/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/egcd-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 11:42:22,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 11:42:22,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 11:42:22,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-06 11:42:22,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-06 11:42:22,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-06 11:42:22,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-06 11:42:22,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-06 11:42:22,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-06 11:42:22,804 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-06 11:42:22,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-06 11:42:22,805 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-06 11:42:22,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-06 11:42:22,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-06 11:42:22,808 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-06 11:42:22,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-06 11:42:22,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-06 11:42:22,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-06 11:42:22,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-06 11:42:22,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-06 11:42:22,819 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-06 11:42:22,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-06 11:42:22,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-06 11:42:22,820 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-06 11:42:22,821 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-06 11:42:22,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-06 11:42:22,826 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-06 11:42:22,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-06 11:42:22,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-06 11:42:22,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-06 11:42:22,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-06 11:42:22,828 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-06 11:42:22,829 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-06 11:42:22,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-06 11:42:22,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-06 11:42:22,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-06 11:42:22,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-06 11:42:22,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-06 11:42:22,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-06 11:42:22,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 11:42:22,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 11:42:22,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 11:42:22,834 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-04-06 11:42:22,854 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 11:42:22,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 11:42:22,855 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-06 11:42:22,855 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-06 11:42:22,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-06 11:42:22,856 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-06 11:42:22,856 INFO L138 SettingsManager]: * Use SBE=true [2022-04-06 11:42:22,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 11:42:22,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 11:42:22,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 11:42:22,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 11:42:22,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 11:42:22,857 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 11:42:22,857 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 11:42:22,857 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 11:42:22,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 11:42:22,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 11:42:22,858 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 11:42:22,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 11:42:22,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 11:42:22,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 11:42:22,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-06 11:42:22,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-06 11:42:22,859 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-06 11:42:22,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-06 11:42:22,859 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-06 11:42:22,859 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-06 11:42:22,859 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-06 11:42:22,860 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-06 11:42:22,860 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 11:42:23,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 11:42:23,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 11:42:23,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 11:42:23,107 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 11:42:23,108 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 11:42:23,109 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_valuebound5.c [2022-04-06 11:42:23,154 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2d22591d/3627d19803254ef4be2c070699527e00/FLAGf54b4cf43 [2022-04-06 11:42:23,530 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 11:42:23,530 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_valuebound5.c [2022-04-06 11:42:23,538 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2d22591d/3627d19803254ef4be2c070699527e00/FLAGf54b4cf43 [2022-04-06 11:42:23,553 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2d22591d/3627d19803254ef4be2c070699527e00 [2022-04-06 11:42:23,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 11:42:23,556 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-06 11:42:23,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 11:42:23,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 11:42:23,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 11:42:23,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 11:42:23" (1/1) ... [2022-04-06 11:42:23,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d1554a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:42:23, skipping insertion in model container [2022-04-06 11:42:23,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 11:42:23" (1/1) ... [2022-04-06 11:42:23,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 11:42:23,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 11:42:23,736 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/egcd-ll_valuebound5.c[489,502] [2022-04-06 11:42:23,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 11:42:23,764 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 11:42:23,774 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/egcd-ll_valuebound5.c[489,502] [2022-04-06 11:42:23,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 11:42:23,805 INFO L208 MainTranslator]: Completed translation [2022-04-06 11:42:23,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:42:23 WrapperNode [2022-04-06 11:42:23,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 11:42:23,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 11:42:23,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 11:42:23,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 11:42:23,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:42:23" (1/1) ... [2022-04-06 11:42:23,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:42:23" (1/1) ... [2022-04-06 11:42:23,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:42:23" (1/1) ... [2022-04-06 11:42:23,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:42:23" (1/1) ... [2022-04-06 11:42:23,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:42:23" (1/1) ... [2022-04-06 11:42:23,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:42:23" (1/1) ... [2022-04-06 11:42:23,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:42:23" (1/1) ... [2022-04-06 11:42:23,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 11:42:23,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 11:42:23,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 11:42:23,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 11:42:23,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:42:23" (1/1) ... [2022-04-06 11:42:23,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 11:42:23,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 11:42:23,868 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) [2022-04-06 11:42:23,890 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 [2022-04-06 11:42:23,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 11:42:23,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 11:42:23,898 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 11:42:23,898 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-06 11:42:23,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-06 11:42:23,898 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 11:42:23,898 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 11:42:23,899 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 11:42:23,900 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 11:42:23,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 11:42:23,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 11:42:23,901 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-06 11:42:23,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-06 11:42:23,901 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 11:42:23,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 11:42:23,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 11:42:23,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 11:42:23,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 11:42:23,901 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 11:42:23,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 11:42:23,950 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 11:42:23,952 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 11:42:24,125 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 11:42:24,129 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 11:42:24,130 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-06 11:42:24,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 11:42:24 BoogieIcfgContainer [2022-04-06 11:42:24,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 11:42:24,132 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-06 11:42:24,132 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-06 11:42:24,132 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-06 11:42:24,135 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 11:42:24" (1/1) ... [2022-04-06 11:42:24,136 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-04-06 11:42:24,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 11:42:24 BasicIcfg [2022-04-06 11:42:24,150 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-06 11:42:24,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 11:42:24,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 11:42:24,161 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 11:42:24,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 11:42:23" (1/4) ... [2022-04-06 11:42:24,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f4028b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 11:42:24, skipping insertion in model container [2022-04-06 11:42:24,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:42:23" (2/4) ... [2022-04-06 11:42:24,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f4028b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 11:42:24, skipping insertion in model container [2022-04-06 11:42:24,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 11:42:24" (3/4) ... [2022-04-06 11:42:24,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f4028b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 11:42:24, skipping insertion in model container [2022-04-06 11:42:24,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 11:42:24" (4/4) ... [2022-04-06 11:42:24,164 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound5.cqvasr [2022-04-06 11:42:24,175 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-06 11:42:24,175 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 11:42:24,223 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 11:42:24,230 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-06 11:42:24,230 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 11:42:24,246 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-04-06 11:42:24,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-06 11:42:24,251 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 11:42:24,252 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 11:42:24,252 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 11:42:24,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 11:42:24,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1381881312, now seen corresponding path program 1 times [2022-04-06 11:42:24,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 11:42:24,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597596585] [2022-04-06 11:42:24,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:42:24,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 11:42:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 11:42:24,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 11:42:24,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 11:42:24,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 11:42:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 11:42:24,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 11:42:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 11:42:24,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 11:42:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 11:42:24,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-06 11:42:24,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 11:42:24,475 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-06 11:42:24,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 11:42:24,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597596585] [2022-04-06 11:42:24,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597596585] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 11:42:24,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 11:42:24,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 11:42:24,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876598200] [2022-04-06 11:42:24,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 11:42:24,482 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 11:42:24,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 11:42:24,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 11:42:24,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 11:42:24,508 INFO L87 Difference]: Start difference. First operand has 37 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 11:42:24,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 11:42:24,602 INFO L93 Difference]: Finished difference Result 67 states and 105 transitions. [2022-04-06 11:42:24,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 11:42:24,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-04-06 11:42:24,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 11:42:24,614 INFO L225 Difference]: With dead ends: 67 [2022-04-06 11:42:24,614 INFO L226 Difference]: Without dead ends: 32 [2022-04-06 11:42:24,617 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 11:42:24,621 INFO L913 BasicCegarLoop]: 36 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 11:42:24,621 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 39 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 11:42:24,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-04-06 11:42:24,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-04-06 11:42:24,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-04-06 11:42:24,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2022-04-06 11:42:24,659 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 33 [2022-04-06 11:42:24,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 11:42:24,660 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2022-04-06 11:42:24,661 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 11:42:24,661 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2022-04-06 11:42:24,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-06 11:42:24,663 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 11:42:24,663 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 11:42:24,664 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 11:42:24,664 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 11:42:24,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 11:42:24,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1975235811, now seen corresponding path program 1 times [2022-04-06 11:42:24,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 11:42:24,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906681895] [2022-04-06 11:42:24,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:42:24,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 11:42:24,706 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 11:42:24,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [702128413] [2022-04-06 11:42:24,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:42:24,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:42:24,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 11:42:24,709 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) [2022-04-06 11:42:24,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 11:42:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 11:42:24,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-06 11:42:24,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 11:42:24,952 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-06 11:42:24,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 11:42:24,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 11:42:24,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906681895] [2022-04-06 11:42:24,953 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 11:42:24,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702128413] [2022-04-06 11:42:24,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702128413] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 11:42:24,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 11:42:24,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 11:42:24,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496684281] [2022-04-06 11:42:24,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 11:42:24,955 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 11:42:24,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 11:42:24,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 11:42:24,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-06 11:42:24,956 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 11:42:25,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 11:42:25,022 INFO L93 Difference]: Finished difference Result 48 states and 65 transitions. [2022-04-06 11:42:25,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 11:42:25,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 33 [2022-04-06 11:42:25,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 11:42:25,023 INFO L225 Difference]: With dead ends: 48 [2022-04-06 11:42:25,024 INFO L226 Difference]: Without dead ends: 46 [2022-04-06 11:42:25,024 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-06 11:42:25,025 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 7 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 11:42:25,025 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 143 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 11:42:25,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-04-06 11:42:25,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2022-04-06 11:42:25,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 23 states have internal predecessors, (26), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-04-06 11:42:25,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 62 transitions. [2022-04-06 11:42:25,037 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 62 transitions. Word has length 33 [2022-04-06 11:42:25,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 11:42:25,038 INFO L478 AbstractCegarLoop]: Abstraction has 45 states and 62 transitions. [2022-04-06 11:42:25,038 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 11:42:25,038 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 62 transitions. [2022-04-06 11:42:25,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-04-06 11:42:25,038 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 11:42:25,039 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 11:42:25,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-06 11:42:25,249 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:42:25,250 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 11:42:25,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 11:42:25,250 INFO L85 PathProgramCache]: Analyzing trace with hash -759782395, now seen corresponding path program 1 times [2022-04-06 11:42:25,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 11:42:25,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255636297] [2022-04-06 11:42:25,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:42:25,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 11:42:25,268 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 11:42:25,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1881346363] [2022-04-06 11:42:25,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:42:25,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:42:25,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 11:42:25,273 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) [2022-04-06 11:42:25,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-06 11:42:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 11:42:25,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-06 11:42:25,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 11:42:25,470 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-06 11:42:25,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 11:42:25,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 11:42:25,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255636297] [2022-04-06 11:42:25,471 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 11:42:25,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881346363] [2022-04-06 11:42:25,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881346363] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 11:42:25,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 11:42:25,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 11:42:25,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809659457] [2022-04-06 11:42:25,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 11:42:25,472 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 11:42:25,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 11:42:25,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 11:42:25,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-06 11:42:25,473 INFO L87 Difference]: Start difference. First operand 45 states and 62 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-06 11:42:25,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 11:42:25,540 INFO L93 Difference]: Finished difference Result 52 states and 68 transitions. [2022-04-06 11:42:25,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 11:42:25,540 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 38 [2022-04-06 11:42:25,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 11:42:25,542 INFO L225 Difference]: With dead ends: 52 [2022-04-06 11:42:25,543 INFO L226 Difference]: Without dead ends: 50 [2022-04-06 11:42:25,543 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-06 11:42:25,546 INFO L913 BasicCegarLoop]: 44 mSDtfsCounter, 8 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 11:42:25,547 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 140 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 11:42:25,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-04-06 11:42:25,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2022-04-06 11:42:25,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 26 states have internal predecessors, (29), 19 states have call successors, (19), 6 states have call predecessors, (19), 5 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-04-06 11:42:25,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2022-04-06 11:42:25,566 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 38 [2022-04-06 11:42:25,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 11:42:25,567 INFO L478 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2022-04-06 11:42:25,567 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-06 11:42:25,567 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2022-04-06 11:42:25,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-04-06 11:42:25,570 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 11:42:25,570 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 11:42:25,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-06 11:42:25,775 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-06 11:42:25,776 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 11:42:25,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 11:42:25,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1840397536, now seen corresponding path program 1 times [2022-04-06 11:42:25,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 11:42:25,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501524702] [2022-04-06 11:42:25,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:42:25,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 11:42:25,795 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 11:42:25,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2023841517] [2022-04-06 11:42:25,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:42:25,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:42:25,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 11:42:25,798 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) [2022-04-06 11:42:25,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-06 11:42:25,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 11:42:25,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 19 conjunts are in the unsatisfiable core [2022-04-06 11:42:25,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 11:42:26,009 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-04-06 11:42:26,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 11:42:26,140 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-04-06 11:42:26,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 11:42:26,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501524702] [2022-04-06 11:42:26,141 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 11:42:26,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023841517] [2022-04-06 11:42:26,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023841517] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-06 11:42:26,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 11:42:26,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2022-04-06 11:42:26,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543174514] [2022-04-06 11:42:26,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 11:42:26,142 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 11:42:26,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 11:42:26,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 11:42:26,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-04-06 11:42:26,142 INFO L87 Difference]: Start difference. First operand 49 states and 65 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 11:42:26,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 11:42:26,204 INFO L93 Difference]: Finished difference Result 74 states and 105 transitions. [2022-04-06 11:42:26,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 11:42:26,205 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2022-04-06 11:42:26,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 11:42:26,207 INFO L225 Difference]: With dead ends: 74 [2022-04-06 11:42:26,207 INFO L226 Difference]: Without dead ends: 70 [2022-04-06 11:42:26,208 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-04-06 11:42:26,208 INFO L913 BasicCegarLoop]: 44 mSDtfsCounter, 8 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 11:42:26,208 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 137 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 11:42:26,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-04-06 11:42:26,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-04-06 11:42:26,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 37 states have internal predecessors, (42), 30 states have call successors, (30), 7 states have call predecessors, (30), 6 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-04-06 11:42:26,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 98 transitions. [2022-04-06 11:42:26,228 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 98 transitions. Word has length 43 [2022-04-06 11:42:26,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 11:42:26,229 INFO L478 AbstractCegarLoop]: Abstraction has 70 states and 98 transitions. [2022-04-06 11:42:26,229 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 11:42:26,230 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 98 transitions. [2022-04-06 11:42:26,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-04-06 11:42:26,231 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 11:42:26,231 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 11:42:26,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-06 11:42:26,443 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:42:26,444 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 11:42:26,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 11:42:26,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1590647429, now seen corresponding path program 1 times [2022-04-06 11:42:26,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 11:42:26,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903940316] [2022-04-06 11:42:26,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:42:26,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 11:42:26,456 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 11:42:26,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [863185630] [2022-04-06 11:42:26,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:42:26,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:42:26,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 11:42:26,460 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) [2022-04-06 11:42:26,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-06 11:42:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 11:42:26,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-06 11:42:26,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 11:42:26,565 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-04-06 11:42:26,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 11:42:26,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 11:42:26,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903940316] [2022-04-06 11:42:26,565 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 11:42:26,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863185630] [2022-04-06 11:42:26,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863185630] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 11:42:26,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 11:42:26,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 11:42:26,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851460623] [2022-04-06 11:42:26,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 11:42:26,566 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 11:42:26,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 11:42:26,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 11:42:26,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-06 11:42:26,568 INFO L87 Difference]: Start difference. First operand 70 states and 98 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-04-06 11:42:26,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 11:42:26,603 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2022-04-06 11:42:26,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 11:42:26,603 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 49 [2022-04-06 11:42:26,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 11:42:26,604 INFO L225 Difference]: With dead ends: 76 [2022-04-06 11:42:26,604 INFO L226 Difference]: Without dead ends: 74 [2022-04-06 11:42:26,605 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-06 11:42:26,605 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 5 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 11:42:26,606 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 139 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 11:42:26,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-04-06 11:42:26,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-04-06 11:42:26,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 36 states have (on average 1.25) internal successors, (45), 40 states have internal predecessors, (45), 30 states have call successors, (30), 8 states have call predecessors, (30), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-04-06 11:42:26,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 101 transitions. [2022-04-06 11:42:26,613 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 101 transitions. Word has length 49 [2022-04-06 11:42:26,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 11:42:26,613 INFO L478 AbstractCegarLoop]: Abstraction has 74 states and 101 transitions. [2022-04-06 11:42:26,613 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-04-06 11:42:26,613 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 101 transitions. [2022-04-06 11:42:26,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-06 11:42:26,614 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 11:42:26,614 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 11:42:26,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-06 11:42:26,827 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:42:26,828 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 11:42:26,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 11:42:26,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1737902154, now seen corresponding path program 1 times [2022-04-06 11:42:26,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 11:42:26,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291851616] [2022-04-06 11:42:26,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:42:26,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 11:42:26,837 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 11:42:26,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [575477031] [2022-04-06 11:42:26,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:42:26,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:42:26,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 11:42:26,839 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) [2022-04-06 11:42:26,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-06 11:42:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 11:42:26,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-06 11:42:26,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 11:42:27,005 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-04-06 11:42:27,006 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 11:42:27,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 11:42:27,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291851616] [2022-04-06 11:42:27,006 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 11:42:27,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575477031] [2022-04-06 11:42:27,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575477031] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 11:42:27,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 11:42:27,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 11:42:27,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716701867] [2022-04-06 11:42:27,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 11:42:27,007 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 11:42:27,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 11:42:27,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 11:42:27,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-06 11:42:27,008 INFO L87 Difference]: Start difference. First operand 74 states and 101 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-06 11:42:27,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 11:42:27,057 INFO L93 Difference]: Finished difference Result 84 states and 109 transitions. [2022-04-06 11:42:27,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 11:42:27,058 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 51 [2022-04-06 11:42:27,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 11:42:27,061 INFO L225 Difference]: With dead ends: 84 [2022-04-06 11:42:27,061 INFO L226 Difference]: Without dead ends: 81 [2022-04-06 11:42:27,062 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-06 11:42:27,064 INFO L913 BasicCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 11:42:27,064 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 146 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 11:42:27,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-04-06 11:42:27,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2022-04-06 11:42:27,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 45 states have internal predecessors, (51), 27 states have call successors, (27), 10 states have call predecessors, (27), 9 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-04-06 11:42:27,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 102 transitions. [2022-04-06 11:42:27,084 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 102 transitions. Word has length 51 [2022-04-06 11:42:27,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 11:42:27,085 INFO L478 AbstractCegarLoop]: Abstraction has 79 states and 102 transitions. [2022-04-06 11:42:27,086 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-06 11:42:27,086 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 102 transitions. [2022-04-06 11:42:27,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-04-06 11:42:27,086 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 11:42:27,087 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 11:42:27,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-06 11:42:27,291 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:42:27,292 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 11:42:27,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 11:42:27,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1046589490, now seen corresponding path program 1 times [2022-04-06 11:42:27,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 11:42:27,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64846411] [2022-04-06 11:42:27,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:42:27,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 11:42:27,308 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 11:42:27,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [394079010] [2022-04-06 11:42:27,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:42:27,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:42:27,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 11:42:27,315 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) [2022-04-06 11:42:27,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-06 11:42:27,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 11:42:27,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-06 11:42:27,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 11:42:27,445 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-04-06 11:42:27,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 11:42:27,586 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-04-06 11:42:27,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 11:42:27,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64846411] [2022-04-06 11:42:27,586 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 11:42:27,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394079010] [2022-04-06 11:42:27,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394079010] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 11:42:27,587 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 11:42:27,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-04-06 11:42:27,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654599223] [2022-04-06 11:42:27,587 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 11:42:27,588 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 11:42:27,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 11:42:27,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 11:42:27,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-04-06 11:42:27,588 INFO L87 Difference]: Start difference. First operand 79 states and 102 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-04-06 11:42:27,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 11:42:27,697 INFO L93 Difference]: Finished difference Result 88 states and 112 transitions. [2022-04-06 11:42:27,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 11:42:27,698 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 54 [2022-04-06 11:42:27,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 11:42:27,708 INFO L225 Difference]: With dead ends: 88 [2022-04-06 11:42:27,708 INFO L226 Difference]: Without dead ends: 84 [2022-04-06 11:42:27,708 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-04-06 11:42:27,709 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 13 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 11:42:27,709 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 150 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 11:42:27,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-04-06 11:42:27,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-04-06 11:42:27,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 49 states have internal predecessors, (53), 27 states have call successors, (27), 11 states have call predecessors, (27), 10 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2022-04-06 11:42:27,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 105 transitions. [2022-04-06 11:42:27,721 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 105 transitions. Word has length 54 [2022-04-06 11:42:27,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 11:42:27,722 INFO L478 AbstractCegarLoop]: Abstraction has 84 states and 105 transitions. [2022-04-06 11:42:27,722 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-04-06 11:42:27,722 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 105 transitions. [2022-04-06 11:42:27,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-04-06 11:42:27,726 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 11:42:27,727 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 11:42:27,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-06 11:42:27,939 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:42:27,940 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 11:42:27,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 11:42:27,940 INFO L85 PathProgramCache]: Analyzing trace with hash -2126309122, now seen corresponding path program 2 times [2022-04-06 11:42:27,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 11:42:27,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585745370] [2022-04-06 11:42:27,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:42:27,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 11:42:27,949 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 11:42:27,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73910298] [2022-04-06 11:42:27,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 11:42:27,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:42:27,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 11:42:27,957 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 11:42:27,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-06 11:42:27,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 11:42:27,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 11:42:27,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 23 conjunts are in the unsatisfiable core [2022-04-06 11:42:27,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 11:42:28,148 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-04-06 11:42:28,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 11:42:28,244 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-04-06 11:42:28,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 11:42:28,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585745370] [2022-04-06 11:42:28,244 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 11:42:28,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73910298] [2022-04-06 11:42:28,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73910298] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 11:42:28,244 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 11:42:28,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-04-06 11:42:28,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677451409] [2022-04-06 11:42:28,245 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 11:42:28,245 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 11:42:28,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 11:42:28,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 11:42:28,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-04-06 11:42:28,246 INFO L87 Difference]: Start difference. First operand 84 states and 105 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-04-06 11:42:28,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 11:42:28,636 INFO L93 Difference]: Finished difference Result 110 states and 141 transitions. [2022-04-06 11:42:28,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 11:42:28,636 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 56 [2022-04-06 11:42:28,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 11:42:28,637 INFO L225 Difference]: With dead ends: 110 [2022-04-06 11:42:28,637 INFO L226 Difference]: Without dead ends: 103 [2022-04-06 11:42:28,637 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-04-06 11:42:28,638 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 12 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 11:42:28,638 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 153 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 11:42:28,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-04-06 11:42:28,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 88. [2022-04-06 11:42:28,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 54 states have internal predecessors, (58), 23 states have call successors, (23), 13 states have call predecessors, (23), 12 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-04-06 11:42:28,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2022-04-06 11:42:28,647 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 56 [2022-04-06 11:42:28,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 11:42:28,647 INFO L478 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2022-04-06 11:42:28,647 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-04-06 11:42:28,647 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2022-04-06 11:42:28,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-06 11:42:28,648 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 11:42:28,648 INFO L499 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 11:42:28,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-04-06 11:42:28,868 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:42:28,868 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 11:42:28,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 11:42:28,869 INFO L85 PathProgramCache]: Analyzing trace with hash -296466288, now seen corresponding path program 1 times [2022-04-06 11:42:28,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 11:42:28,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767495206] [2022-04-06 11:42:28,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:42:28,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 11:42:28,877 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 11:42:28,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1684306702] [2022-04-06 11:42:28,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:42:28,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:42:28,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 11:42:28,879 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 11:42:28,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-04-06 11:42:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 11:42:28,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 19 conjunts are in the unsatisfiable core [2022-04-06 11:42:28,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 11:42:29,103 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-04-06 11:42:29,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 11:42:29,269 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-04-06 11:42:29,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 11:42:29,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767495206] [2022-04-06 11:42:29,269 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 11:42:29,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684306702] [2022-04-06 11:42:29,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684306702] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-06 11:42:29,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 11:42:29,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-04-06 11:42:29,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482572193] [2022-04-06 11:42:29,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 11:42:29,270 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 11:42:29,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 11:42:29,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 11:42:29,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-04-06 11:42:29,271 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-06 11:42:29,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 11:42:29,310 INFO L93 Difference]: Finished difference Result 88 states and 102 transitions. [2022-04-06 11:42:29,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 11:42:29,310 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2022-04-06 11:42:29,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 11:42:29,311 INFO L225 Difference]: With dead ends: 88 [2022-04-06 11:42:29,311 INFO L226 Difference]: Without dead ends: 0 [2022-04-06 11:42:29,311 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 128 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-04-06 11:42:29,312 INFO L913 BasicCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 11:42:29,312 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 108 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 11:42:29,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-06 11:42:29,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-06 11:42:29,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-06 11:42:29,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-06 11:42:29,313 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69 [2022-04-06 11:42:29,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 11:42:29,313 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-06 11:42:29,313 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-06 11:42:29,313 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-06 11:42:29,313 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-06 11:42:29,315 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 11:42:29,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-04-06 11:42:29,531 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-04-06 11:42:29,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-06 11:42:31,380 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-06 11:42:31,380 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-04-06 11:42:31,380 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-04-06 11:42:31,380 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-06 11:42:31,380 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-06 11:42:31,380 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-04-06 11:42:31,380 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-04-06 11:42:31,381 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-04-06 11:42:31,381 INFO L882 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2022-04-06 11:42:31,381 INFO L882 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2022-04-06 11:42:31,381 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-04-06 11:42:31,381 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 18 59) the Hoare annotation is: true [2022-04-06 11:42:31,381 INFO L885 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2022-04-06 11:42:31,381 INFO L882 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-04-06 11:42:31,381 INFO L885 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: true [2022-04-06 11:42:31,381 INFO L885 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: true [2022-04-06 11:42:31,381 INFO L885 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2022-04-06 11:42:31,381 INFO L882 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-04-06 11:42:31,381 INFO L878 garLoopResultBuilder]: At program point L43-2(lines 35 52) the Hoare annotation is: (let ((.cse0 (* main_~y~0 main_~r~0)) (.cse1 (* main_~p~0 main_~x~0))) (and (= (+ (* main_~q~0 main_~x~0) main_~a~0 (* main_~y~0 main_~s~0)) (+ .cse0 main_~b~0 .cse1)) (= main_~a~0 (+ .cse0 .cse1)) (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1)))) [2022-04-06 11:42:31,381 INFO L878 garLoopResultBuilder]: At program point L35-2(lines 35 52) the Hoare annotation is: (let ((.cse0 (* main_~y~0 main_~r~0)) (.cse1 (* main_~p~0 main_~x~0))) (let ((.cse2 (+ .cse0 .cse1))) (and (= (+ (* main_~q~0 main_~x~0) main_~a~0 (* main_~y~0 main_~s~0)) (+ .cse0 main_~b~0 .cse1)) (= main_~b~0 .cse2) (= main_~a~0 .cse2) (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1))))) [2022-04-06 11:42:31,382 INFO L878 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (* main_~y~0 main_~r~0)) (.cse1 (* main_~p~0 main_~x~0))) (and (= (+ (* main_~q~0 main_~x~0) main_~a~0 (* main_~y~0 main_~s~0)) (+ .cse0 main_~b~0 .cse1)) (= main_~a~0 (+ .cse0 .cse1)) (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1)))) [2022-04-06 11:42:31,382 INFO L878 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse0 (* main_~y~0 main_~r~0)) (.cse1 (* main_~p~0 main_~x~0))) (let ((.cse2 (+ .cse0 .cse1))) (and (= (+ (* main_~q~0 main_~x~0) main_~a~0 (* main_~y~0 main_~s~0)) (+ .cse0 main_~b~0 .cse1)) (= main_~b~0 .cse2) (= main_~a~0 .cse2) (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1))))) [2022-04-06 11:42:31,382 INFO L878 garLoopResultBuilder]: At program point L36-1(line 36) the Hoare annotation is: (let ((.cse0 (* main_~y~0 main_~r~0)) (.cse1 (* main_~p~0 main_~x~0))) (and (= (+ (* main_~q~0 main_~x~0) main_~a~0 (* main_~y~0 main_~s~0)) (+ .cse0 main_~b~0 .cse1)) (= main_~a~0 (+ .cse0 .cse1)) (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1)))) [2022-04-06 11:42:31,382 INFO L878 garLoopResultBuilder]: At program point L55(line 55) the Hoare annotation is: (let ((.cse3 (* main_~q~0 main_~x~0)) (.cse4 (* main_~y~0 main_~s~0))) (let ((.cse0 (= main_~b~0 (+ .cse3 .cse4))) (.cse1 (= main_~s~0 1)) (.cse2 (= main_~p~0 1))) (or (and (= main_~b~0 main_~a~0) .cse0 .cse1 (= main_~q~0 0) .cse2) (let ((.cse5 (* main_~y~0 main_~r~0)) (.cse6 (* main_~p~0 main_~x~0))) (let ((.cse7 (+ .cse5 .cse6))) (and (= (+ .cse3 main_~a~0 .cse4) (+ .cse5 main_~b~0 .cse6)) (= main_~b~0 .cse7) (= main_~a~0 .cse7) (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1))))) (and (= main_~r~0 0) .cse0 .cse1 (= main_~a~0 main_~x~0) .cse2)))) [2022-04-06 11:42:31,382 INFO L878 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse0 (* main_~y~0 main_~r~0)) (.cse1 (* main_~p~0 main_~x~0))) (and (= (+ (* main_~q~0 main_~x~0) main_~a~0 (* main_~y~0 main_~s~0)) (+ .cse0 main_~b~0 .cse1)) (= main_~a~0 (+ .cse0 .cse1)) (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1)))) [2022-04-06 11:42:31,382 INFO L878 garLoopResultBuilder]: At program point L56(line 56) the Hoare annotation is: (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) [2022-04-06 11:42:31,382 INFO L882 garLoopResultBuilder]: For program point L38(lines 35 52) no Hoare annotation was computed. [2022-04-06 11:42:31,382 INFO L882 garLoopResultBuilder]: For program point L57(line 57) no Hoare annotation was computed. [2022-04-06 11:42:31,382 INFO L882 garLoopResultBuilder]: For program point L43(lines 43 51) no Hoare annotation was computed. [2022-04-06 11:42:31,382 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 18 59) no Hoare annotation was computed. [2022-04-06 11:42:31,382 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 18 59) no Hoare annotation was computed. [2022-04-06 11:42:31,383 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2022-04-06 11:42:31,383 INFO L882 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2022-04-06 11:42:31,383 INFO L882 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2022-04-06 11:42:31,383 INFO L882 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2022-04-06 11:42:31,383 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-04-06 11:42:31,383 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2022-04-06 11:42:31,385 INFO L719 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 11:42:31,386 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-06 11:42:31,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 11:42:31 BasicIcfg [2022-04-06 11:42:31,395 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-06 11:42:31,395 INFO L158 Benchmark]: Toolchain (without parser) took 7839.21ms. Allocated memory was 194.0MB in the beginning and 232.8MB in the end (delta: 38.8MB). Free memory was 144.7MB in the beginning and 135.9MB in the end (delta: 8.7MB). Peak memory consumption was 48.6MB. Max. memory is 8.0GB. [2022-04-06 11:42:31,396 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 194.0MB. Free memory is still 161.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 11:42:31,396 INFO L158 Benchmark]: CACSL2BoogieTranslator took 247.16ms. Allocated memory is still 194.0MB. Free memory was 144.5MB in the beginning and 172.4MB in the end (delta: -28.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-06 11:42:31,396 INFO L158 Benchmark]: Boogie Preprocessor took 36.21ms. Allocated memory is still 194.0MB. Free memory was 172.4MB in the beginning and 171.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-06 11:42:31,396 INFO L158 Benchmark]: RCFGBuilder took 287.97ms. Allocated memory is still 194.0MB. Free memory was 170.7MB in the beginning and 160.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-06 11:42:31,396 INFO L158 Benchmark]: IcfgTransformer took 18.43ms. Allocated memory is still 194.0MB. Free memory was 160.2MB in the beginning and 158.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 11:42:31,403 INFO L158 Benchmark]: TraceAbstraction took 7243.99ms. Allocated memory was 194.0MB in the beginning and 232.8MB in the end (delta: 38.8MB). Free memory was 158.5MB in the beginning and 135.9MB in the end (delta: 22.6MB). Peak memory consumption was 62.2MB. Max. memory is 8.0GB. [2022-04-06 11:42:31,404 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 194.0MB. Free memory is still 161.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 247.16ms. Allocated memory is still 194.0MB. Free memory was 144.5MB in the beginning and 172.4MB in the end (delta: -28.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.21ms. Allocated memory is still 194.0MB. Free memory was 172.4MB in the beginning and 171.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 287.97ms. Allocated memory is still 194.0MB. Free memory was 170.7MB in the beginning and 160.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 18.43ms. Allocated memory is still 194.0MB. Free memory was 160.2MB in the beginning and 158.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 8.0GB. * TraceAbstraction took 7243.99ms. Allocated memory was 194.0MB in the beginning and 232.8MB in the end (delta: 38.8MB). Free memory was 158.5MB in the beginning and 135.9MB in the end (delta: 22.6MB). Peak memory consumption was 62.2MB. 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 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.2s, OverallIterations: 9, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.8s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 117 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 83 mSDsluCounter, 1155 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 798 mSDsCounter, 61 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 549 IncrementalHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 61 mSolverCounterUnsat, 357 mSDtfsCounter, 549 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 635 GetRequests, 576 SyntacticMatches, 7 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=8, InterpolantAutomatonStates: 48, 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, 9 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 57 PreInvPairs, 92 NumberOfFragments, 349 HoareAnnotationTreeSize, 57 FomulaSimplifications, 136 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 18 FomulaSimplificationsInter, 1691 FormulaSimplificationTreeSizeReductionInter, 1.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 426 NumberOfCodeBlocks, 426 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 635 ConstructedInterpolants, 0 QuantifiedInterpolants, 1676 SizeOfPredicates, 16 NumberOfNonLiveVariables, 1087 ConjunctsInSsa, 105 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 627/666 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (q * x + a + y * s == y * r + b + p * x && a == y * r + p * x) && p * s == q * r + 1 RESULT: Ultimate proved your program to be correct! [2022-04-06 11:42:31,419 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...