/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/prefixsum_iter.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-18 13:09:54,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 13:09:54,172 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 13:09:54,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 13:09:54,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 13:09:54,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 13:09:54,243 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 13:09:54,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 13:09:54,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 13:09:54,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 13:09:54,253 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 13:09:54,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 13:09:54,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 13:09:54,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 13:09:54,257 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 13:09:54,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 13:09:54,259 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 13:09:54,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 13:09:54,261 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 13:09:54,265 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 13:09:54,267 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 13:09:54,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 13:09:54,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 13:09:54,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 13:09:54,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 13:09:54,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-18 13:09:54,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-18 13:09:54,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-18 13:09:54,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-18 13:09:54,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-18 13:09:54,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-03-18 13:09:54,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 13:09:54,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 13:09:54,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 13:09:54,283 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-03-18 13:09:54,309 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 13:09:54,309 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 13:09:54,309 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-18 13:09:54,309 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-18 13:09:54,310 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-18 13:09:54,310 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-18 13:09:54,310 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-18 13:09:54,311 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-18 13:09:54,311 INFO L138 SettingsManager]: * Use SBE=true [2022-03-18 13:09:54,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 13:09:54,311 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-18 13:09:54,313 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 13:09:54,313 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-18 13:09:54,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 13:09:54,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 13:09:54,313 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 13:09:54,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 13:09:54,314 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-18 13:09:54,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 13:09:54,314 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 13:09:54,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 13:09:54,315 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 13:09:54,315 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 13:09:54,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 13:09:54,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 13:09:54,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 13:09:54,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-18 13:09:54,316 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-18 13:09:54,316 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 13:09:54,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-18 13:09:54,316 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-18 13:09:54,316 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-03-18 13:09:54,316 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 13:09:54,316 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 13:09:54,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 13:09:54,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 13:09:54,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 13:09:54,551 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 13:09:54,552 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 13:09:54,553 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/prefixsum_iter.c [2022-03-18 13:09:54,593 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be4b6fc82/006f42afa4544d0da42d8c680adee522/FLAGc4da7c36f [2022-03-18 13:09:54,976 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 13:09:54,977 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/verifythis/prefixsum_iter.c [2022-03-18 13:09:54,982 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be4b6fc82/006f42afa4544d0da42d8c680adee522/FLAGc4da7c36f [2022-03-18 13:09:55,404 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be4b6fc82/006f42afa4544d0da42d8c680adee522 [2022-03-18 13:09:55,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 13:09:55,409 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 13:09:55,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 13:09:55,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 13:09:55,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 13:09:55,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 01:09:55" (1/1) ... [2022-03-18 13:09:55,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@791ed16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 01:09:55, skipping insertion in model container [2022-03-18 13:09:55,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 01:09:55" (1/1) ... [2022-03-18 13:09:55,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 13:09:55,434 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 13:09:55,595 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/prefixsum_iter.c[526,539] [2022-03-18 13:09:55,621 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 13:09:55,631 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 13:09:55,638 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/prefixsum_iter.c[526,539] [2022-03-18 13:09:55,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 13:09:55,656 INFO L208 MainTranslator]: Completed translation [2022-03-18 13:09:55,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 01:09:55 WrapperNode [2022-03-18 13:09:55,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 13:09:55,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 13:09:55,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 13:09:55,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 13:09:55,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 01:09:55" (1/1) ... [2022-03-18 13:09:55,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 01:09:55" (1/1) ... [2022-03-18 13:09:55,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 01:09:55" (1/1) ... [2022-03-18 13:09:55,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 01:09:55" (1/1) ... [2022-03-18 13:09:55,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 01:09:55" (1/1) ... [2022-03-18 13:09:55,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 01:09:55" (1/1) ... [2022-03-18 13:09:55,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 01:09:55" (1/1) ... [2022-03-18 13:09:55,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 13:09:55,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 13:09:55,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 13:09:55,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 13:09:55,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 01:09:55" (1/1) ... [2022-03-18 13:09:55,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 13:09:55,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 13:09:55,708 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) [2022-03-18 13:09:55,715 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 [2022-03-18 13:09:55,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 13:09:55,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 13:09:55,738 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 13:09:55,738 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 13:09:55,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 13:09:55,738 INFO L138 BoogieDeclarations]: Found implementation of procedure upsweep [2022-03-18 13:09:55,738 INFO L138 BoogieDeclarations]: Found implementation of procedure downsweep [2022-03-18 13:09:55,738 INFO L138 BoogieDeclarations]: Found implementation of procedure is_pow2 [2022-03-18 13:09:55,739 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2022-03-18 13:09:55,739 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 13:09:55,739 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-03-18 13:09:55,739 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2022-03-18 13:09:55,739 INFO L130 BoogieDeclarations]: Found specification of procedure free [2022-03-18 13:09:55,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 13:09:55,739 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 13:09:55,739 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 13:09:55,739 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 13:09:55,739 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 13:09:55,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 13:09:55,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 13:09:55,739 INFO L130 BoogieDeclarations]: Found specification of procedure upsweep [2022-03-18 13:09:55,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 13:09:55,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 13:09:55,740 INFO L130 BoogieDeclarations]: Found specification of procedure downsweep [2022-03-18 13:09:55,740 INFO L130 BoogieDeclarations]: Found specification of procedure is_pow2 [2022-03-18 13:09:55,740 INFO L130 BoogieDeclarations]: Found specification of procedure check [2022-03-18 13:09:55,740 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 13:09:55,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-18 13:09:55,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-03-18 13:09:55,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 13:09:55,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 13:09:55,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 13:09:55,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 13:09:55,826 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 13:09:55,827 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 13:09:56,099 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 13:09:56,103 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 13:09:56,103 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-03-18 13:09:56,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 01:09:56 BoogieIcfgContainer [2022-03-18 13:09:56,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 13:09:56,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 13:09:56,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 13:09:56,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 13:09:56,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 01:09:55" (1/3) ... [2022-03-18 13:09:56,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb5f95b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 01:09:56, skipping insertion in model container [2022-03-18 13:09:56,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 01:09:55" (2/3) ... [2022-03-18 13:09:56,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb5f95b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 01:09:56, skipping insertion in model container [2022-03-18 13:09:56,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 01:09:56" (3/3) ... [2022-03-18 13:09:56,118 INFO L111 eAbstractionObserver]: Analyzing ICFG prefixsum_iter.c [2022-03-18 13:09:56,124 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-18 13:09:56,124 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 13:09:56,167 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 13:09:56,173 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-18 13:09:56,173 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 13:09:56,186 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 42 states have (on average 1.4047619047619047) internal successors, (59), 43 states have internal predecessors, (59), 11 states have call successors, (11), 9 states have call predecessors, (11), 9 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-03-18 13:09:56,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-18 13:09:56,191 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 13:09:56,192 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 13:09:56,192 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 13:09:56,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 13:09:56,197 INFO L85 PathProgramCache]: Analyzing trace with hash 242194828, now seen corresponding path program 1 times [2022-03-18 13:09:56,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 13:09:56,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720362828] [2022-03-18 13:09:56,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 13:09:56,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 13:09:56,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 13:09:56,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 13:09:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 13:09:56,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 13:09:56,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 13:09:56,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-18 13:09:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 13:09:56,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 13:09:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 13:09:56,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-18 13:09:56,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 13:09:56,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 13:09:56,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 13:09:56,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-18 13:09:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 13:09:56,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-18 13:09:56,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 13:09:56,470 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-03-18 13:09:56,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 13:09:56,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720362828] [2022-03-18 13:09:56,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720362828] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 13:09:56,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 13:09:56,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-18 13:09:56,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513820289] [2022-03-18 13:09:56,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 13:09:56,476 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-18 13:09:56,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 13:09:56,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-18 13:09:56,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-18 13:09:56,494 INFO L87 Difference]: Start difference. First operand has 64 states, 42 states have (on average 1.4047619047619047) internal successors, (59), 43 states have internal predecessors, (59), 11 states have call successors, (11), 9 states have call predecessors, (11), 9 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 13:09:56,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 13:09:56,652 INFO L93 Difference]: Finished difference Result 127 states and 171 transitions. [2022-03-18 13:09:56,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 13:09:56,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 54 [2022-03-18 13:09:56,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 13:09:56,661 INFO L225 Difference]: With dead ends: 127 [2022-03-18 13:09:56,661 INFO L226 Difference]: Without dead ends: 63 [2022-03-18 13:09:56,664 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-18 13:09:56,669 INFO L912 BasicCegarLoop]: 57 mSDtfsCounter, 81 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 13:09:56,670 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 59 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 13:09:56,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-03-18 13:09:56,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2022-03-18 13:09:56,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 38 states have internal predecessors, (45), 11 states have call successors, (11), 9 states have call predecessors, (11), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-03-18 13:09:56,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2022-03-18 13:09:56,709 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 54 [2022-03-18 13:09:56,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 13:09:56,710 INFO L478 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2022-03-18 13:09:56,710 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 13:09:56,710 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2022-03-18 13:09:56,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-18 13:09:56,713 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 13:09:56,713 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 13:09:56,713 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 13:09:56,714 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 13:09:56,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 13:09:56,714 INFO L85 PathProgramCache]: Analyzing trace with hash -73515768, now seen corresponding path program 1 times [2022-03-18 13:09:56,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 13:09:56,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601235248] [2022-03-18 13:09:56,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 13:09:56,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 13:09:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 13:09:56,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 13:09:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 13:09:56,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 13:09:56,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 13:09:56,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-18 13:09:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 13:09:56,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 13:09:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 13:09:56,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-18 13:09:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 13:09:56,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 13:09:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 13:09:56,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-18 13:09:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 13:09:56,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-18 13:09:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 13:09:56,873 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-03-18 13:09:56,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 13:09:56,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601235248] [2022-03-18 13:09:56,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601235248] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 13:09:56,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 13:09:56,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 13:09:56,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434178039] [2022-03-18 13:09:56,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 13:09:56,876 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 13:09:56,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 13:09:56,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 13:09:56,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-03-18 13:09:56,877 INFO L87 Difference]: Start difference. First operand 57 states and 65 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 13:09:57,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 13:09:57,140 INFO L93 Difference]: Finished difference Result 81 states and 95 transitions. [2022-03-18 13:09:57,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 13:09:57,141 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 54 [2022-03-18 13:09:57,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 13:09:57,145 INFO L225 Difference]: With dead ends: 81 [2022-03-18 13:09:57,145 INFO L226 Difference]: Without dead ends: 65 [2022-03-18 13:09:57,145 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-03-18 13:09:57,146 INFO L912 BasicCegarLoop]: 47 mSDtfsCounter, 84 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 13:09:57,147 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 55 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 13:09:57,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-03-18 13:09:57,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 58. [2022-03-18 13:09:57,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 39 states have internal predecessors, (46), 11 states have call successors, (11), 9 states have call predecessors, (11), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-03-18 13:09:57,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2022-03-18 13:09:57,167 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 54 [2022-03-18 13:09:57,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 13:09:57,169 INFO L478 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2022-03-18 13:09:57,169 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 13:09:57,169 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2022-03-18 13:09:57,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-18 13:09:57,172 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 13:09:57,173 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 13:09:57,173 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 13:09:57,173 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 13:09:57,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 13:09:57,174 INFO L85 PathProgramCache]: Analyzing trace with hash -628313814, now seen corresponding path program 1 times [2022-03-18 13:09:57,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 13:09:57,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777319627] [2022-03-18 13:09:57,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 13:09:57,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 13:09:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 13:09:57,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 13:09:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 13:09:57,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 13:09:57,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 13:09:57,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-18 13:09:57,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 13:09:57,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 13:09:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 13:09:57,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-18 13:09:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 13:09:57,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 13:09:57,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 13:09:57,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-03-18 13:09:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 13:09:57,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-18 13:09:57,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 13:09:57,594 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-18 13:09:57,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 13:09:57,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777319627] [2022-03-18 13:09:57,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777319627] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 13:09:57,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179083667] [2022-03-18 13:09:57,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 13:09:57,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 13:09:57,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 13:09:57,600 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) [2022-03-18 13:09:57,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 13:09:57,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 13:09:57,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-18 13:09:57,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 13:09:57,781 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-18 13:09:57,823 INFO L390 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 7 treesize of output 6 [2022-03-18 13:09:57,878 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-18 13:09:57,878 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-18 13:09:57,894 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_51 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.meminit_#ptr.base| v_ArrVal_51) |c_#memory_int|)) is different from true [2022-03-18 13:09:57,906 INFO L390 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 13 treesize of output 15 [2022-03-18 13:09:57,923 INFO L390 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 13 treesize of output 15 [2022-03-18 13:09:58,388 WARN L855 $PredicateComparison]: unable to prove that (exists ((downsweep_~n Int) (downsweep_~a.offset Int)) (= (store |c_old(#memory_int)| |c_downsweep_#in~a.base| (store (select |c_old(#memory_int)| |c_downsweep_#in~a.base|) (+ (* downsweep_~n 4) downsweep_~a.offset (- 4)) 0)) |c_#memory_int|)) is different from true [2022-03-18 13:09:58,412 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2022-03-18 13:09:58,493 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2022-03-18 13:09:58,518 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-03-18 13:09:58,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-18 13:09:58,718 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 13:09:58,719 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 20295 column 92: unknown constant v_arrayElimCell_6 at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1458) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:258) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.assertTerm(Scriptor.java:147) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript$DiffTransformer.checkOrAddAxiom(DiffWrapperScript.java:161) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript$DiffTransformer.convertApplicationTerm(DiffWrapperScript.java:171) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$BuildApplicationTerm.walk(TermTransformer.java:352) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:285) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.assertTerm(DiffWrapperScript.java:109) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.assertTerm(WrapperScript.java:158) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.assertTerm(ManagedScript.java:134) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:824) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:768) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:349) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:331) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:264) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-03-18 13:09:58,721 INFO L158 Benchmark]: Toolchain (without parser) took 3313.00ms. Allocated memory was 175.1MB in the beginning and 210.8MB in the end (delta: 35.7MB). Free memory was 123.8MB in the beginning and 134.9MB in the end (delta: -11.1MB). Peak memory consumption was 24.7MB. Max. memory is 8.0GB. [2022-03-18 13:09:58,722 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 175.1MB. Free memory is still 140.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 13:09:58,722 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.80ms. Allocated memory is still 175.1MB. Free memory was 123.5MB in the beginning and 150.0MB in the end (delta: -26.5MB). Peak memory consumption was 9.6MB. Max. memory is 8.0GB. [2022-03-18 13:09:58,722 INFO L158 Benchmark]: Boogie Preprocessor took 26.97ms. Allocated memory is still 175.1MB. Free memory was 149.4MB in the beginning and 147.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-18 13:09:58,723 INFO L158 Benchmark]: RCFGBuilder took 419.76ms. Allocated memory is still 175.1MB. Free memory was 147.9MB in the beginning and 133.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-03-18 13:09:58,723 INFO L158 Benchmark]: TraceAbstraction took 2615.35ms. Allocated memory was 175.1MB in the beginning and 210.8MB in the end (delta: 35.7MB). Free memory was 132.7MB in the beginning and 134.9MB in the end (delta: -2.2MB). Peak memory consumption was 33.9MB. Max. memory is 8.0GB. [2022-03-18 13:09:58,724 INFO L339 ainManager$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 175.1MB. Free memory is still 140.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 245.80ms. Allocated memory is still 175.1MB. Free memory was 123.5MB in the beginning and 150.0MB in the end (delta: -26.5MB). Peak memory consumption was 9.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.97ms. Allocated memory is still 175.1MB. Free memory was 149.4MB in the beginning and 147.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 419.76ms. Allocated memory is still 175.1MB. Free memory was 147.9MB in the beginning and 133.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 2615.35ms. Allocated memory was 175.1MB in the beginning and 210.8MB in the end (delta: 35.7MB). Free memory was 132.7MB in the beginning and 134.9MB in the end (delta: -2.2MB). Peak memory consumption was 33.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: line 20295 column 92: unknown constant v_arrayElimCell_6 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: line 20295 column 92: unknown constant v_arrayElimCell_6: de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1458) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-03-18 13:09:58,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 1 Received shutdown request...