknown: 1020, unknown conditional: 0, unknown unconditional: 1020] , Statistics on independence cache: Total cache size (in pairs): 157, Positive cache size: 148, Positive conditional cache size: 0, Positive unconditional cache size: 148, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 154]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 38 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 24ms.. - TimeoutResultAtElement [Line: 147]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 38 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 24ms.. - TimeoutResultAtElement [Line: 144]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 38 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 24ms.. - TimeoutResultAtElement [Line: 146]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 38 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 24ms.. - TimeoutResultAtElement [Line: 145]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 38 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 24ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 263 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 753.2s, OverallIterations: 17, TraceHistogramMax: 6, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.4s, AutomataDifference: 12.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 11.7s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2221 SdHoareTripleChecker+Valid, 6.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2221 mSDsluCounter, 849 SdHoareTripleChecker+Invalid, 5.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4614 mSDsCounter, 421 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8989 IncrementalHoareTripleChecker+Invalid, 9410 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 421 mSolverCounterUnsat, 139 mSDtfsCounter, 8989 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7087 GetRequests, 6358 SyntacticMatches, 299 SemanticMatches, 430 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 7079 ImplicationChecksByTransitivity, 14.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21784occurred in iteration=16, InterpolantAutomatonStates: 189, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.0s AutomataMinimizationTime, 16 MinimizatonAttempts, 54737 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 409.3s InterpolantComputationTime, 996 NumberOfCodeBlocks, 993 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 1373 ConstructedInterpolants, 87 QuantifiedInterpolants, 24469 SizeOfPredicates, 336 NumberOfNonLiveVariables, 4986 ConjunctsInSsa, 425 ConjunctsInUnsatCore, 41 InterpolantComputations, 5 PerfectInterpolantSequences, 137/369 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown