/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/loop-acceleration/diamond_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 20:11:53,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 20:11:53,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 20:11:53,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 20:11:53,821 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 20:11:53,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 20:11:53,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 20:11:53,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 20:11:53,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 20:11:53,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 20:11:53,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 20:11:53,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 20:11:53,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 20:11:53,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 20:11:53,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 20:11:53,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 20:11:53,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 20:11:53,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 20:11:53,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 20:11:53,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 20:11:53,879 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 20:11:53,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 20:11:53,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 20:11:53,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 20:11:53,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 20:11:53,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 20:11:53,919 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 20:11:53,921 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 20:11:53,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 20:11:53,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 20:11:53,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 20:11:53,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 20:11:53,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 20:11:53,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 20:11:53,928 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 20:11:53,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 20:11:53,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 20:11:53,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 20:11:53,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 20:11:53,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 20:11:53,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 20:11:53,940 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 20:11:53,993 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 20:11:53,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 20:11:53,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 20:11:53,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 20:11:53,999 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 20:11:53,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 20:11:53,999 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 20:11:53,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 20:11:54,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 20:11:54,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 20:11:54,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 20:11:54,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 20:11:54,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 20:11:54,002 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 20:11:54,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 20:11:54,002 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 20:11:54,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 20:11:54,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 20:11:54,003 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 20:11:54,003 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 20:11:54,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 20:11:54,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:11:54,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 20:11:54,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 20:11:54,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 20:11:54,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 20:11:54,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 20:11:54,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 20:11:54,005 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 20:11:54,005 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 20:11:54,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 20:11:54,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 20:11:54,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 20:11:54,484 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 20:11:54,485 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 20:11:54,486 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/diamond_1-1.c [2020-10-27 20:11:54,567 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1edbee3d4/ffde48ceefe047f89265dc9cce1e72a7/FLAG0eb4b083f [2020-10-27 20:11:55,242 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 20:11:55,243 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/diamond_1-1.c [2020-10-27 20:11:55,250 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1edbee3d4/ffde48ceefe047f89265dc9cce1e72a7/FLAG0eb4b083f [2020-10-27 20:11:55,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1edbee3d4/ffde48ceefe047f89265dc9cce1e72a7 [2020-10-27 20:11:55,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 20:11:55,609 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 20:11:55,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 20:11:55,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 20:11:55,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 20:11:55,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:11:55" (1/1) ... [2020-10-27 20:11:55,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51464909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:11:55, skipping insertion in model container [2020-10-27 20:11:55,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:11:55" (1/1) ... [2020-10-27 20:11:55,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 20:11:55,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 20:11:55,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:11:55,824 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 20:11:55,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:11:55,859 INFO L208 MainTranslator]: Completed translation [2020-10-27 20:11:55,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:11:55 WrapperNode [2020-10-27 20:11:55,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 20:11:55,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 20:11:55,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 20:11:55,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 20:11:55,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:11:55" (1/1) ... [2020-10-27 20:11:55,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:11:55" (1/1) ... [2020-10-27 20:11:55,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:11:55" (1/1) ... [2020-10-27 20:11:55,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:11:55" (1/1) ... [2020-10-27 20:11:55,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:11:55" (1/1) ... [2020-10-27 20:11:55,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:11:55" (1/1) ... [2020-10-27 20:11:55,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:11:55" (1/1) ... [2020-10-27 20:11:55,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 20:11:55,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 20:11:55,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 20:11:55,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 20:11:55,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:11:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:11:55,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 20:11:55,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 20:11:55,979 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 20:11:55,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 20:11:55,979 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 20:11:55,980 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 20:11:55,980 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 20:11:55,980 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 20:11:55,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 20:11:55,980 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-27 20:11:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 20:11:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 20:11:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 20:11:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 20:11:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 20:11:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 20:11:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 20:11:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 20:11:56,365 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 20:11:56,365 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 20:11:56,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:11:56 BoogieIcfgContainer [2020-10-27 20:11:56,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 20:11:56,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 20:11:56,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 20:11:56,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 20:11:56,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:11:55" (1/3) ... [2020-10-27 20:11:56,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24231517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:11:56, skipping insertion in model container [2020-10-27 20:11:56,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:11:55" (2/3) ... [2020-10-27 20:11:56,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24231517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:11:56, skipping insertion in model container [2020-10-27 20:11:56,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:11:56" (3/3) ... [2020-10-27 20:11:56,377 INFO L111 eAbstractionObserver]: Analyzing ICFG diamond_1-1.c [2020-10-27 20:11:56,389 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 20:11:56,395 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 20:11:56,420 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 20:11:56,452 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 20:11:56,452 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 20:11:56,452 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 20:11:56,452 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 20:11:56,452 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 20:11:56,453 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 20:11:56,453 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 20:11:56,453 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 20:11:56,472 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-10-27 20:11:56,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-27 20:11:56,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:11:56,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:11:56,479 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:11:56,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:11:56,487 INFO L82 PathProgramCache]: Analyzing trace with hash -2020849535, now seen corresponding path program 1 times [2020-10-27 20:11:56,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:11:56,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290586684] [2020-10-27 20:11:56,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:11:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:11:56,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:11:56,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:11:56,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 20:11:56,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:11:56,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-27 20:11:56,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:11:56,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:11:56,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:11:56,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:11:56,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 20:11:56,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:11:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:11:56,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:11:56,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:11:56,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:11:56,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:11:56,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 20:11:56,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:11:56,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:11:56,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:11:56,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:11:56,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:11:56,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:11:56,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290586684] [2020-10-27 20:11:56,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:11:56,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 20:11:56,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021373407] [2020-10-27 20:11:56,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 20:11:56,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:11:56,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 20:11:56,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 20:11:56,936 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2020-10-27 20:11:57,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:11:57,020 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2020-10-27 20:11:57,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 20:11:57,023 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-27 20:11:57,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:11:57,032 INFO L225 Difference]: With dead ends: 35 [2020-10-27 20:11:57,032 INFO L226 Difference]: Without dead ends: 14 [2020-10-27 20:11:57,036 INFO L677 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 [2020-10-27 20:11:57,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-27 20:11:57,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-27 20:11:57,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-27 20:11:57,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2020-10-27 20:11:57,081 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2020-10-27 20:11:57,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:11:57,082 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2020-10-27 20:11:57,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 20:11:57,082 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2020-10-27 20:11:57,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-27 20:11:57,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:11:57,083 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:11:57,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 20:11:57,084 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:11:57,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:11:57,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1987826251, now seen corresponding path program 1 times [2020-10-27 20:11:57,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:11:57,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720628821] [2020-10-27 20:11:57,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:11:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:11:57,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:11:57,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:11:57,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 20:11:57,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:11:57,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-27 20:11:57,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:11:57,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:11:57,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:11:57,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:11:57,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:11:57,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:11:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:11:57,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:11:57,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:11:57,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:11:57,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:11:57,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 20:11:57,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:11:57,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:11:57,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:11:57,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:11:57,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:11:57,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:11:57,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720628821] [2020-10-27 20:11:57,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:11:57,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 20:11:57,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4489365] [2020-10-27 20:11:57,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 20:11:57,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:11:57,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 20:11:57,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:11:57,371 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 4 states. [2020-10-27 20:11:57,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:11:57,453 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2020-10-27 20:11:57,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 20:11:57,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-27 20:11:57,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:11:57,457 INFO L225 Difference]: With dead ends: 22 [2020-10-27 20:11:57,457 INFO L226 Difference]: Without dead ends: 16 [2020-10-27 20:11:57,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:11:57,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-27 20:11:57,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-10-27 20:11:57,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-27 20:11:57,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-10-27 20:11:57,468 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2020-10-27 20:11:57,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:11:57,468 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-10-27 20:11:57,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 20:11:57,468 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-10-27 20:11:57,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-27 20:11:57,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:11:57,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:11:57,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 20:11:57,471 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:11:57,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:11:57,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1243554288, now seen corresponding path program 1 times [2020-10-27 20:11:57,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:11:57,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440282463] [2020-10-27 20:11:57,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:11:57,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:11:57,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:11:57,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:11:57,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:11:58,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:11:58,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 20:11:58,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:11:58,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 560 [2020-10-27 20:11:58,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:11:58,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:11:58,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:11:58,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 20:11:58,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:11:58,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:11:58,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:11:58,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:11:58,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:11:58,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:11:58,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:11:58,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:11:58,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:11:58,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:11:58,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:11:58,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:11:58,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:11:58,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:11:58,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440282463] [2020-10-27 20:11:58,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:11:58,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 20:11:58,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145318082] [2020-10-27 20:11:58,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 20:11:58,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:11:58,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 20:11:58,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:11:58,379 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 8 states. [2020-10-27 20:12:02,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:12:02,993 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2020-10-27 20:12:02,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 20:12:02,994 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-10-27 20:12:02,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:12:02,995 INFO L225 Difference]: With dead ends: 28 [2020-10-27 20:12:02,995 INFO L226 Difference]: Without dead ends: 15 [2020-10-27 20:12:02,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-27 20:12:02,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-27 20:12:03,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-27 20:12:03,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-27 20:12:03,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-10-27 20:12:03,003 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 14 [2020-10-27 20:12:03,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:12:03,003 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-10-27 20:12:03,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 20:12:03,004 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-10-27 20:12:03,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-27 20:12:03,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:12:03,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:12:03,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 20:12:03,005 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:12:03,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:12:03,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1276405646, now seen corresponding path program 1 times [2020-10-27 20:12:03,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:12:03,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077519670] [2020-10-27 20:12:03,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:12:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:12:03,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:03,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:03,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:12:03,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 20:12:03,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:12:03,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-27 20:12:03,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:12:03,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:12:03,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:12:03,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 20:12:03,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:12:03,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:12:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:12:03,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:03,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:12:03,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:12:03,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:12:03,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:12:03,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:12:03,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:12:03,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:12:03,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:12:03,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:12:03,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:12:03,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077519670] [2020-10-27 20:12:03,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:12:03,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 20:12:03,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195817077] [2020-10-27 20:12:03,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:12:03,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:12:03,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:12:03,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:12:03,311 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 5 states. [2020-10-27 20:12:03,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:12:03,430 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-10-27 20:12:03,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:12:03,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-27 20:12:03,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:12:03,432 INFO L225 Difference]: With dead ends: 24 [2020-10-27 20:12:03,432 INFO L226 Difference]: Without dead ends: 18 [2020-10-27 20:12:03,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:12:03,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-27 20:12:03,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-10-27 20:12:03,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-27 20:12:03,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-10-27 20:12:03,439 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2020-10-27 20:12:03,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:12:03,439 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-10-27 20:12:03,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:12:03,439 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-10-27 20:12:03,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-27 20:12:03,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:12:03,440 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:12:03,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 20:12:03,441 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:12:03,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:12:03,441 INFO L82 PathProgramCache]: Analyzing trace with hash 501004305, now seen corresponding path program 2 times [2020-10-27 20:12:03,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:12:03,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420584780] [2020-10-27 20:12:03,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:12:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:12:03,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:03,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:03,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:12:03,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 20:12:03,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:12:03,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-27 20:12:03,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:12:03,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:12:03,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:12:03,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 20:12:03,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:12:03,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:12:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:12:03,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:03,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:12:03,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:12:03,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:12:03,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:12:03,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:12:03,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:12:03,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:12:03,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:12:03,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:12:03,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:12:03,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420584780] [2020-10-27 20:12:03,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:12:03,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 20:12:03,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651931699] [2020-10-27 20:12:03,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 20:12:03,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:12:03,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 20:12:03,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:12:03,920 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 8 states. [2020-10-27 20:12:04,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:12:04,144 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-10-27 20:12:04,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 20:12:04,145 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-10-27 20:12:04,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:12:04,145 INFO L225 Difference]: With dead ends: 17 [2020-10-27 20:12:04,146 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 20:12:04,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-27 20:12:04,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 20:12:04,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 20:12:04,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 20:12:04,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 20:12:04,147 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-10-27 20:12:04,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:12:04,147 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 20:12:04,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 20:12:04,148 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 20:12:04,148 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 20:12:04,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 20:12:04,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 20:12:04,409 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 25 [2020-10-27 20:12:04,538 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 37 [2020-10-27 20:12:04,542 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-27 20:12:04,542 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-27 20:12:04,543 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-27 20:12:04,543 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-27 20:12:04,543 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 20:12:04,543 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-27 20:12:04,543 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 20:12:04,543 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 20:12:04,544 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 20:12:04,544 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 20:12:04,544 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 20:12:04,544 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 13 26) the Hoare annotation is: true [2020-10-27 20:12:04,544 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 13 26) no Hoare annotation was computed. [2020-10-27 20:12:04,544 INFO L274 CegarLoopResult]: For program point L18(lines 18 22) no Hoare annotation was computed. [2020-10-27 20:12:04,545 INFO L270 CegarLoopResult]: At program point L18-2(lines 17 23) the Hoare annotation is: (let ((.cse3 (div main_~y~0 2))) (let ((.cse0 (* 2 .cse3)) (.cse1 (* .cse3 2))) (or (and (<= main_~y~0 .cse0) (<= (+ (* 2 (div (+ main_~x~0 (* main_~y~0 (- 1)) .cse1 (- 1)) 2)) 2) main_~x~0)) (and (let ((.cse2 (div main_~x~0 2))) (or (< (+ .cse2 main_~y~0) (+ (* 2147483648 (div main_~x~0 4294967296)) .cse0 51)) (<= (+ (* 2 .cse2) (* 2 main_~y~0)) (+ main_~x~0 (* 4 .cse3) 1)))) (not (= main_~y~0 .cse1)))))) [2020-10-27 20:12:04,545 INFO L270 CegarLoopResult]: At program point L17-2(lines 17 23) the Hoare annotation is: (let ((.cse2 (div main_~y~0 2))) (let ((.cse1 (* .cse2 2)) (.cse0 (* 2 .cse2))) (or (and (<= main_~y~0 .cse0) (<= (+ (* 2 (div (+ main_~x~0 (* main_~y~0 (- 1)) .cse1 (- 1)) 2)) 2) main_~x~0)) (and (not (= main_~y~0 .cse1)) (< (+ (* 2 (div main_~x~0 2)) main_~y~0) (+ main_~x~0 .cse0 1)))))) [2020-10-27 20:12:04,545 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 13 26) no Hoare annotation was computed. [2020-10-27 20:12:04,545 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-10-27 20:12:04,545 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-10-27 20:12:04,546 INFO L270 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2020-10-27 20:12:04,546 INFO L274 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-10-27 20:12:04,546 INFO L274 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-10-27 20:12:04,546 INFO L274 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-10-27 20:12:04,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:12:04 BoogieIcfgContainer [2020-10-27 20:12:04,566 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 20:12:04,568 INFO L168 Benchmark]: Toolchain (without parser) took 8962.69 ms. Allocated memory was 157.3 MB in the beginning and 194.0 MB in the end (delta: 36.7 MB). Free memory was 132.8 MB in the beginning and 104.6 MB in the end (delta: 28.2 MB). Peak memory consumption was 65.8 MB. Max. memory is 8.0 GB. [2020-10-27 20:12:04,569 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 157.3 MB. Free memory is still 130.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 20:12:04,570 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.87 ms. Allocated memory is still 157.3 MB. Free memory was 132.2 MB in the beginning and 123.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 20:12:04,571 INFO L168 Benchmark]: Boogie Preprocessor took 36.39 ms. Allocated memory is still 157.3 MB. Free memory was 122.9 MB in the beginning and 121.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 20:12:04,572 INFO L168 Benchmark]: RCFGBuilder took 468.76 ms. Allocated memory is still 157.3 MB. Free memory was 121.5 MB in the beginning and 108.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-27 20:12:04,573 INFO L168 Benchmark]: TraceAbstraction took 8196.74 ms. Allocated memory was 157.3 MB in the beginning and 194.0 MB in the end (delta: 36.7 MB). Free memory was 108.4 MB in the beginning and 104.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 41.7 MB. Max. memory is 8.0 GB. [2020-10-27 20:12:04,577 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 157.3 MB. Free memory is still 130.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 249.87 ms. Allocated memory is still 157.3 MB. Free memory was 132.2 MB in the beginning and 123.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.39 ms. Allocated memory is still 157.3 MB. Free memory was 122.9 MB in the beginning and 121.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 468.76 ms. Allocated memory is still 157.3 MB. Free memory was 121.5 MB in the beginning and 108.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 8196.74 ms. Allocated memory was 157.3 MB in the beginning and 194.0 MB in the end (delta: 36.7 MB). Free memory was 108.4 MB in the beginning and 104.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 41.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (y <= 2 * (y / 2) && 2 * ((x + y * -1 + y / 2 * 2 + -1) / 2) + 2 <= x) || ((x / 2 + y < 2147483648 * (x / 4294967296) + 2 * (y / 2) + 51 || 2 * (x / 2) + 2 * y <= x + 4 * (y / 2) + 1) && !(y == y / 2 * 2)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.7s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 53 SDslu, 76 SDs, 0 SdLazy, 120 SolverSat, 28 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, 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, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 23 PreInvPairs, 29 NumberOfFragments, 167 HoareAnnotationTreeSize, 23 FomulaSimplifications, 67 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 234 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 6020 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 1/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...