/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/loop-zilu/benchmark20_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-17 20:18:51,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-17 20:18:51,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-17 20:18:51,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-17 20:18:51,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-17 20:18:51,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-17 20:18:51,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-17 20:18:51,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-17 20:18:51,645 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-17 20:18:51,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-17 20:18:51,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-17 20:18:51,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-17 20:18:51,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-17 20:18:51,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-17 20:18:51,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-17 20:18:51,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-17 20:18:51,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-17 20:18:51,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-17 20:18:51,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-17 20:18:51,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-17 20:18:51,653 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-17 20:18:51,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-17 20:18:51,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-17 20:18:51,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-17 20:18:51,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-17 20:18:51,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-17 20:18:51,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-17 20:18:51,658 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-17 20:18:51,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-17 20:18:51,658 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-17 20:18:51,659 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-17 20:18:51,659 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-17 20:18:51,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-17 20:18:51,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-17 20:18:51,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-17 20:18:51,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-17 20:18:51,661 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-17 20:18:51,662 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-17 20:18:51,662 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-17 20:18:51,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-17 20:18:51,663 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-17 20:18:51,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-17 20:18:51,666 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-17 20:18:51,680 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-17 20:18:51,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-17 20:18:51,681 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-17 20:18:51,681 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-17 20:18:51,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-17 20:18:51,681 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-17 20:18:51,681 INFO L138 SettingsManager]: * Use SBE=true [2022-03-17 20:18:51,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-17 20:18:51,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-17 20:18:51,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-17 20:18:51,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-17 20:18:51,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-17 20:18:51,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-17 20:18:51,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-17 20:18:51,682 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-17 20:18:51,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-17 20:18:51,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-17 20:18:51,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-17 20:18:51,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-17 20:18:51,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 20:18:51,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-17 20:18:51,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-17 20:18:51,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-17 20:18:51,683 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-17 20:18:51,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-17 20:18:51,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-17 20:18:51,683 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-17 20:18:51,683 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-17 20:18:51,684 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-17 20:18:51,684 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-17 20:18:51,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-17 20:18:51,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-17 20:18:51,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-17 20:18:51,872 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-17 20:18:51,872 INFO L275 PluginConnector]: CDTParser initialized [2022-03-17 20:18:51,873 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark20_conjunctive.i [2022-03-17 20:18:51,940 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edadf089d/feb40f5184a94017a886a5bea2ee0490/FLAGbe61dec15 [2022-03-17 20:18:52,313 INFO L306 CDTParser]: Found 1 translation units. [2022-03-17 20:18:52,313 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark20_conjunctive.i [2022-03-17 20:18:52,317 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edadf089d/feb40f5184a94017a886a5bea2ee0490/FLAGbe61dec15 [2022-03-17 20:18:52,325 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edadf089d/feb40f5184a94017a886a5bea2ee0490 [2022-03-17 20:18:52,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-17 20:18:52,328 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-17 20:18:52,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-17 20:18:52,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-17 20:18:52,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-17 20:18:52,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 08:18:52" (1/1) ... [2022-03-17 20:18:52,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53cdd6f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:18:52, skipping insertion in model container [2022-03-17 20:18:52,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 08:18:52" (1/1) ... [2022-03-17 20:18:52,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-17 20:18:52,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-17 20:18:52,485 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark20_conjunctive.i[873,886] [2022-03-17 20:18:52,500 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 20:18:52,506 INFO L203 MainTranslator]: Completed pre-run [2022-03-17 20:18:52,552 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark20_conjunctive.i[873,886] [2022-03-17 20:18:52,555 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 20:18:52,566 INFO L208 MainTranslator]: Completed translation [2022-03-17 20:18:52,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:18:52 WrapperNode [2022-03-17 20:18:52,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-17 20:18:52,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-17 20:18:52,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-17 20:18:52,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-17 20:18:52,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:18:52" (1/1) ... [2022-03-17 20:18:52,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:18:52" (1/1) ... [2022-03-17 20:18:52,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:18:52" (1/1) ... [2022-03-17 20:18:52,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:18:52" (1/1) ... [2022-03-17 20:18:52,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:18:52" (1/1) ... [2022-03-17 20:18:52,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:18:52" (1/1) ... [2022-03-17 20:18:52,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:18:52" (1/1) ... [2022-03-17 20:18:52,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-17 20:18:52,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-17 20:18:52,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-17 20:18:52,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-17 20:18:52,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:18:52" (1/1) ... [2022-03-17 20:18:52,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 20:18:52,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 20:18:52,610 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) [2022-03-17 20:18:52,618 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 [2022-03-17 20:18:52,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-17 20:18:52,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-17 20:18:52,642 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-17 20:18:52,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-17 20:18:52,643 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-17 20:18:52,643 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-17 20:18:52,643 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-17 20:18:52,644 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-17 20:18:52,644 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-17 20:18:52,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-17 20:18:52,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-17 20:18:52,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2022-03-17 20:18:52,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-17 20:18:52,645 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-17 20:18:52,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-17 20:18:52,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-17 20:18:52,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-17 20:18:52,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-17 20:18:52,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-17 20:18:52,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-17 20:18:52,692 INFO L234 CfgBuilder]: Building ICFG [2022-03-17 20:18:52,693 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-17 20:18:52,770 INFO L275 CfgBuilder]: Performing block encoding [2022-03-17 20:18:52,774 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-17 20:18:52,774 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-17 20:18:52,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 08:18:52 BoogieIcfgContainer [2022-03-17 20:18:52,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-17 20:18:52,776 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-17 20:18:52,776 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-17 20:18:52,777 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-17 20:18:52,779 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 08:18:52" (1/1) ... [2022-03-17 20:18:53,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 08:18:53 BasicIcfg [2022-03-17 20:18:53,094 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-17 20:18:53,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-17 20:18:53,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-17 20:18:53,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-17 20:18:53,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 08:18:52" (1/4) ... [2022-03-17 20:18:53,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53424f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 08:18:53, skipping insertion in model container [2022-03-17 20:18:53,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:18:52" (2/4) ... [2022-03-17 20:18:53,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53424f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 08:18:53, skipping insertion in model container [2022-03-17 20:18:53,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 08:18:52" (3/4) ... [2022-03-17 20:18:53,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53424f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 08:18:53, skipping insertion in model container [2022-03-17 20:18:53,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 08:18:53" (4/4) ... [2022-03-17 20:18:53,100 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark20_conjunctive.iqvasr [2022-03-17 20:18:53,103 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-17 20:18:53,103 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-17 20:18:53,134 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-17 20:18:53,138 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-17 20:18:53,139 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-17 20:18:53,149 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-17 20:18:53,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-17 20:18:53,152 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 20:18:53,152 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 20:18:53,153 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 20:18:53,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 20:18:53,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1809217115, now seen corresponding path program 1 times [2022-03-17 20:18:53,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 20:18:53,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464703898] [2022-03-17 20:18:53,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 20:18:53,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 20:18:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 20:18:53,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 20:18:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 20:18:53,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 20:18:53,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 20:18:53,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464703898] [2022-03-17 20:18:53,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464703898] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 20:18:53,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 20:18:53,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-17 20:18:53,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928974959] [2022-03-17 20:18:53,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 20:18:53,273 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-17 20:18:53,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 20:18:53,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-17 20:18:53,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-17 20:18:53,299 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 20:18:53,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 20:18:53,329 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2022-03-17 20:18:53,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-17 20:18:53,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-03-17 20:18:53,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 20:18:53,341 INFO L225 Difference]: With dead ends: 32 [2022-03-17 20:18:53,342 INFO L226 Difference]: Without dead ends: 13 [2022-03-17 20:18:53,345 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-17 20:18:53,351 INFO L912 BasicCegarLoop]: 19 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 20:18:53,352 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 22 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 20:18:53,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-03-17 20:18:53,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-03-17 20:18:53,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 20:18:53,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-03-17 20:18:53,377 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 12 [2022-03-17 20:18:53,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 20:18:53,378 INFO L478 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-03-17 20:18:53,378 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 20:18:53,379 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-03-17 20:18:53,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-17 20:18:53,379 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 20:18:53,379 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 20:18:53,380 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-17 20:18:53,380 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 20:18:53,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 20:18:53,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1810140636, now seen corresponding path program 1 times [2022-03-17 20:18:53,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 20:18:53,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993002602] [2022-03-17 20:18:53,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 20:18:53,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 20:18:53,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 20:18:53,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 20:18:53,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 20:18:53,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 20:18:53,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 20:18:53,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993002602] [2022-03-17 20:18:53,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993002602] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 20:18:53,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 20:18:53,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-17 20:18:53,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845287819] [2022-03-17 20:18:53,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 20:18:53,477 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-17 20:18:53,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 20:18:53,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-17 20:18:53,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-17 20:18:53,478 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 20:18:53,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 20:18:53,530 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-03-17 20:18:53,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-17 20:18:53,531 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-03-17 20:18:53,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 20:18:53,532 INFO L225 Difference]: With dead ends: 19 [2022-03-17 20:18:53,532 INFO L226 Difference]: Without dead ends: 14 [2022-03-17 20:18:53,535 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-03-17 20:18:53,536 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 20:18:53,536 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 28 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 20:18:53,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-03-17 20:18:53,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-03-17 20:18:53,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 20:18:53,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-03-17 20:18:53,539 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2022-03-17 20:18:53,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 20:18:53,540 INFO L478 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-03-17 20:18:53,540 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 20:18:53,540 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-03-17 20:18:53,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-17 20:18:53,540 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 20:18:53,540 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 20:18:53,541 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-17 20:18:53,541 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 20:18:53,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 20:18:53,541 INFO L85 PathProgramCache]: Analyzing trace with hash 306506437, now seen corresponding path program 1 times [2022-03-17 20:18:53,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 20:18:53,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488423509] [2022-03-17 20:18:53,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 20:18:53,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 20:18:53,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-17 20:18:53,553 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-17 20:18:53,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-17 20:18:53,574 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-17 20:18:53,575 INFO L614 BasicCegarLoop]: Counterexample is feasible [2022-03-17 20:18:53,575 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-17 20:18:53,577 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-17 20:18:53,579 INFO L718 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-03-17 20:18:53,581 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-17 20:18:53,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 08:18:53 BasicIcfg [2022-03-17 20:18:53,593 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-17 20:18:53,594 INFO L158 Benchmark]: Toolchain (without parser) took 1266.05ms. Allocated memory was 194.0MB in the beginning and 296.7MB in the end (delta: 102.8MB). Free memory was 136.1MB in the beginning and 214.0MB in the end (delta: -77.9MB). Peak memory consumption was 25.8MB. Max. memory is 8.0GB. [2022-03-17 20:18:53,594 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 194.0MB. Free memory is still 152.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-17 20:18:53,594 INFO L158 Benchmark]: CACSL2BoogieTranslator took 236.27ms. Allocated memory was 194.0MB in the beginning and 296.7MB in the end (delta: 102.8MB). Free memory was 136.0MB in the beginning and 269.6MB in the end (delta: -133.6MB). Peak memory consumption was 16.5MB. Max. memory is 8.0GB. [2022-03-17 20:18:53,595 INFO L158 Benchmark]: Boogie Preprocessor took 18.98ms. Allocated memory is still 296.7MB. Free memory was 269.6MB in the beginning and 268.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-17 20:18:53,595 INFO L158 Benchmark]: RCFGBuilder took 189.02ms. Allocated memory is still 296.7MB. Free memory was 268.0MB in the beginning and 258.1MB in the end (delta: 9.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-17 20:18:53,595 INFO L158 Benchmark]: IcfgTransformer took 317.69ms. Allocated memory is still 296.7MB. Free memory was 258.1MB in the beginning and 248.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-17 20:18:53,596 INFO L158 Benchmark]: TraceAbstraction took 498.52ms. Allocated memory is still 296.7MB. Free memory was 247.6MB in the beginning and 214.0MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2022-03-17 20:18:53,597 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 194.0MB. Free memory is still 152.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 236.27ms. Allocated memory was 194.0MB in the beginning and 296.7MB in the end (delta: 102.8MB). Free memory was 136.0MB in the beginning and 269.6MB in the end (delta: -133.6MB). Peak memory consumption was 16.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.98ms. Allocated memory is still 296.7MB. Free memory was 269.6MB in the beginning and 268.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 189.02ms. Allocated memory is still 296.7MB. Free memory was 268.0MB in the beginning and 258.1MB in the end (delta: 9.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 317.69ms. Allocated memory is still 296.7MB. Free memory was 258.1MB in the beginning and 248.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 498.52ms. Allocated memory is still 296.7MB. Free memory was 247.6MB in the beginning and 214.0MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L20] int i = __VERIFIER_nondet_int(); [L21] int n = __VERIFIER_nondet_int(); [L22] int sum = __VERIFIER_nondet_int(); [L23] COND FALSE !(!(i==0 && n>=0 && n<=100 && sum==0)) VAL [i=0, n=0, sum=0] [L24] COND TRUE i=0) VAL [\old(cond)=0] [L15] COND TRUE !cond VAL [\old(cond)=0, cond=0] [L16] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 50 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30 IncrementalHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 30 mSDtfsCounter, 30 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 44 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 proved your program to be incorrect! [2022-03-17 20:18:53,631 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 0 Received shutdown request...