/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_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-23 22:34:53,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-23 22:34:53,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-23 22:34:53,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-23 22:34:53,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-23 22:34:53,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-23 22:34:53,954 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-23 22:34:53,959 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-23 22:34:53,961 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-23 22:34:53,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-23 22:34:53,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-23 22:34:53,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-23 22:34:53,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-23 22:34:53,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-23 22:34:53,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-23 22:34:53,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-23 22:34:53,968 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-23 22:34:53,969 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-23 22:34:53,970 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-23 22:34:53,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-23 22:34:53,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-23 22:34:53,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-23 22:34:53,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-23 22:34:53,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-23 22:34:53,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-23 22:34:53,982 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-23 22:34:53,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-23 22:34:53,983 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-23 22:34:53,983 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-23 22:34:53,984 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-23 22:34:53,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-23 22:34:53,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-23 22:34:53,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-23 22:34:53,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-23 22:34:53,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-23 22:34:53,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-23 22:34:53,986 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-23 22:34:53,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-23 22:34:53,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-23 22:34:53,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-23 22:34:53,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-23 22:34:53,993 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-02-23 22:34:54,024 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-23 22:34:54,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-23 22:34:54,025 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-23 22:34:54,025 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-23 22:34:54,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-23 22:34:54,025 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-23 22:34:54,025 INFO L138 SettingsManager]: * Use SBE=true [2022-02-23 22:34:54,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-23 22:34:54,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-23 22:34:54,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-23 22:34:54,026 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-23 22:34:54,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-23 22:34:54,026 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-23 22:34:54,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-23 22:34:54,026 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-23 22:34:54,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-23 22:34:54,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-23 22:34:54,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-23 22:34:54,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-23 22:34:54,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 22:34:54,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-23 22:34:54,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-23 22:34:54,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-23 22:34:54,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-23 22:34:54,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-23 22:34:54,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-23 22:34:54,035 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-02-23 22:34:54,035 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-23 22:34:54,037 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-23 22:34:54,037 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-23 22:34:54,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-23 22:34:54,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-23 22:34:54,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-23 22:34:54,254 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-23 22:34:54,255 INFO L275 PluginConnector]: CDTParser initialized [2022-02-23 22:34:54,256 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_valuebound2.c [2022-02-23 22:34:54,298 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69fc508f1/739d9dbf3fbd49d482e640597f5c0b02/FLAGb7c00b5f2 [2022-02-23 22:34:54,674 INFO L306 CDTParser]: Found 1 translation units. [2022-02-23 22:34:54,674 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_valuebound2.c [2022-02-23 22:34:54,679 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69fc508f1/739d9dbf3fbd49d482e640597f5c0b02/FLAGb7c00b5f2 [2022-02-23 22:34:55,077 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69fc508f1/739d9dbf3fbd49d482e640597f5c0b02 [2022-02-23 22:34:55,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-23 22:34:55,080 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-23 22:34:55,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-23 22:34:55,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-23 22:34:55,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-23 22:34:55,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:34:55" (1/1) ... [2022-02-23 22:34:55,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f281993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:55, skipping insertion in model container [2022-02-23 22:34:55,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:34:55" (1/1) ... [2022-02-23 22:34:55,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-23 22:34:55,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-23 22:34:55,238 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_valuebound2.c[489,502] [2022-02-23 22:34:55,249 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 22:34:55,255 INFO L203 MainTranslator]: Completed pre-run [2022-02-23 22:34:55,262 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_valuebound2.c[489,502] [2022-02-23 22:34:55,271 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 22:34:55,280 INFO L208 MainTranslator]: Completed translation [2022-02-23 22:34:55,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:55 WrapperNode [2022-02-23 22:34:55,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-23 22:34:55,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-23 22:34:55,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-23 22:34:55,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-23 22:34:55,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:55" (1/1) ... [2022-02-23 22:34:55,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:55" (1/1) ... [2022-02-23 22:34:55,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:55" (1/1) ... [2022-02-23 22:34:55,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:55" (1/1) ... [2022-02-23 22:34:55,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:55" (1/1) ... [2022-02-23 22:34:55,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:55" (1/1) ... [2022-02-23 22:34:55,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:55" (1/1) ... [2022-02-23 22:34:55,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-23 22:34:55,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-23 22:34:55,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-23 22:34:55,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-23 22:34:55,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:55" (1/1) ... [2022-02-23 22:34:55,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 22:34:55,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 22:34:55,325 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-23 22:34:55,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-23 22:34:55,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-23 22:34:55,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-23 22:34:55,350 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-23 22:34:55,350 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-23 22:34:55,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-23 22:34:55,350 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-23 22:34:55,351 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-23 22:34:55,351 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-23 22:34:55,351 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-23 22:34:55,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-23 22:34:55,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-23 22:34:55,351 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-23 22:34:55,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-23 22:34:55,351 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-23 22:34:55,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-23 22:34:55,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-23 22:34:55,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-23 22:34:55,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-23 22:34:55,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-23 22:34:55,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-23 22:34:55,404 INFO L234 CfgBuilder]: Building ICFG [2022-02-23 22:34:55,405 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-23 22:34:55,500 INFO L275 CfgBuilder]: Performing block encoding [2022-02-23 22:34:55,504 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-23 22:34:55,504 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-23 22:34:55,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:34:55 BoogieIcfgContainer [2022-02-23 22:34:55,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-23 22:34:55,506 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-23 22:34:55,506 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-23 22:34:55,532 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-23 22:34:55,534 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:34:55" (1/1) ... [2022-02-23 22:34:55,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 10:34:55 BasicIcfg [2022-02-23 22:34:55,547 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-23 22:34:55,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-23 22:34:55,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-23 22:34:55,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-23 22:34:55,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 10:34:55" (1/4) ... [2022-02-23 22:34:55,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3933e44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:34:55, skipping insertion in model container [2022-02-23 22:34:55,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:55" (2/4) ... [2022-02-23 22:34:55,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3933e44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:34:55, skipping insertion in model container [2022-02-23 22:34:55,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:34:55" (3/4) ... [2022-02-23 22:34:55,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3933e44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:34:55, skipping insertion in model container [2022-02-23 22:34:55,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 10:34:55" (4/4) ... [2022-02-23 22:34:55,567 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound2.cqvasr [2022-02-23 22:34:55,571 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-23 22:34:55,571 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-23 22:34:55,607 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-23 22:34:55,617 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-23 22:34:55,617 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-23 22:34:55,649 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) [2022-02-23 22:34:55,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-23 22:34:55,653 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 22:34:55,654 INFO L514 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] [2022-02-23 22:34:55,654 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 22:34:55,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 22:34:55,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1381881312, now seen corresponding path program 1 times [2022-02-23 22:34:55,664 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 22:34:55,665 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841395712] [2022-02-23 22:34:55,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:34:55,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 22:34:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:34:55,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 22:34:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:34:55,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 22:34:55,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:34:55,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 22:34:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:34:55,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-23 22:34:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:34:55,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-23 22:34:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:34:55,823 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-23 22:34:55,823 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 22:34:55,824 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841395712] [2022-02-23 22:34:55,824 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841395712] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 22:34:55,824 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 22:34:55,824 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-23 22:34:55,826 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715065703] [2022-02-23 22:34:55,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 22:34:55,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-23 22:34:55,829 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 22:34:55,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-23 22:34:55,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-23 22:34:55,848 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) [2022-02-23 22:34:55,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 22:34:55,912 INFO L93 Difference]: Finished difference Result 67 states and 105 transitions. [2022-02-23 22:34:55,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-23 22:34:55,914 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 [2022-02-23 22:34:55,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 22:34:55,919 INFO L225 Difference]: With dead ends: 67 [2022-02-23 22:34:55,919 INFO L226 Difference]: Without dead ends: 32 [2022-02-23 22:34:55,921 INFO L932 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 [2022-02-23 22:34:55,923 INFO L933 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, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 22:34:55,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 39 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 22:34:55,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-02-23 22:34:55,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-02-23 22:34:55,949 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) [2022-02-23 22:34:55,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2022-02-23 22:34:55,951 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 33 [2022-02-23 22:34:55,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 22:34:55,952 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2022-02-23 22:34:55,952 INFO L471 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) [2022-02-23 22:34:55,952 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2022-02-23 22:34:55,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-23 22:34:55,953 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 22:34:55,953 INFO L514 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] [2022-02-23 22:34:55,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-23 22:34:55,954 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 22:34:55,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 22:34:55,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1975235811, now seen corresponding path program 1 times [2022-02-23 22:34:55,955 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 22:34:55,955 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129813629] [2022-02-23 22:34:55,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:34:55,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 22:34:55,972 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 22:34:55,972 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [185797486] [2022-02-23 22:34:55,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:34:55,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 22:34:55,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 22:34:55,974 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 22:34:55,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-23 22:34:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:34:56,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-23 22:34:56,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 22:34:56,162 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-23 22:34:56,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-23 22:34:56,163 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 22:34:56,163 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129813629] [2022-02-23 22:34:56,163 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 22:34:56,163 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185797486] [2022-02-23 22:34:56,163 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185797486] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 22:34:56,163 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 22:34:56,164 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-23 22:34:56,164 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206240918] [2022-02-23 22:34:56,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 22:34:56,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-23 22:34:56,165 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 22:34:56,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-23 22:34:56,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-23 22:34:56,166 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) [2022-02-23 22:34:56,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 22:34:56,204 INFO L93 Difference]: Finished difference Result 48 states and 65 transitions. [2022-02-23 22:34:56,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-23 22:34:56,204 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 [2022-02-23 22:34:56,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 22:34:56,205 INFO L225 Difference]: With dead ends: 48 [2022-02-23 22:34:56,205 INFO L226 Difference]: Without dead ends: 46 [2022-02-23 22:34:56,206 INFO L932 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 [2022-02-23 22:34:56,206 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 7 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 22:34:56,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 155 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 22:34:56,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-02-23 22:34:56,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2022-02-23 22:34:56,215 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) [2022-02-23 22:34:56,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 62 transitions. [2022-02-23 22:34:56,217 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 62 transitions. Word has length 33 [2022-02-23 22:34:56,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 22:34:56,217 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 62 transitions. [2022-02-23 22:34:56,217 INFO L471 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) [2022-02-23 22:34:56,217 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 62 transitions. [2022-02-23 22:34:56,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-23 22:34:56,218 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 22:34:56,218 INFO L514 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] [2022-02-23 22:34:56,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-02-23 22:34:56,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 22:34:56,439 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 22:34:56,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 22:34:56,440 INFO L85 PathProgramCache]: Analyzing trace with hash -759782395, now seen corresponding path program 1 times [2022-02-23 22:34:56,440 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 22:34:56,440 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470221905] [2022-02-23 22:34:56,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:34:56,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 22:34:56,453 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 22:34:56,454 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [746607619] [2022-02-23 22:34:56,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:34:56,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 22:34:56,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 22:34:56,455 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 22:34:56,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-23 22:34:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:34:56,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-23 22:34:56,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 22:34:56,836 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-23 22:34:56,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-23 22:34:56,837 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 22:34:56,838 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470221905] [2022-02-23 22:34:56,839 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 22:34:56,839 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746607619] [2022-02-23 22:34:56,839 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746607619] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 22:34:56,839 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 22:34:56,839 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-23 22:34:56,839 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400804841] [2022-02-23 22:34:56,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 22:34:56,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-23 22:34:56,840 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 22:34:56,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-23 22:34:56,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-02-23 22:34:56,841 INFO L87 Difference]: Start difference. First operand 45 states and 62 transitions. Second operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-02-23 22:34:56,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 22:34:56,960 INFO L93 Difference]: Finished difference Result 52 states and 68 transitions. [2022-02-23 22:34:56,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-23 22:34:56,961 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 38 [2022-02-23 22:34:56,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 22:34:56,962 INFO L225 Difference]: With dead ends: 52 [2022-02-23 22:34:56,962 INFO L226 Difference]: Without dead ends: 50 [2022-02-23 22:34:56,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-02-23 22:34:56,964 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 24 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 22:34:56,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 238 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 22:34:56,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-02-23 22:34:56,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2022-02-23 22:34:56,973 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) [2022-02-23 22:34:56,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2022-02-23 22:34:56,974 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 38 [2022-02-23 22:34:56,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 22:34:56,974 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2022-02-23 22:34:56,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-02-23 22:34:56,975 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2022-02-23 22:34:56,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-23 22:34:56,975 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 22:34:56,976 INFO L514 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] [2022-02-23 22:34:56,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-23 22:34:57,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-02-23 22:34:57,193 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 22:34:57,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 22:34:57,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1840397536, now seen corresponding path program 1 times [2022-02-23 22:34:57,194 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 22:34:57,194 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963539627] [2022-02-23 22:34:57,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:34:57,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 22:34:57,205 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 22:34:57,205 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [57594003] [2022-02-23 22:34:57,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:34:57,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 22:34:57,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 22:34:57,207 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 22:34:57,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-23 22:34:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:34:57,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-23 22:34:57,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 22:34:57,472 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-02-23 22:34:57,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-23 22:34:57,472 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 22:34:57,473 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963539627] [2022-02-23 22:34:57,473 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 22:34:57,473 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57594003] [2022-02-23 22:34:57,473 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57594003] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 22:34:57,473 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 22:34:57,473 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-23 22:34:57,473 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466717552] [2022-02-23 22:34:57,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 22:34:57,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-23 22:34:57,474 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 22:34:57,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-23 22:34:57,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-02-23 22:34:57,475 INFO L87 Difference]: Start difference. First operand 49 states and 65 transitions. Second operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-02-23 22:34:57,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 22:34:57,576 INFO L93 Difference]: Finished difference Result 74 states and 105 transitions. [2022-02-23 22:34:57,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-23 22:34:57,576 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) Word has length 43 [2022-02-23 22:34:57,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 22:34:57,580 INFO L225 Difference]: With dead ends: 74 [2022-02-23 22:34:57,580 INFO L226 Difference]: Without dead ends: 70 [2022-02-23 22:34:57,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-02-23 22:34:57,584 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 40 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 22:34:57,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 190 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 22:34:57,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-02-23 22:34:57,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-02-23 22:34:57,609 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) [2022-02-23 22:34:57,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 98 transitions. [2022-02-23 22:34:57,616 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 98 transitions. Word has length 43 [2022-02-23 22:34:57,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 22:34:57,618 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 98 transitions. [2022-02-23 22:34:57,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-02-23 22:34:57,618 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 98 transitions. [2022-02-23 22:34:57,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-02-23 22:34:57,620 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 22:34:57,621 INFO L514 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] [2022-02-23 22:34:57,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-23 22:34:57,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 22:34:57,842 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 22:34:57,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 22:34:57,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1590647429, now seen corresponding path program 1 times [2022-02-23 22:34:57,842 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 22:34:57,843 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704475099] [2022-02-23 22:34:57,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:34:57,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 22:34:57,861 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 22:34:57,861 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [887797437] [2022-02-23 22:34:57,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:34:57,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 22:34:57,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 22:34:57,873 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 22:34:57,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-23 22:34:57,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:34:57,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-23 22:34:57,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 22:34:57,976 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-02-23 22:34:57,976 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-23 22:34:57,976 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 22:34:57,976 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704475099] [2022-02-23 22:34:57,976 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 22:34:57,976 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887797437] [2022-02-23 22:34:57,976 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887797437] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 22:34:57,977 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 22:34:57,977 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-23 22:34:57,977 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242674885] [2022-02-23 22:34:57,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 22:34:57,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-23 22:34:57,977 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 22:34:57,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-23 22:34:57,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-23 22:34:57,978 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) [2022-02-23 22:34:58,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 22:34:58,006 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2022-02-23 22:34:58,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-23 22:34:58,006 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 [2022-02-23 22:34:58,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 22:34:58,007 INFO L225 Difference]: With dead ends: 76 [2022-02-23 22:34:58,007 INFO L226 Difference]: Without dead ends: 74 [2022-02-23 22:34:58,007 INFO L932 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 [2022-02-23 22:34:58,008 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 5 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 22:34:58,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 147 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 22:34:58,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-02-23 22:34:58,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-02-23 22:34:58,017 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) [2022-02-23 22:34:58,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 101 transitions. [2022-02-23 22:34:58,018 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 101 transitions. Word has length 49 [2022-02-23 22:34:58,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 22:34:58,018 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 101 transitions. [2022-02-23 22:34:58,018 INFO L471 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) [2022-02-23 22:34:58,019 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 101 transitions. [2022-02-23 22:34:58,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-23 22:34:58,019 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 22:34:58,019 INFO L514 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] [2022-02-23 22:34:58,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-23 22:34:58,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 22:34:58,245 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 22:34:58,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 22:34:58,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1737902154, now seen corresponding path program 1 times [2022-02-23 22:34:58,246 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 22:34:58,246 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765210701] [2022-02-23 22:34:58,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:34:58,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 22:34:58,271 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 22:34:58,271 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2144212878] [2022-02-23 22:34:58,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:34:58,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 22:34:58,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 22:34:58,273 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 22:34:58,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-23 22:34:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:34:58,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-23 22:34:58,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 22:34:58,500 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-02-23 22:34:58,501 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-23 22:34:58,501 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 22:34:58,501 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765210701] [2022-02-23 22:34:58,501 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 22:34:58,501 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144212878] [2022-02-23 22:34:58,501 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144212878] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 22:34:58,501 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 22:34:58,501 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-23 22:34:58,502 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313637089] [2022-02-23 22:34:58,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 22:34:58,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-23 22:34:58,502 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 22:34:58,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-23 22:34:58,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-23 22:34:58,503 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) [2022-02-23 22:34:58,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 22:34:58,545 INFO L93 Difference]: Finished difference Result 84 states and 109 transitions. [2022-02-23 22:34:58,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-23 22:34:58,546 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 [2022-02-23 22:34:58,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 22:34:58,547 INFO L225 Difference]: With dead ends: 84 [2022-02-23 22:34:58,547 INFO L226 Difference]: Without dead ends: 81 [2022-02-23 22:34:58,547 INFO L932 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 [2022-02-23 22:34:58,547 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 22:34:58,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 158 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 22:34:58,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-02-23 22:34:58,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2022-02-23 22:34:58,555 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) [2022-02-23 22:34:58,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 102 transitions. [2022-02-23 22:34:58,555 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 102 transitions. Word has length 51 [2022-02-23 22:34:58,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 22:34:58,556 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 102 transitions. [2022-02-23 22:34:58,556 INFO L471 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) [2022-02-23 22:34:58,556 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 102 transitions. [2022-02-23 22:34:58,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-23 22:34:58,557 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 22:34:58,557 INFO L514 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] [2022-02-23 22:34:58,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-23 22:34:58,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 22:34:58,795 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 22:34:58,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 22:34:58,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1046589490, now seen corresponding path program 1 times [2022-02-23 22:34:58,795 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 22:34:58,795 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85740667] [2022-02-23 22:34:58,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:34:58,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 22:34:58,816 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 22:34:58,816 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [670212246] [2022-02-23 22:34:58,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:34:58,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 22:34:58,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 22:34:58,836 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 22:34:58,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-23 22:34:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:34:58,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-23 22:34:58,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 22:34:58,965 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-02-23 22:34:58,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 22:34:59,084 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-02-23 22:34:59,085 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 22:34:59,085 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85740667] [2022-02-23 22:34:59,085 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 22:34:59,085 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670212246] [2022-02-23 22:34:59,085 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670212246] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 22:34:59,085 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-23 22:34:59,085 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-02-23 22:34:59,085 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44519825] [2022-02-23 22:34:59,085 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-23 22:34:59,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-23 22:34:59,086 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 22:34:59,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-23 22:34:59,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-02-23 22:34:59,086 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) [2022-02-23 22:34:59,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 22:34:59,179 INFO L93 Difference]: Finished difference Result 88 states and 112 transitions. [2022-02-23 22:34:59,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-23 22:34:59,179 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 [2022-02-23 22:34:59,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 22:34:59,180 INFO L225 Difference]: With dead ends: 88 [2022-02-23 22:34:59,180 INFO L226 Difference]: Without dead ends: 84 [2022-02-23 22:34:59,180 INFO L932 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 [2022-02-23 22:34:59,181 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 13 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 22:34:59,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 199 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 22:34:59,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-02-23 22:34:59,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-02-23 22:34:59,188 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) [2022-02-23 22:34:59,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 105 transitions. [2022-02-23 22:34:59,189 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 105 transitions. Word has length 54 [2022-02-23 22:34:59,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 22:34:59,189 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 105 transitions. [2022-02-23 22:34:59,189 INFO L471 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) [2022-02-23 22:34:59,189 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 105 transitions. [2022-02-23 22:34:59,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-02-23 22:34:59,190 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 22:34:59,190 INFO L514 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] [2022-02-23 22:34:59,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-23 22:34:59,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 22:34:59,407 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 22:34:59,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 22:34:59,408 INFO L85 PathProgramCache]: Analyzing trace with hash -2126309122, now seen corresponding path program 2 times [2022-02-23 22:34:59,408 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 22:34:59,408 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916325144] [2022-02-23 22:34:59,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:34:59,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 22:34:59,417 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 22:34:59,417 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [827187163] [2022-02-23 22:34:59,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-23 22:34:59,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 22:34:59,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 22:34:59,436 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) [2022-02-23 22:34:59,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-23 22:34:59,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-23 22:34:59,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 22:34:59,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 41 conjunts are in the unsatisfiable core [2022-02-23 22:34:59,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 22:34:59,734 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-02-23 22:34:59,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 22:34:59,955 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-02-23 22:34:59,955 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 22:34:59,956 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916325144] [2022-02-23 22:34:59,956 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 22:34:59,956 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827187163] [2022-02-23 22:34:59,956 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827187163] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 22:34:59,956 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-23 22:34:59,956 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 16 [2022-02-23 22:34:59,956 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025096362] [2022-02-23 22:34:59,956 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-23 22:34:59,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-23 22:34:59,956 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 22:34:59,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-23 22:34:59,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-02-23 22:34:59,958 INFO L87 Difference]: Start difference. First operand 84 states and 105 transitions. Second operand has 16 states, 16 states have (on average 2.0) internal successors, (32), 14 states have internal predecessors, (32), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 8 states have call predecessors, (17), 6 states have call successors, (17) [2022-02-23 22:35:00,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 22:35:00,396 INFO L93 Difference]: Finished difference Result 119 states and 153 transitions. [2022-02-23 22:35:00,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-23 22:35:00,397 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 14 states have internal predecessors, (32), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 8 states have call predecessors, (17), 6 states have call successors, (17) Word has length 56 [2022-02-23 22:35:00,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 22:35:00,398 INFO L225 Difference]: With dead ends: 119 [2022-02-23 22:35:00,398 INFO L226 Difference]: Without dead ends: 117 [2022-02-23 22:35:00,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2022-02-23 22:35:00,399 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 48 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-23 22:35:00,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 208 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-23 22:35:00,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-02-23 22:35:00,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 96. [2022-02-23 22:35:00,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 58 states have internal predecessors, (62), 27 states have call successors, (27), 14 states have call predecessors, (27), 13 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2022-02-23 22:35:00,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 114 transitions. [2022-02-23 22:35:00,410 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 114 transitions. Word has length 56 [2022-02-23 22:35:00,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 22:35:00,411 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 114 transitions. [2022-02-23 22:35:00,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 14 states have internal predecessors, (32), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 8 states have call predecessors, (17), 6 states have call successors, (17) [2022-02-23 22:35:00,411 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 114 transitions. [2022-02-23 22:35:00,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-02-23 22:35:00,412 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 22:35:00,412 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 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, 1] [2022-02-23 22:35:00,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-23 22:35:00,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 22:35:00,628 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 22:35:00,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 22:35:00,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1746772058, now seen corresponding path program 1 times [2022-02-23 22:35:00,628 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 22:35:00,628 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579590866] [2022-02-23 22:35:00,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:35:00,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 22:35:00,637 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 22:35:00,638 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2021640941] [2022-02-23 22:35:00,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:35:00,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 22:35:00,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 22:35:00,655 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) [2022-02-23 22:35:00,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-23 22:35:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:35:00,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-23 22:35:00,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 22:35:00,984 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 27 proven. 8 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-02-23 22:35:00,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 22:35:01,205 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-02-23 22:35:01,205 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 22:35:01,205 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579590866] [2022-02-23 22:35:01,205 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 22:35:01,205 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021640941] [2022-02-23 22:35:01,205 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021640941] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 22:35:01,205 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-23 22:35:01,205 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 15 [2022-02-23 22:35:01,206 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946909648] [2022-02-23 22:35:01,206 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-23 22:35:01,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-23 22:35:01,206 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 22:35:01,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-23 22:35:01,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-02-23 22:35:01,207 INFO L87 Difference]: Start difference. First operand 96 states and 114 transitions. Second operand has 15 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 11 states have internal predecessors, (30), 7 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 5 states have call successors, (16) [2022-02-23 22:35:01,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 22:35:01,693 INFO L93 Difference]: Finished difference Result 133 states and 166 transitions. [2022-02-23 22:35:01,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-23 22:35:01,694 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 11 states have internal predecessors, (30), 7 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 5 states have call successors, (16) Word has length 61 [2022-02-23 22:35:01,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 22:35:01,695 INFO L225 Difference]: With dead ends: 133 [2022-02-23 22:35:01,695 INFO L226 Difference]: Without dead ends: 122 [2022-02-23 22:35:01,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 106 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-02-23 22:35:01,696 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 38 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-23 22:35:01,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 235 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-23 22:35:01,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-02-23 22:35:01,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 107. [2022-02-23 22:35:01,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 65 states have (on average 1.0923076923076922) internal successors, (71), 68 states have internal predecessors, (71), 25 states have call successors, (25), 17 states have call predecessors, (25), 16 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2022-02-23 22:35:01,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 119 transitions. [2022-02-23 22:35:01,706 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 119 transitions. Word has length 61 [2022-02-23 22:35:01,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 22:35:01,707 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 119 transitions. [2022-02-23 22:35:01,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 11 states have internal predecessors, (30), 7 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 5 states have call successors, (16) [2022-02-23 22:35:01,707 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 119 transitions. [2022-02-23 22:35:01,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-23 22:35:01,708 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 22:35:01,708 INFO L514 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] [2022-02-23 22:35:01,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-23 22:35:01,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-02-23 22:35:01,925 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 22:35:01,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 22:35:01,926 INFO L85 PathProgramCache]: Analyzing trace with hash -296466288, now seen corresponding path program 1 times [2022-02-23 22:35:01,926 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 22:35:01,926 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034970171] [2022-02-23 22:35:01,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:35:01,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 22:35:01,939 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 22:35:01,939 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [409979753] [2022-02-23 22:35:01,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:35:01,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 22:35:01,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 22:35:01,945 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 22:35:01,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-23 22:35:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:35:01,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-23 22:35:01,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 22:35:02,125 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-02-23 22:35:02,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 22:35:02,262 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-02-23 22:35:02,262 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 22:35:02,263 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034970171] [2022-02-23 22:35:02,263 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 22:35:02,263 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409979753] [2022-02-23 22:35:02,263 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409979753] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 22:35:02,263 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-23 22:35:02,263 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-02-23 22:35:02,263 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303703571] [2022-02-23 22:35:02,263 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-23 22:35:02,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-23 22:35:02,264 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 22:35:02,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-23 22:35:02,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-02-23 22:35:02,264 INFO L87 Difference]: Start difference. First operand 107 states and 119 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 7 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-02-23 22:35:02,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 22:35:02,364 INFO L93 Difference]: Finished difference Result 138 states and 152 transitions. [2022-02-23 22:35:02,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-23 22:35:02,364 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 7 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 69 [2022-02-23 22:35:02,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 22:35:02,365 INFO L225 Difference]: With dead ends: 138 [2022-02-23 22:35:02,365 INFO L226 Difference]: Without dead ends: 86 [2022-02-23 22:35:02,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-02-23 22:35:02,366 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 19 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 22:35:02,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 292 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 22:35:02,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-02-23 22:35:02,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-02-23 22:35:02,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 54 states have internal predecessors, (55), 20 states have call successors, (20), 14 states have call predecessors, (20), 13 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-02-23 22:35:02,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 93 transitions. [2022-02-23 22:35:02,373 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 93 transitions. Word has length 69 [2022-02-23 22:35:02,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 22:35:02,374 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 93 transitions. [2022-02-23 22:35:02,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 7 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-02-23 22:35:02,374 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 93 transitions. [2022-02-23 22:35:02,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-23 22:35:02,375 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 22:35:02,375 INFO L514 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] [2022-02-23 22:35:02,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-23 22:35:02,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-02-23 22:35:02,592 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 22:35:02,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 22:35:02,593 INFO L85 PathProgramCache]: Analyzing trace with hash -392102192, now seen corresponding path program 2 times [2022-02-23 22:35:02,593 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 22:35:02,593 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756168971] [2022-02-23 22:35:02,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:35:02,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 22:35:02,600 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 22:35:02,600 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [155815825] [2022-02-23 22:35:02,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-23 22:35:02,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 22:35:02,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 22:35:02,602 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 22:35:02,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-23 22:35:02,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-23 22:35:02,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 22:35:02,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-23 22:35:02,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 22:35:02,715 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 19 proven. 12 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-02-23 22:35:02,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 22:35:02,817 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 19 proven. 12 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-02-23 22:35:02,818 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 22:35:02,818 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756168971] [2022-02-23 22:35:02,818 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 22:35:02,818 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155815825] [2022-02-23 22:35:02,818 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155815825] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 22:35:02,818 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-23 22:35:02,818 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-02-23 22:35:02,818 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222099155] [2022-02-23 22:35:02,818 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-23 22:35:02,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-23 22:35:02,819 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 22:35:02,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-23 22:35:02,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-02-23 22:35:02,819 INFO L87 Difference]: Start difference. First operand 86 states and 93 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 10 states have internal predecessors, (32), 7 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2022-02-23 22:35:02,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 22:35:02,884 INFO L93 Difference]: Finished difference Result 90 states and 96 transitions. [2022-02-23 22:35:02,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-23 22:35:02,884 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 10 states have internal predecessors, (32), 7 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 69 [2022-02-23 22:35:02,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 22:35:02,884 INFO L225 Difference]: With dead ends: 90 [2022-02-23 22:35:02,884 INFO L226 Difference]: Without dead ends: 0 [2022-02-23 22:35:02,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-02-23 22:35:02,885 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 15 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 22:35:02,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 186 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 22:35:02,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-23 22:35:02,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-23 22:35:02,886 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) [2022-02-23 22:35:02,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-23 22:35:02,886 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69 [2022-02-23 22:35:02,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 22:35:02,886 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-23 22:35:02,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 10 states have internal predecessors, (32), 7 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2022-02-23 22:35:02,887 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-23 22:35:02,887 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-23 22:35:02,889 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-23 22:35:02,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-23 22:35:03,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-02-23 22:35:03,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-02-23 22:35:04,954 INFO L854 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-02-23 22:35:04,954 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-02-23 22:35:04,954 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-02-23 22:35:04,954 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-02-23 22:35:04,954 INFO L861 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-02-23 22:35:04,954 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-02-23 22:35:04,954 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-02-23 22:35:04,954 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-02-23 22:35:04,955 INFO L858 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2022-02-23 22:35:04,955 INFO L858 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2022-02-23 22:35:04,955 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-02-23 22:35:04,955 INFO L861 garLoopResultBuilder]: At program point mainENTRY(lines 18 59) the Hoare annotation is: true [2022-02-23 22:35:04,955 INFO L861 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2022-02-23 22:35:04,955 INFO L858 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-02-23 22:35:04,955 INFO L854 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (and (<= 0 main_~x~0) (<= main_~x~0 2)) [2022-02-23 22:35:04,955 INFO L854 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (and (<= 0 main_~y~0) (<= main_~y~0 2) (<= 0 main_~x~0) (<= main_~x~0 2)) [2022-02-23 22:35:04,955 INFO L854 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (<= 0 main_~y~0) (<= 1 main_~x~0) (<= main_~y~0 2) (<= main_~x~0 2)) [2022-02-23 22:35:04,955 INFO L858 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-02-23 22:35:04,956 INFO L854 garLoopResultBuilder]: At program point L43-2(lines 35 52) the Hoare annotation is: (let ((.cse1 (<= main_~y~0 2)) (.cse2 (= main_~s~0 1)) (.cse7 (= main_~a~0 main_~x~0)) (.cse10 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0)))) (.cse0 (<= 1 main_~x~0)) (.cse3 (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (.cse4 (= main_~b~0 main_~y~0)) (.cse5 (= main_~q~0 0)) (.cse6 (<= 1 main_~y~0)) (.cse8 (<= main_~x~0 2)) (.cse9 (= main_~p~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and .cse10 .cse0 .cse1 .cse2 .cse3 (< main_~a~0 2) (< 0 main_~b~0) .cse6 .cse7 .cse9) (and .cse10 .cse0 .cse3 .cse4 (< 0 main_~a~0) .cse5 .cse6 (< main_~b~0 2) .cse8 .cse9))) [2022-02-23 22:35:04,957 INFO L854 garLoopResultBuilder]: At program point L35-2(lines 35 52) the Hoare annotation is: (let ((.cse0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (let ((.cse1 (<= 1 main_~x~0)) (.cse2 (= main_~s~0 1)) (.cse3 (= main_~a~0 .cse0)) (.cse4 (<= 1 main_~y~0)) (.cse5 (= main_~p~0 1))) (or (and (= main_~b~0 .cse0) (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) .cse1 (<= main_~y~0 2) .cse2 .cse3 .cse4 (= main_~a~0 main_~x~0) .cse5) (and (= main_~b~0 main_~a~0) .cse1 .cse2 .cse3 (= main_~b~0 main_~y~0) (= main_~q~0 0) .cse4 (<= main_~x~0 2) .cse5)))) [2022-02-23 22:35:04,957 INFO L854 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse1 (<= main_~y~0 2)) (.cse2 (= main_~s~0 1)) (.cse7 (= main_~a~0 main_~x~0)) (.cse10 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0)))) (.cse0 (<= 1 main_~x~0)) (.cse3 (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (.cse4 (= main_~b~0 main_~y~0)) (.cse5 (= main_~q~0 0)) (.cse6 (<= 1 main_~y~0)) (.cse8 (<= main_~x~0 2)) (.cse9 (= main_~p~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and .cse10 .cse0 .cse1 .cse2 .cse3 (< main_~a~0 2) (< 0 main_~b~0) .cse6 .cse7 .cse9) (and .cse10 .cse0 .cse3 .cse4 (< 0 main_~a~0) .cse5 .cse6 (< main_~b~0 2) .cse8 .cse9))) [2022-02-23 22:35:04,957 INFO L854 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (let ((.cse1 (<= 1 main_~x~0)) (.cse2 (= main_~s~0 1)) (.cse3 (= main_~a~0 .cse0)) (.cse4 (<= 1 main_~y~0)) (.cse5 (= main_~p~0 1))) (or (and (= main_~b~0 .cse0) (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) .cse1 (<= main_~y~0 2) .cse2 .cse3 .cse4 (= main_~a~0 main_~x~0) .cse5) (and (= main_~b~0 main_~a~0) .cse1 .cse2 .cse3 (= main_~b~0 main_~y~0) (= main_~q~0 0) .cse4 (<= main_~x~0 2) .cse5)))) [2022-02-23 22:35:04,957 INFO L854 garLoopResultBuilder]: At program point L36-1(line 36) the Hoare annotation is: (let ((.cse1 (<= main_~y~0 2)) (.cse2 (= main_~s~0 1)) (.cse7 (= main_~a~0 main_~x~0)) (.cse10 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0)))) (.cse0 (<= 1 main_~x~0)) (.cse3 (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (.cse4 (= main_~b~0 main_~y~0)) (.cse5 (= main_~q~0 0)) (.cse6 (<= 1 main_~y~0)) (.cse8 (<= main_~x~0 2)) (.cse9 (= main_~p~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and .cse10 .cse0 .cse1 .cse2 .cse3 (< main_~a~0 2) (< 0 main_~b~0) .cse6 .cse7 .cse9) (and .cse10 .cse0 .cse3 .cse4 (< 0 main_~a~0) .cse5 .cse6 (< main_~b~0 2) .cse8 .cse9))) [2022-02-23 22:35:04,957 INFO L854 garLoopResultBuilder]: At program point L55(line 55) the Hoare annotation is: (let ((.cse5 (= main_~a~0 main_~x~0)) (.cse1 (<= 1 main_~x~0)) (.cse2 (<= main_~y~0 2)) (.cse3 (= main_~s~0 1)) (.cse7 (= main_~b~0 main_~y~0)) (.cse8 (= main_~q~0 0)) (.cse4 (<= 1 main_~y~0)) (.cse9 (<= main_~x~0 2)) (.cse6 (= main_~p~0 1))) (or (let ((.cse0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (and (= main_~b~0 .cse0) (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) .cse1 .cse2 .cse3 (= main_~a~0 .cse0) .cse4 .cse5 .cse6)) (and (= main_~r~0 0) .cse1 .cse2 .cse3 .cse7 .cse8 .cse4 .cse5 .cse9 .cse6) (and (= main_~b~0 main_~a~0) .cse1 .cse2 .cse3 .cse7 .cse8 .cse4 .cse9 .cse6))) [2022-02-23 22:35:04,957 INFO L854 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse3 (= main_~b~0 main_~y~0)) (.cse4 (= main_~q~0 0)) (.cse6 (<= main_~x~0 2)) (.cse0 (<= 1 main_~x~0)) (.cse8 (<= main_~y~0 2)) (.cse1 (= main_~s~0 1)) (.cse2 (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (.cse5 (<= 1 main_~y~0)) (.cse9 (= main_~a~0 main_~x~0)) (.cse7 (= main_~p~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 (< 0 main_~a~0) .cse4 .cse5 (< main_~b~0 2) .cse6 .cse7) (and .cse0 .cse8 .cse1 .cse2 .cse3 .cse4 .cse5 .cse9 .cse6 .cse7) (and (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) .cse0 .cse8 .cse1 .cse2 (< main_~a~0 2) (< 0 main_~b~0) .cse5 .cse9 .cse7))) [2022-02-23 22:35:04,957 INFO L854 garLoopResultBuilder]: At program point L56(line 56) the Hoare annotation is: (let ((.cse1 (<= 1 main_~x~0)) (.cse2 (<= main_~y~0 2)) (.cse3 (<= 1 main_~y~0)) (.cse4 (<= main_~x~0 2))) (or (let ((.cse0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (and (= main_~b~0 .cse0) (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) .cse1 .cse2 (= main_~a~0 .cse0) .cse3 .cse4)) (and .cse1 .cse2 (= main_~s~0 1) (= main_~b~0 main_~y~0) (= main_~q~0 0) .cse3 .cse4))) [2022-02-23 22:35:04,957 INFO L858 garLoopResultBuilder]: For program point L38(lines 35 52) no Hoare annotation was computed. [2022-02-23 22:35:04,957 INFO L858 garLoopResultBuilder]: For program point L57(line 57) no Hoare annotation was computed. [2022-02-23 22:35:04,957 INFO L858 garLoopResultBuilder]: For program point L43(lines 43 51) no Hoare annotation was computed. [2022-02-23 22:35:04,957 INFO L858 garLoopResultBuilder]: For program point mainFINAL(lines 18 59) no Hoare annotation was computed. [2022-02-23 22:35:04,957 INFO L858 garLoopResultBuilder]: For program point mainEXIT(lines 18 59) no Hoare annotation was computed. [2022-02-23 22:35:04,958 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2022-02-23 22:35:04,958 INFO L858 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2022-02-23 22:35:04,958 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2022-02-23 22:35:04,958 INFO L858 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2022-02-23 22:35:04,958 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-02-23 22:35:04,958 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2022-02-23 22:35:04,969 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 22:35:04,970 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-23 22:35:04,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:35:04 BasicIcfg [2022-02-23 22:35:04,987 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-23 22:35:04,987 INFO L158 Benchmark]: Toolchain (without parser) took 9907.04ms. Allocated memory was 185.6MB in the beginning and 311.4MB in the end (delta: 125.8MB). Free memory was 129.4MB in the beginning and 196.9MB in the end (delta: -67.5MB). Peak memory consumption was 153.7MB. Max. memory is 8.0GB. [2022-02-23 22:35:04,988 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 185.6MB. Free memory is still 145.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-23 22:35:04,988 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.70ms. Allocated memory is still 185.6MB. Free memory was 129.3MB in the beginning and 156.0MB in the end (delta: -26.7MB). Peak memory consumption was 12.8MB. Max. memory is 8.0GB. [2022-02-23 22:35:04,988 INFO L158 Benchmark]: Boogie Preprocessor took 19.77ms. Allocated memory is still 185.6MB. Free memory was 155.9MB in the beginning and 154.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-23 22:35:04,988 INFO L158 Benchmark]: RCFGBuilder took 204.35ms. Allocated memory is still 185.6MB. Free memory was 154.4MB in the beginning and 143.5MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-23 22:35:04,988 INFO L158 Benchmark]: IcfgTransformer took 41.01ms. Allocated memory is still 185.6MB. Free memory was 143.5MB in the beginning and 142.3MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-23 22:35:04,988 INFO L158 Benchmark]: TraceAbstraction took 9438.66ms. Allocated memory was 185.6MB in the beginning and 311.4MB in the end (delta: 125.8MB). Free memory was 141.8MB in the beginning and 196.9MB in the end (delta: -55.1MB). Peak memory consumption was 165.0MB. Max. memory is 8.0GB. [2022-02-23 22:35:04,989 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 185.6MB. Free memory is still 145.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 198.70ms. Allocated memory is still 185.6MB. Free memory was 129.3MB in the beginning and 156.0MB in the end (delta: -26.7MB). Peak memory consumption was 12.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.77ms. Allocated memory is still 185.6MB. Free memory was 155.9MB in the beginning and 154.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 204.35ms. Allocated memory is still 185.6MB. Free memory was 154.4MB in the beginning and 143.5MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 41.01ms. Allocated memory is still 185.6MB. Free memory was 143.5MB in the beginning and 142.3MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 9438.66ms. Allocated memory was 185.6MB in the beginning and 311.4MB in the end (delta: 125.8MB). Free memory was 141.8MB in the beginning and 196.9MB in the end (delta: -55.1MB). Peak memory consumption was 165.0MB. 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: 9.4s, OverallIterations: 11, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.9s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 297 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 233 mSDsluCounter, 2047 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1652 mSDsCounter, 256 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1386 IncrementalHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 256 mSolverCounterUnsat, 395 mSDtfsCounter, 1386 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 869 GetRequests, 750 SyntacticMatches, 6 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107occurred in iteration=9, InterpolantAutomatonStates: 95, 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, 11 MinimizatonAttempts, 40 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 69 PreInvPairs, 101 NumberOfFragments, 867 HoareAnnotationTreeSize, 69 FomulaSimplifications, 578 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 18 FomulaSimplificationsInter, 2458 FormulaSimplificationTreeSizeReductionInter, 1.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 556 NumberOfCodeBlocks, 556 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 849 ConstructedInterpolants, 0 QuantifiedInterpolants, 2629 SizeOfPredicates, 38 NumberOfNonLiveVariables, 1423 ConjunctsInSsa, 187 ConjunctsInUnsatCore, 16 InterpolantComputations, 6 PerfectInterpolantSequences, 908/1002 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: ((((((((((1 <= x && y <= 2) && s == 1) && a == y * r + p * x) && b == y) && q == 0) && 1 <= y) && a == x) && x <= 2) && p == 1) || (((((((((b == q * x + y * s && 1 <= x) && y <= 2) && s == 1) && a == y * r + p * x) && a < 2) && 0 < b) && 1 <= y) && a == x) && p == 1)) || (((((((((b == q * x + y * s && 1 <= x) && a == y * r + p * x) && b == y) && 0 < a) && q == 0) && 1 <= y) && b < 2) && x <= 2) && p == 1) RESULT: Ultimate proved your program to be correct! [2022-02-23 22:35:05,005 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...