/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/loop-lit/hhk2008.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 08:25:32,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 08:25:32,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 08:25:33,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 08:25:33,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 08:25:33,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 08:25:33,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 08:25:33,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 08:25:33,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 08:25:33,024 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 08:25:33,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 08:25:33,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 08:25:33,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 08:25:33,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 08:25:33,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 08:25:33,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 08:25:33,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 08:25:33,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 08:25:33,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 08:25:33,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 08:25:33,031 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 08:25:33,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 08:25:33,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 08:25:33,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 08:25:33,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 08:25:33,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-20 08:25:33,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-20 08:25:33,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-20 08:25:33,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-20 08:25:33,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-20 08:25:33,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-20 08:25:33,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-20 08:25:33,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-20 08:25:33,038 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-20 08:25:33,038 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-20 08:25:33,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-20 08:25:33,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-20 08:25:33,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-20 08:25:33,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-20 08:25:33,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 08:25:33,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 08:25:33,042 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 08:25:33,043 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-20 08:25:33,064 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 08:25:33,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 08:25:33,066 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-20 08:25:33,066 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-20 08:25:33,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-20 08:25:33,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-20 08:25:33,068 INFO L138 SettingsManager]: * Use SBE=true [2022-03-20 08:25:33,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 08:25:33,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 08:25:33,069 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 08:25:33,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 08:25:33,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 08:25:33,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 08:25:33,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 08:25:33,069 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 08:25:33,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 08:25:33,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 08:25:33,070 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 08:25:33,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 08:25:33,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 08:25:33,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 08:25:33,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-20 08:25:33,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-20 08:25:33,071 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 08:25:33,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-20 08:25:33,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 08:25:33,071 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-20 08:25:33,071 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-20 08:25:33,072 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 08:25:33,072 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 08:25:33,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 08:25:33,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 08:25:33,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 08:25:33,292 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 08:25:33,293 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 08:25:33,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/hhk2008.i [2022-03-20 08:25:33,332 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd23245e7/602d4efb57004c2f9a755d471180cf4a/FLAG1f6797404 [2022-03-20 08:25:33,699 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 08:25:33,699 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/hhk2008.i [2022-03-20 08:25:33,704 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd23245e7/602d4efb57004c2f9a755d471180cf4a/FLAG1f6797404 [2022-03-20 08:25:34,130 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd23245e7/602d4efb57004c2f9a755d471180cf4a [2022-03-20 08:25:34,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 08:25:34,133 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 08:25:34,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 08:25:34,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 08:25:34,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 08:25:34,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 08:25:34" (1/1) ... [2022-03-20 08:25:34,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7750cae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:25:34, skipping insertion in model container [2022-03-20 08:25:34,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 08:25:34" (1/1) ... [2022-03-20 08:25:34,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 08:25:34,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 08:25:34,246 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/hhk2008.i[895,908] [2022-03-20 08:25:34,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 08:25:34,260 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 08:25:34,269 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/hhk2008.i[895,908] [2022-03-20 08:25:34,274 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 08:25:34,284 INFO L208 MainTranslator]: Completed translation [2022-03-20 08:25:34,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:25:34 WrapperNode [2022-03-20 08:25:34,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 08:25:34,286 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 08:25:34,286 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 08:25:34,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 08:25:34,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:25:34" (1/1) ... [2022-03-20 08:25:34,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:25:34" (1/1) ... [2022-03-20 08:25:34,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:25:34" (1/1) ... [2022-03-20 08:25:34,298 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:25:34" (1/1) ... [2022-03-20 08:25:34,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:25:34" (1/1) ... [2022-03-20 08:25:34,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:25:34" (1/1) ... [2022-03-20 08:25:34,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:25:34" (1/1) ... [2022-03-20 08:25:34,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 08:25:34,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 08:25:34,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 08:25:34,319 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 08:25:34,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:25:34" (1/1) ... [2022-03-20 08:25:34,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 08:25:34,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:25:34,343 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-20 08:25:34,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-20 08:25:34,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 08:25:34,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 08:25:34,392 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 08:25:34,392 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-20 08:25:34,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 08:25:34,392 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 08:25:34,393 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 08:25:34,393 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 08:25:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-20 08:25:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-20 08:25:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 08:25:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 08:25:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-20 08:25:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 08:25:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 08:25:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 08:25:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 08:25:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 08:25:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 08:25:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 08:25:34,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 08:25:34,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 08:25:34,456 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 08:25:34,457 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 08:25:34,573 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 08:25:34,577 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 08:25:34,577 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 08:25:34,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:25:34 BoogieIcfgContainer [2022-03-20 08:25:34,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 08:25:34,579 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 08:25:34,579 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 08:25:34,579 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 08:25:34,581 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:25:34" (1/1) ... [2022-03-20 08:25:34,583 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-03-20 08:25:34,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 08:25:34 BasicIcfg [2022-03-20 08:25:34,780 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 08:25:34,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 08:25:34,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 08:25:34,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 08:25:34,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 08:25:34" (1/4) ... [2022-03-20 08:25:34,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13be1796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 08:25:34, skipping insertion in model container [2022-03-20 08:25:34,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:25:34" (2/4) ... [2022-03-20 08:25:34,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13be1796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 08:25:34, skipping insertion in model container [2022-03-20 08:25:34,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:25:34" (3/4) ... [2022-03-20 08:25:34,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13be1796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 08:25:34, skipping insertion in model container [2022-03-20 08:25:34,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 08:25:34" (4/4) ... [2022-03-20 08:25:34,785 INFO L111 eAbstractionObserver]: Analyzing ICFG hhk2008.iqvasr [2022-03-20 08:25:34,788 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-20 08:25:34,788 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 08:25:34,861 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 08:25:34,865 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-20 08:25:34,865 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 08:25:34,894 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-20 08:25:34,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-20 08:25:34,897 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:25:34,897 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:25:34,898 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:25:34,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:25:34,901 INFO L85 PathProgramCache]: Analyzing trace with hash 96256690, now seen corresponding path program 1 times [2022-03-20 08:25:34,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:25:34,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832642989] [2022-03-20 08:25:34,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:25:34,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:25:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:35,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:25:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:35,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:25:35,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:25:35,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832642989] [2022-03-20 08:25:35,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832642989] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 08:25:35,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 08:25:35,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 08:25:35,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957028086] [2022-03-20 08:25:35,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:25:35,052 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 08:25:35,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:25:35,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 08:25:35,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 08:25:35,078 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:25:35,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:25:35,108 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2022-03-20 08:25:35,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 08:25:35,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-03-20 08:25:35,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:25:35,123 INFO L225 Difference]: With dead ends: 33 [2022-03-20 08:25:35,123 INFO L226 Difference]: Without dead ends: 14 [2022-03-20 08:25:35,125 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 08:25:35,127 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 14 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 08:25:35,128 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 24 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 08:25:35,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-03-20 08:25:35,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-03-20 08:25:35,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:25:35,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-03-20 08:25:35,159 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 13 [2022-03-20 08:25:35,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:25:35,159 INFO L478 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-03-20 08:25:35,160 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:25:35,160 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-03-20 08:25:35,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-20 08:25:35,161 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:25:35,161 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:25:35,162 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 08:25:35,162 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:25:35,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:25:35,164 INFO L85 PathProgramCache]: Analyzing trace with hash 97180211, now seen corresponding path program 1 times [2022-03-20 08:25:35,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:25:35,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43210659] [2022-03-20 08:25:35,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:25:35,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:25:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:35,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:25:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:35,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:25:35,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:25:35,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43210659] [2022-03-20 08:25:35,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43210659] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 08:25:35,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 08:25:35,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-20 08:25:35,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942737551] [2022-03-20 08:25:35,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:25:35,255 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 08:25:35,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:25:35,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 08:25:35,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-20 08:25:35,256 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:25:35,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:25:35,355 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2022-03-20 08:25:35,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 08:25:35,355 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-03-20 08:25:35,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:25:35,356 INFO L225 Difference]: With dead ends: 20 [2022-03-20 08:25:35,356 INFO L226 Difference]: Without dead ends: 15 [2022-03-20 08:25:35,359 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-03-20 08:25:35,362 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 08:25:35,364 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 33 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 08:25:35,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-03-20 08:25:35,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-03-20 08:25:35,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:25:35,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-03-20 08:25:35,372 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2022-03-20 08:25:35,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:25:35,373 INFO L478 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-03-20 08:25:35,373 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:25:35,373 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-03-20 08:25:35,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-20 08:25:35,373 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:25:35,373 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:25:35,373 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 08:25:35,374 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:25:35,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:25:35,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1255659171, now seen corresponding path program 1 times [2022-03-20 08:25:35,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:25:35,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234942075] [2022-03-20 08:25:35,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:25:35,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:25:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:35,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:25:35,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:35,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:25:35,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:25:35,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234942075] [2022-03-20 08:25:35,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234942075] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:25:35,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523252178] [2022-03-20 08:25:35,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:25:35,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:25:35,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:25:35,494 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 08:25:35,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 08:25:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:35,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-20 08:25:35,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:25:35,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:25:35,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:25:35,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:25:35,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523252178] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:25:35,735 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:25:35,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2022-03-20 08:25:35,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363655130] [2022-03-20 08:25:35,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:25:35,735 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 08:25:35,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:25:35,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 08:25:35,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-20 08:25:35,736 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 10 states have internal predecessors, (18), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:25:35,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:25:35,818 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-03-20 08:25:35,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 08:25:35,819 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.5) internal successors, (18), 10 states have internal predecessors, (18), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-03-20 08:25:35,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:25:35,819 INFO L225 Difference]: With dead ends: 15 [2022-03-20 08:25:35,819 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 08:25:35,820 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-03-20 08:25:35,820 INFO L913 BasicCegarLoop]: 9 mSDtfsCounter, 10 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 08:25:35,821 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 51 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 08:25:35,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 08:25:35,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 08:25:35,821 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) [2022-03-20 08:25:35,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 08:25:35,822 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2022-03-20 08:25:35,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:25:35,822 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 08:25:35,822 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.5) internal successors, (18), 10 states have internal predecessors, (18), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:25:35,823 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 08:25:35,823 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 08:25:35,825 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 08:25:35,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-20 08:25:36,043 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:25:36,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-20 08:25:36,080 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-20 08:25:36,080 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-03-20 08:25:36,080 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-03-20 08:25:36,081 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-20 08:25:36,081 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-20 08:25:36,081 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-03-20 08:25:36,081 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-03-20 08:25:36,081 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 24 38) the Hoare annotation is: true [2022-03-20 08:25:36,081 INFO L882 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2022-03-20 08:25:36,081 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 24 38) no Hoare annotation was computed. [2022-03-20 08:25:36,081 INFO L882 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2022-03-20 08:25:36,082 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 24 38) no Hoare annotation was computed. [2022-03-20 08:25:36,082 INFO L878 garLoopResultBuilder]: At program point L32-2(lines 32 35) the Hoare annotation is: (and (= (+ main_~cnt~0 main_~res~0) (+ main_~b~0 main_~a~0)) (< 0 (+ main_~cnt~0 1))) [2022-03-20 08:25:36,082 INFO L878 garLoopResultBuilder]: At program point L32-3(lines 32 35) the Hoare annotation is: (and (< main_~res~0 (+ main_~b~0 main_~a~0 1)) (<= (+ main_~b~0 main_~a~0) main_~res~0)) [2022-03-20 08:25:36,082 INFO L882 garLoopResultBuilder]: For program point L36(line 36) no Hoare annotation was computed. [2022-03-20 08:25:36,082 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2022-03-20 08:25:36,082 INFO L882 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2022-03-20 08:25:36,082 INFO L882 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2022-03-20 08:25:36,082 INFO L882 garLoopResultBuilder]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2022-03-20 08:25:36,082 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2022-03-20 08:25:36,082 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2022-03-20 08:25:36,086 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-03-20 08:25:36,087 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 08:25:36,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 08:25:36 BasicIcfg [2022-03-20 08:25:36,099 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 08:25:36,099 INFO L158 Benchmark]: Toolchain (without parser) took 1966.19ms. Allocated memory was 232.8MB in the beginning and 316.7MB in the end (delta: 83.9MB). Free memory was 178.4MB in the beginning and 244.6MB in the end (delta: -66.2MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-03-20 08:25:36,100 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 232.8MB. Free memory is still 194.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 08:25:36,100 INFO L158 Benchmark]: CACSL2BoogieTranslator took 151.73ms. Allocated memory is still 232.8MB. Free memory was 178.1MB in the beginning and 204.9MB in the end (delta: -26.8MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-03-20 08:25:36,100 INFO L158 Benchmark]: Boogie Preprocessor took 32.48ms. Allocated memory is still 232.8MB. Free memory was 204.9MB in the beginning and 203.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-20 08:25:36,100 INFO L158 Benchmark]: RCFGBuilder took 258.77ms. Allocated memory is still 232.8MB. Free memory was 203.4MB in the beginning and 193.2MB in the end (delta: 10.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-20 08:25:36,100 INFO L158 Benchmark]: IcfgTransformer took 201.10ms. Allocated memory is still 232.8MB. Free memory was 193.2MB in the beginning and 185.0MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-03-20 08:25:36,100 INFO L158 Benchmark]: TraceAbstraction took 1317.93ms. Allocated memory was 232.8MB in the beginning and 316.7MB in the end (delta: 83.9MB). Free memory was 184.5MB in the beginning and 244.6MB in the end (delta: -60.1MB). Peak memory consumption was 23.6MB. Max. memory is 8.0GB. [2022-03-20 08:25:36,102 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 232.8MB. Free memory is still 194.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 151.73ms. Allocated memory is still 232.8MB. Free memory was 178.1MB in the beginning and 204.9MB in the end (delta: -26.8MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.48ms. Allocated memory is still 232.8MB. Free memory was 204.9MB in the beginning and 203.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 258.77ms. Allocated memory is still 232.8MB. Free memory was 203.4MB in the beginning and 193.2MB in the end (delta: 10.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 201.10ms. Allocated memory is still 232.8MB. Free memory was 193.2MB in the beginning and 185.0MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 1317.93ms. Allocated memory was 232.8MB in the beginning and 316.7MB in the end (delta: 83.9MB). Free memory was 184.5MB in the beginning and 244.6MB in the end (delta: -60.1MB). Peak memory consumption was 23.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: 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 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 37 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36 mSDsluCounter, 108 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 67 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 88 IncrementalHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 41 mSDtfsCounter, 88 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 12 NumberOfFragments, 36 HoareAnnotationTreeSize, 9 FomulaSimplifications, 14 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 42 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 245 SizeOfPredicates, 2 NumberOfNonLiveVariables, 64 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/3 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: 32]: Loop Invariant Derived loop invariant: cnt + res == b + a && 0 < cnt + 1 RESULT: Ultimate proved your program to be correct! [2022-03-20 08:25:36,132 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...