/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/nla-digbench-scaling/mannadiv_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-23 23:54:13,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-23 23:54:13,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-23 23:54:13,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-23 23:54:13,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-23 23:54:13,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-23 23:54:13,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-23 23:54:13,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-23 23:54:13,831 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-23 23:54:13,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-23 23:54:13,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-23 23:54:13,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-23 23:54:13,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-23 23:54:13,836 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-23 23:54:13,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-23 23:54:13,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-23 23:54:13,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-23 23:54:13,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-23 23:54:13,845 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-23 23:54:13,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-23 23:54:13,848 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-23 23:54:13,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-23 23:54:13,850 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-23 23:54:13,851 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-23 23:54:13,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-23 23:54:13,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-23 23:54:13,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-23 23:54:13,855 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-23 23:54:13,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-23 23:54:13,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-23 23:54:13,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-23 23:54:13,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-23 23:54:13,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-23 23:54:13,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-23 23:54:13,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-23 23:54:13,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-23 23:54:13,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-23 23:54:13,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-23 23:54:13,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-23 23:54:13,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-23 23:54:13,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-23 23:54:13,860 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-02-23 23:54:13,876 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-23 23:54:13,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-23 23:54:13,878 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-23 23:54:13,878 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-23 23:54:13,879 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-23 23:54:13,879 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-23 23:54:13,879 INFO L138 SettingsManager]: * Use SBE=true [2022-02-23 23:54:13,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-23 23:54:13,880 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-23 23:54:13,880 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-23 23:54:13,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-23 23:54:13,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-23 23:54:13,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-23 23:54:13,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-23 23:54:13,881 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-23 23:54:13,881 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-23 23:54:13,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-23 23:54:13,881 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-23 23:54:13,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-23 23:54:13,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 23:54:13,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-23 23:54:13,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-23 23:54:13,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-23 23:54:13,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-23 23:54:13,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-23 23:54:13,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-23 23:54:13,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-02-23 23:54:13,882 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-23 23:54:13,882 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-23 23:54:13,882 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-23 23:54:14,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-23 23:54:14,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-23 23:54:14,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-23 23:54:14,056 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-23 23:54:14,056 INFO L275 PluginConnector]: CDTParser initialized [2022-02-23 23:54:14,057 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound10.c [2022-02-23 23:54:14,094 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb110245f/ba908ff1ea354cc2bdf2b3220d995d96/FLAG0c3c11e8e [2022-02-23 23:54:14,431 INFO L306 CDTParser]: Found 1 translation units. [2022-02-23 23:54:14,432 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound10.c [2022-02-23 23:54:14,435 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb110245f/ba908ff1ea354cc2bdf2b3220d995d96/FLAG0c3c11e8e [2022-02-23 23:54:14,879 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb110245f/ba908ff1ea354cc2bdf2b3220d995d96 [2022-02-23 23:54:14,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-23 23:54:14,882 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-23 23:54:14,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-23 23:54:14,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-23 23:54:14,886 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-23 23:54:14,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:54:14" (1/1) ... [2022-02-23 23:54:14,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48123584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:54:14, skipping insertion in model container [2022-02-23 23:54:14,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:54:14" (1/1) ... [2022-02-23 23:54:14,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-23 23:54:14,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-23 23:54:15,017 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound10.c[573,586] [2022-02-23 23:54:15,025 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 23:54:15,030 INFO L203 MainTranslator]: Completed pre-run [2022-02-23 23:54:15,037 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound10.c[573,586] [2022-02-23 23:54:15,040 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 23:54:15,048 INFO L208 MainTranslator]: Completed translation [2022-02-23 23:54:15,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:54:15 WrapperNode [2022-02-23 23:54:15,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-23 23:54:15,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-23 23:54:15,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-23 23:54:15,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-23 23:54:15,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:54:15" (1/1) ... [2022-02-23 23:54:15,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:54:15" (1/1) ... [2022-02-23 23:54:15,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:54:15" (1/1) ... [2022-02-23 23:54:15,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:54:15" (1/1) ... [2022-02-23 23:54:15,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:54:15" (1/1) ... [2022-02-23 23:54:15,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:54:15" (1/1) ... [2022-02-23 23:54:15,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:54:15" (1/1) ... [2022-02-23 23:54:15,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-23 23:54:15,068 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-23 23:54:15,068 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-23 23:54:15,068 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-23 23:54:15,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:54:15" (1/1) ... [2022-02-23 23:54:15,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 23:54:15,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 23:54:15,089 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) [2022-02-23 23:54:15,103 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 [2022-02-23 23:54:15,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-23 23:54:15,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-23 23:54:15,124 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-23 23:54:15,125 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-23 23:54:15,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-23 23:54:15,125 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-23 23:54:15,125 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-23 23:54:15,125 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-23 23:54:15,126 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-23 23:54:15,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-23 23:54:15,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-23 23:54:15,127 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-23 23:54:15,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-23 23:54:15,127 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-23 23:54:15,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-23 23:54:15,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-23 23:54:15,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-23 23:54:15,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-23 23:54:15,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-23 23:54:15,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-23 23:54:15,174 INFO L234 CfgBuilder]: Building ICFG [2022-02-23 23:54:15,176 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-23 23:54:15,263 INFO L275 CfgBuilder]: Performing block encoding [2022-02-23 23:54:15,267 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-23 23:54:15,267 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-23 23:54:15,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:54:15 BoogieIcfgContainer [2022-02-23 23:54:15,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-23 23:54:15,269 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-23 23:54:15,269 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-23 23:54:15,269 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-23 23:54:15,271 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:54:15" (1/1) ... [2022-02-23 23:54:15,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 11:54:15 BasicIcfg [2022-02-23 23:54:15,282 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-23 23:54:15,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-23 23:54:15,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-23 23:54:15,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-23 23:54:15,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 11:54:14" (1/4) ... [2022-02-23 23:54:15,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387a1030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:54:15, skipping insertion in model container [2022-02-23 23:54:15,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:54:15" (2/4) ... [2022-02-23 23:54:15,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387a1030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:54:15, skipping insertion in model container [2022-02-23 23:54:15,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:54:15" (3/4) ... [2022-02-23 23:54:15,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387a1030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 11:54:15, skipping insertion in model container [2022-02-23 23:54:15,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 11:54:15" (4/4) ... [2022-02-23 23:54:15,287 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound10.cqvasr [2022-02-23 23:54:15,290 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-23 23:54:15,290 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-23 23:54:15,318 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-23 23:54:15,322 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-23 23:54:15,323 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-23 23:54:15,332 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-23 23:54:15,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-23 23:54:15,336 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 23:54:15,336 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 23:54:15,336 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 23:54:15,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 23:54:15,340 INFO L85 PathProgramCache]: Analyzing trace with hash 734203501, now seen corresponding path program 1 times [2022-02-23 23:54:15,345 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 23:54:15,345 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489541759] [2022-02-23 23:54:15,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 23:54:15,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 23:54:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 23:54:15,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 23:54:15,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 23:54:15,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 23:54:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 23:54:15,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-23 23:54:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 23:54:15,540 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-23 23:54:15,541 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 23:54:15,541 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489541759] [2022-02-23 23:54:15,541 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489541759] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 23:54:15,542 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 23:54:15,542 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-23 23:54:15,543 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131587766] [2022-02-23 23:54:15,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 23:54:15,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-23 23:54:15,546 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 23:54:15,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-23 23:54:15,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-23 23:54:15,575 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-23 23:54:15,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 23:54:15,647 INFO L93 Difference]: Finished difference Result 54 states and 72 transitions. [2022-02-23 23:54:15,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-23 23:54:15,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-02-23 23:54:15,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 23:54:15,655 INFO L225 Difference]: With dead ends: 54 [2022-02-23 23:54:15,655 INFO L226 Difference]: Without dead ends: 26 [2022-02-23 23:54:15,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-23 23:54:15,662 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 23:54:15,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 35 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 23:54:15,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-02-23 23:54:15,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-02-23 23:54:15,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-23 23:54:15,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2022-02-23 23:54:15,703 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 22 [2022-02-23 23:54:15,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 23:54:15,704 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2022-02-23 23:54:15,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-23 23:54:15,704 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-02-23 23:54:15,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-23 23:54:15,706 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 23:54:15,706 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 23:54:15,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-23 23:54:15,706 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 23:54:15,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 23:54:15,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1669026344, now seen corresponding path program 1 times [2022-02-23 23:54:15,707 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 23:54:15,708 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895460623] [2022-02-23 23:54:15,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 23:54:15,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 23:54:15,733 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 23:54:15,733 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [997390222] [2022-02-23 23:54:15,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 23:54:15,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 23:54:15,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 23:54:15,741 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) [2022-02-23 23:54:15,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-23 23:54:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 23:54:15,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-23 23:54:15,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 23:54:15,883 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-23 23:54:15,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-23 23:54:15,883 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 23:54:15,884 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895460623] [2022-02-23 23:54:15,884 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 23:54:15,886 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997390222] [2022-02-23 23:54:15,886 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997390222] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 23:54:15,886 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 23:54:15,886 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-23 23:54:15,887 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776449155] [2022-02-23 23:54:15,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 23:54:15,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-23 23:54:15,887 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 23:54:15,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-23 23:54:15,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-23 23:54:15,888 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-23 23:54:15,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 23:54:15,901 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-02-23 23:54:15,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-23 23:54:15,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-02-23 23:54:15,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 23:54:15,903 INFO L225 Difference]: With dead ends: 34 [2022-02-23 23:54:15,903 INFO L226 Difference]: Without dead ends: 27 [2022-02-23 23:54:15,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-23 23:54:15,904 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 23:54:15,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 23:54:15,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-02-23 23:54:15,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-02-23 23:54:15,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-23 23:54:15,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-02-23 23:54:15,909 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 23 [2022-02-23 23:54:15,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 23:54:15,910 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-02-23 23:54:15,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-23 23:54:15,910 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-02-23 23:54:15,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-23 23:54:15,911 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 23:54:15,911 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 23:54:15,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-23 23:54:16,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 23:54:16,120 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 23:54:16,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 23:54:16,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1667953868, now seen corresponding path program 1 times [2022-02-23 23:54:16,120 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 23:54:16,120 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26256867] [2022-02-23 23:54:16,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 23:54:16,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 23:54:16,142 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 23:54:16,143 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [265636587] [2022-02-23 23:54:16,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 23:54:16,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 23:54:16,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 23:54:16,144 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 23:54:16,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-23 23:54:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 23:54:16,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-23 23:54:16,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 23:54:16,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-23 23:54:16,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-23 23:54:16,267 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 23:54:16,267 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26256867] [2022-02-23 23:54:16,267 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 23:54:16,268 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265636587] [2022-02-23 23:54:16,268 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265636587] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 23:54:16,268 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 23:54:16,268 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-23 23:54:16,268 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774553341] [2022-02-23 23:54:16,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 23:54:16,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-23 23:54:16,269 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 23:54:16,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-23 23:54:16,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-02-23 23:54:16,269 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-23 23:54:16,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 23:54:16,319 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2022-02-23 23:54:16,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-23 23:54:16,320 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2022-02-23 23:54:16,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 23:54:16,321 INFO L225 Difference]: With dead ends: 37 [2022-02-23 23:54:16,321 INFO L226 Difference]: Without dead ends: 35 [2022-02-23 23:54:16,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-02-23 23:54:16,322 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 19 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 23:54:16,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 121 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 23:54:16,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-02-23 23:54:16,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2022-02-23 23:54:16,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-23 23:54:16,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-02-23 23:54:16,328 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2022-02-23 23:54:16,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 23:54:16,328 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-02-23 23:54:16,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-23 23:54:16,328 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-02-23 23:54:16,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-23 23:54:16,329 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 23:54:16,329 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 23:54:16,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-23 23:54:16,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-02-23 23:54:16,540 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 23:54:16,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 23:54:16,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1179905874, now seen corresponding path program 1 times [2022-02-23 23:54:16,540 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 23:54:16,540 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061394919] [2022-02-23 23:54:16,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 23:54:16,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 23:54:16,551 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 23:54:16,551 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [155998050] [2022-02-23 23:54:16,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 23:54:16,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 23:54:16,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 23:54:16,552 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 23:54:16,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-23 23:54:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 23:54:16,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-23 23:54:16,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 23:54:16,706 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-23 23:54:16,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 23:54:16,851 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-23 23:54:16,852 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 23:54:16,852 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061394919] [2022-02-23 23:54:16,852 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 23:54:16,852 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155998050] [2022-02-23 23:54:16,853 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155998050] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 23:54:16,853 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-23 23:54:16,853 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-02-23 23:54:16,853 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368531176] [2022-02-23 23:54:16,853 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-23 23:54:16,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-23 23:54:16,855 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 23:54:16,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-23 23:54:16,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-02-23 23:54:16,856 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-23 23:54:16,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 23:54:16,929 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-02-23 23:54:16,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-23 23:54:16,929 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 29 [2022-02-23 23:54:16,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 23:54:16,930 INFO L225 Difference]: With dead ends: 39 [2022-02-23 23:54:16,931 INFO L226 Difference]: Without dead ends: 34 [2022-02-23 23:54:16,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-02-23 23:54:16,932 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 25 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 23:54:16,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 114 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 23:54:16,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-02-23 23:54:16,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2022-02-23 23:54:16,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-23 23:54:16,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2022-02-23 23:54:16,936 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 29 [2022-02-23 23:54:16,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 23:54:16,936 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2022-02-23 23:54:16,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-23 23:54:16,936 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2022-02-23 23:54:16,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-23 23:54:16,937 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 23:54:16,937 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 23:54:16,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-23 23:54:17,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 23:54:17,148 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 23:54:17,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 23:54:17,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1668946595, now seen corresponding path program 1 times [2022-02-23 23:54:17,148 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 23:54:17,148 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619518199] [2022-02-23 23:54:17,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 23:54:17,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 23:54:17,157 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 23:54:17,157 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [320868482] [2022-02-23 23:54:17,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 23:54:17,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 23:54:17,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 23:54:17,162 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 23:54:17,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-23 23:54:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 23:54:17,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-23 23:54:17,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 23:54:17,248 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-23 23:54:17,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 23:54:17,310 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-23 23:54:17,311 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 23:54:17,311 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619518199] [2022-02-23 23:54:17,311 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 23:54:17,311 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320868482] [2022-02-23 23:54:17,311 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320868482] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 23:54:17,311 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-23 23:54:17,311 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-02-23 23:54:17,311 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773990041] [2022-02-23 23:54:17,311 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-23 23:54:17,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-23 23:54:17,312 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 23:54:17,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-23 23:54:17,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-02-23 23:54:17,312 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 6 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2022-02-23 23:54:17,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 23:54:17,353 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2022-02-23 23:54:17,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-23 23:54:17,353 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 6 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 32 [2022-02-23 23:54:17,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 23:54:17,354 INFO L225 Difference]: With dead ends: 61 [2022-02-23 23:54:17,354 INFO L226 Difference]: Without dead ends: 56 [2022-02-23 23:54:17,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-02-23 23:54:17,355 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 32 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 23:54:17,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 94 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 23:54:17,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-02-23 23:54:17,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-02-23 23:54:17,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 9 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-23 23:54:17,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2022-02-23 23:54:17,361 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 32 [2022-02-23 23:54:17,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 23:54:17,361 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2022-02-23 23:54:17,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 6 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2022-02-23 23:54:17,361 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2022-02-23 23:54:17,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-23 23:54:17,362 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 23:54:17,362 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 23:54:17,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-23 23:54:17,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 23:54:17,573 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 23:54:17,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 23:54:17,573 INFO L85 PathProgramCache]: Analyzing trace with hash -906969448, now seen corresponding path program 2 times [2022-02-23 23:54:17,574 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 23:54:17,574 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728934555] [2022-02-23 23:54:17,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 23:54:17,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 23:54:17,582 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 23:54:17,583 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [727680242] [2022-02-23 23:54:17,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-23 23:54:17,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 23:54:17,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 23:54:17,584 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 23:54:17,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-23 23:54:17,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-23 23:54:17,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 23:54:17,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-23 23:54:17,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 23:54:17,747 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-23 23:54:17,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 23:54:17,874 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-02-23 23:54:17,875 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 23:54:17,875 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728934555] [2022-02-23 23:54:17,875 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 23:54:17,875 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727680242] [2022-02-23 23:54:17,875 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727680242] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 23:54:17,875 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-23 23:54:17,875 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-02-23 23:54:17,875 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677352855] [2022-02-23 23:54:17,875 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-23 23:54:17,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-23 23:54:17,876 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 23:54:17,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-23 23:54:17,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-02-23 23:54:17,876 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 12 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (14), 10 states have call predecessors, (14), 11 states have call successors, (14) [2022-02-23 23:54:18,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 23:54:18,009 INFO L93 Difference]: Finished difference Result 115 states and 131 transitions. [2022-02-23 23:54:18,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-23 23:54:18,010 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 12 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (14), 10 states have call predecessors, (14), 11 states have call successors, (14) Word has length 59 [2022-02-23 23:54:18,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 23:54:18,011 INFO L225 Difference]: With dead ends: 115 [2022-02-23 23:54:18,011 INFO L226 Difference]: Without dead ends: 110 [2022-02-23 23:54:18,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2022-02-23 23:54:18,012 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 104 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 23:54:18,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 176 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 23:54:18,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-02-23 23:54:18,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2022-02-23 23:54:18,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 82 states have (on average 1.1341463414634145) internal successors, (93), 82 states have internal predecessors, (93), 15 states have call successors, (15), 14 states have call predecessors, (15), 12 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-02-23 23:54:18,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2022-02-23 23:54:18,023 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 59 [2022-02-23 23:54:18,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 23:54:18,023 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2022-02-23 23:54:18,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 12 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (14), 10 states have call predecessors, (14), 11 states have call successors, (14) [2022-02-23 23:54:18,023 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2022-02-23 23:54:18,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-02-23 23:54:18,025 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 23:54:18,026 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 23:54:18,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-23 23:54:18,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 23:54:18,242 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 23:54:18,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 23:54:18,243 INFO L85 PathProgramCache]: Analyzing trace with hash 191644600, now seen corresponding path program 3 times [2022-02-23 23:54:18,243 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 23:54:18,243 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546247432] [2022-02-23 23:54:18,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 23:54:18,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 23:54:18,259 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 23:54:18,259 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [147996735] [2022-02-23 23:54:18,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-23 23:54:18,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 23:54:18,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 23:54:18,267 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 23:54:18,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-23 23:54:18,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-02-23 23:54:18,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-02-23 23:54:18,337 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-23 23:54:18,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-23 23:54:18,391 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-23 23:54:18,391 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-23 23:54:18,392 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-23 23:54:18,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-23 23:54:18,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 23:54:18,612 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2022-02-23 23:54:18,614 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-23 23:54:18,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 11:54:18 BasicIcfg [2022-02-23 23:54:18,653 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-23 23:54:18,654 INFO L158 Benchmark]: Toolchain (without parser) took 3771.80ms. Allocated memory was 205.5MB in the beginning and 262.1MB in the end (delta: 56.6MB). Free memory was 154.5MB in the beginning and 99.3MB in the end (delta: 55.2MB). Peak memory consumption was 113.4MB. Max. memory is 8.0GB. [2022-02-23 23:54:18,654 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 205.5MB. Free memory was 170.9MB in the beginning and 170.8MB in the end (delta: 72.7kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-23 23:54:18,654 INFO L158 Benchmark]: CACSL2BoogieTranslator took 165.55ms. Allocated memory is still 205.5MB. Free memory was 154.3MB in the beginning and 181.2MB in the end (delta: -26.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-02-23 23:54:18,654 INFO L158 Benchmark]: Boogie Preprocessor took 18.50ms. Allocated memory is still 205.5MB. Free memory was 181.2MB in the beginning and 179.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-23 23:54:18,654 INFO L158 Benchmark]: RCFGBuilder took 199.96ms. Allocated memory is still 205.5MB. Free memory was 179.5MB in the beginning and 169.7MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-23 23:54:18,655 INFO L158 Benchmark]: IcfgTransformer took 13.42ms. Allocated memory is still 205.5MB. Free memory was 169.7MB in the beginning and 168.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-23 23:54:18,655 INFO L158 Benchmark]: TraceAbstraction took 3370.30ms. Allocated memory was 205.5MB in the beginning and 262.1MB in the end (delta: 56.6MB). Free memory was 167.9MB in the beginning and 99.3MB in the end (delta: 68.5MB). Peak memory consumption was 126.5MB. Max. memory is 8.0GB. [2022-02-23 23:54:18,656 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 205.5MB. Free memory was 170.9MB in the beginning and 170.8MB in the end (delta: 72.7kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 165.55ms. Allocated memory is still 205.5MB. Free memory was 154.3MB in the beginning and 181.2MB in the end (delta: -26.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.50ms. Allocated memory is still 205.5MB. Free memory was 181.2MB in the beginning and 179.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 199.96ms. Allocated memory is still 205.5MB. Free memory was 179.5MB in the beginning and 169.7MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 13.42ms. Allocated memory is still 205.5MB. Free memory was 169.7MB in the beginning and 168.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 3370.30ms. Allocated memory was 205.5MB in the beginning and 262.1MB in the end (delta: 56.6MB). Free memory was 167.9MB in the beginning and 99.3MB in the end (delta: 68.5MB). Peak memory consumption was 126.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [\old(counter)=13, counter=0] [L24] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L29] CALL assume_abort_if_not(x1 >= 0) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L29] RET assume_abort_if_not(x1 >= 0) VAL [\old(counter)=0, counter=0, x1=11, x2=1] [L30] CALL assume_abort_if_not(x2 != 0) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L30] RET assume_abort_if_not(x2 != 0) VAL [\old(counter)=0, counter=0, x1=11, x2=1] [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 VAL [\old(counter)=0, counter=0, x1=11, x2=1, y1=0, y2=0, y3=11] [L36] EXPR counter++ VAL [\old(counter)=0, counter=1, counter++=0, x1=11, x2=1, y1=0, y2=0, y3=11] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=1, x1=11, x2=1, y1=0, y2=0, y3=11] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=1, x1=11, x2=1, y1=0, y2=0, y3=11] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=1, x1=11, x2=1, y1=1, y2=0, y3=10] [L36] EXPR counter++ VAL [\old(counter)=0, counter=2, counter++=1, x1=11, x2=1, y1=1, y2=0, y3=10] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=2, x1=11, x2=1, y1=1, y2=0, y3=10] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=2, x1=11, x2=1, y1=1, y2=0, y3=10] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=2, x1=11, x2=1, y1=2, y2=0, y3=9] [L36] EXPR counter++ VAL [\old(counter)=0, counter=3, counter++=2, x1=11, x2=1, y1=2, y2=0, y3=9] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=3] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=3] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=3, x1=11, x2=1, y1=2, y2=0, y3=9] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=3, x1=11, x2=1, y1=2, y2=0, y3=9] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=3, x1=11, x2=1, y1=3, y2=0, y3=8] [L36] EXPR counter++ VAL [\old(counter)=0, counter=4, counter++=3, x1=11, x2=1, y1=3, y2=0, y3=8] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=4, x1=11, x2=1, y1=3, y2=0, y3=8] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=4, x1=11, x2=1, y1=3, y2=0, y3=8] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=4, x1=11, x2=1, y1=4, y2=0, y3=7] [L36] EXPR counter++ VAL [\old(counter)=0, counter=5, counter++=4, x1=11, x2=1, y1=4, y2=0, y3=7] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=5, x1=11, x2=1, y1=4, y2=0, y3=7] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=5, x1=11, x2=1, y1=4, y2=0, y3=7] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=5, x1=11, x2=1, y1=5, y2=0, y3=6] [L36] EXPR counter++ VAL [\old(counter)=0, counter=6, counter++=5, x1=11, x2=1, y1=5, y2=0, y3=6] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=6] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=6] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=6, x1=11, x2=1, y1=5, y2=0, y3=6] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=6, x1=11, x2=1, y1=5, y2=0, y3=6] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=6, x1=11, x2=1, y1=6, y2=0, y3=5] [L36] EXPR counter++ VAL [\old(counter)=0, counter=7, counter++=6, x1=11, x2=1, y1=6, y2=0, y3=5] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=7] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=7] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=7, x1=11, x2=1, y1=6, y2=0, y3=5] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=7, x1=11, x2=1, y1=6, y2=0, y3=5] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=7, x1=11, x2=1, y1=7, y2=0, y3=4] [L36] EXPR counter++ VAL [\old(counter)=0, counter=8, counter++=7, x1=11, x2=1, y1=7, y2=0, y3=4] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=8] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=8] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=8, x1=11, x2=1, y1=7, y2=0, y3=4] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=8, x1=11, x2=1, y1=7, y2=0, y3=4] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=8, x1=11, x2=1, y1=8, y2=0, y3=3] [L36] EXPR counter++ VAL [\old(counter)=0, counter=9, counter++=8, x1=11, x2=1, y1=8, y2=0, y3=3] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=9] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=9] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=9, x1=11, x2=1, y1=8, y2=0, y3=3] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=9, x1=11, x2=1, y1=8, y2=0, y3=3] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=9, x1=11, x2=1, y1=9, y2=0, y3=2] [L36] EXPR counter++ VAL [\old(counter)=0, counter=10, counter++=9, x1=11, x2=1, y1=9, y2=0, y3=2] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=10] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=10] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=10, x1=11, x2=1, y1=9, y2=0, y3=2] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=10, x1=11, x2=1, y1=9, y2=0, y3=2] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=10, x1=11, x2=1, y1=10, y2=0, y3=1] [L36] EXPR counter++ VAL [\old(counter)=0, counter=11, counter++=10, x1=11, x2=1, y1=10, y2=0, y3=1] [L36] COND FALSE !(counter++<10) [L50] CALL __VERIFIER_assert(y1*x2 + y2 == x1) VAL [\old(cond)=0, \old(counter)=0, counter=11] [L16] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=11] [L18] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.3s, OverallIterations: 7, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 194 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 190 mSDsluCounter, 607 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 444 mSDsCounter, 83 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 219 IncrementalHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 83 mSolverCounterUnsat, 163 mSDtfsCounter, 219 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 308 GetRequests, 255 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=6, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 301 NumberOfCodeBlocks, 301 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 299 ConstructedInterpolants, 0 QuantifiedInterpolants, 699 SizeOfPredicates, 18 NumberOfNonLiveVariables, 591 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 82/188 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! [2022-02-23 23:54:18,682 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...