/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=SHALLOWEST --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-lit/gj2007b.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:40:52,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:40:52,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:40:52,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:40:52,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:40:52,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:40:52,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:40:52,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:40:52,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:40:52,659 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:40:52,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:40:52,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:40:52,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:40:52,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:40:52,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:40:52,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:40:52,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:40:52,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:40:52,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:40:52,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:40:52,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:40:52,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:40:52,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:40:52,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:40:52,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:40:52,715 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:40:52,715 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:40:52,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:40:52,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:40:52,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:40:52,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:40:52,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:40:52,723 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:40:52,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:40:52,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:40:52,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:40:52,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:40:52,740 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:40:52,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:40:52,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:40:52,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:40:52,751 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 01:40:52,790 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:40:52,790 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:40:52,792 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:40:52,792 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:40:52,792 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:40:52,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:40:52,793 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:40:52,793 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:40:52,793 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:40:52,793 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:40:52,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:40:52,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:40:52,794 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:40:52,794 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:40:52,795 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:40:52,795 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:40:52,795 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:40:52,795 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:40:52,795 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:40:52,796 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:40:52,796 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:40:52,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:40:52,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:40:52,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:40:52,797 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:40:52,797 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:40:52,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:40:52,797 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:40:52,798 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:40:52,798 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:40:53,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:40:53,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:40:53,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:40:53,290 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:40:53,291 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:40:53,292 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007b.i [2020-10-27 01:40:53,376 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75071e1cc/994eca851782450a884526c47dbf70d3/FLAG16bc22905 [2020-10-27 01:40:54,069 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:40:54,069 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/gj2007b.i [2020-10-27 01:40:54,077 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75071e1cc/994eca851782450a884526c47dbf70d3/FLAG16bc22905 [2020-10-27 01:40:54,452 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75071e1cc/994eca851782450a884526c47dbf70d3 [2020-10-27 01:40:54,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:40:54,466 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:40:54,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:40:54,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:40:54,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:40:54,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:40:54" (1/1) ... [2020-10-27 01:40:54,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3376b082 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:54, skipping insertion in model container [2020-10-27 01:40:54,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:40:54" (1/1) ... [2020-10-27 01:40:54,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:40:54,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:40:54,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:40:54,739 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:40:54,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:40:54,777 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:40:54,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:54 WrapperNode [2020-10-27 01:40:54,778 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:40:54,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:40:54,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:40:54,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:40:54,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:54" (1/1) ... [2020-10-27 01:40:54,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:54" (1/1) ... [2020-10-27 01:40:54,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:54" (1/1) ... [2020-10-27 01:40:54,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:54" (1/1) ... [2020-10-27 01:40:54,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:54" (1/1) ... [2020-10-27 01:40:54,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:54" (1/1) ... [2020-10-27 01:40:54,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:54" (1/1) ... [2020-10-27 01:40:54,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:40:54,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:40:54,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:40:54,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:40:54,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:54" (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 01:40:54,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:40:54,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:40:54,912 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:40:54,913 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 01:40:54,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 01:40:54,913 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:40:54,914 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:40:54,914 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:40:54,914 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 01:40:54,914 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 01:40:54,914 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:40:54,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:40:54,915 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 01:40:54,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 01:40:54,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 01:40:54,915 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:40:54,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:40:54,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:40:54,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:40:54,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:40:54,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:40:54,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:40:55,213 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:40:55,214 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 01:40:55,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:40:55 BoogieIcfgContainer [2020-10-27 01:40:55,216 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:40:55,218 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:40:55,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:40:55,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:40:55,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:40:54" (1/3) ... [2020-10-27 01:40:55,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4ad115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:40:55, skipping insertion in model container [2020-10-27 01:40:55,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:54" (2/3) ... [2020-10-27 01:40:55,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4ad115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:40:55, skipping insertion in model container [2020-10-27 01:40:55,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:40:55" (3/3) ... [2020-10-27 01:40:55,227 INFO L111 eAbstractionObserver]: Analyzing ICFG gj2007b.i [2020-10-27 01:40:55,241 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:40:55,247 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:40:55,262 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:40:55,292 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:40:55,292 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:40:55,292 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:40:55,292 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:40:55,293 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:40:55,293 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:40:55,293 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:40:55,293 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:40:55,322 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-27 01:40:55,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-27 01:40:55,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:40:55,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:40:55,332 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:40:55,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:40:55,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1946050314, now seen corresponding path program 1 times [2020-10-27 01:40:55,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:40:55,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146500793] [2020-10-27 01:40:55,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:40:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:40:55,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:55,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:55,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:40:55,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 01:40:55,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:40:55,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-10-27 01:40:55,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:40:55,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:40:55,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:40:55,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:40:55,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:40:56,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:40:56,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:40:56,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:56,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:40:56,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:40:56,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:40:56,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:40:56,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:40:56,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:40:56,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:40:56,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:40:56,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:40:56,121 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 01:40:56,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146500793] [2020-10-27 01:40:56,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:40:56,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:40:56,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095698180] [2020-10-27 01:40:56,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:40:56,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:40:56,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:40:56,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:40:56,164 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 6 states. [2020-10-27 01:40:56,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:40:56,610 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2020-10-27 01:40:56,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 01:40:56,613 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-27 01:40:56,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:40:56,623 INFO L225 Difference]: With dead ends: 54 [2020-10-27 01:40:56,623 INFO L226 Difference]: Without dead ends: 28 [2020-10-27 01:40:56,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-27 01:40:56,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-27 01:40:56,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-27 01:40:56,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-27 01:40:56,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-27 01:40:56,681 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 13 [2020-10-27 01:40:56,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:40:56,682 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-27 01:40:56,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:40:56,682 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-27 01:40:56,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-27 01:40:56,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:40:56,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:40:56,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:40:56,684 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:40:56,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:40:56,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1733037939, now seen corresponding path program 1 times [2020-10-27 01:40:56,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:40:56,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637803945] [2020-10-27 01:40:56,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:40:56,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:40:56,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:56,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:57,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:40:57,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 01:40:57,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:40:57,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-10-27 01:40:57,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:40:57,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:40:57,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:40:57,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:40:57,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:40:57,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:40:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:40:57,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:57,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:40:57,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:40:57,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:40:57,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:40:57,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:40:57,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:40:57,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:40:57,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:40:57,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:40:57,188 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 01:40:57,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637803945] [2020-10-27 01:40:57,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:40:57,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 01:40:57,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666621404] [2020-10-27 01:40:57,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 01:40:57,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:40:57,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 01:40:57,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:40:57,193 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 7 states. [2020-10-27 01:40:57,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:40:57,497 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2020-10-27 01:40:57,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 01:40:57,498 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-10-27 01:40:57,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:40:57,501 INFO L225 Difference]: With dead ends: 35 [2020-10-27 01:40:57,501 INFO L226 Difference]: Without dead ends: 29 [2020-10-27 01:40:57,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-27 01:40:57,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-27 01:40:57,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2020-10-27 01:40:57,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-27 01:40:57,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-10-27 01:40:57,511 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 16 [2020-10-27 01:40:57,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:40:57,511 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-10-27 01:40:57,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 01:40:57,512 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-10-27 01:40:57,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-27 01:40:57,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:40:57,513 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:40:57,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:40:57,513 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:40:57,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:40:57,514 INFO L82 PathProgramCache]: Analyzing trace with hash -387339774, now seen corresponding path program 1 times [2020-10-27 01:40:57,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:40:57,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276364742] [2020-10-27 01:40:57,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:40:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:40:57,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:57,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:40:57,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 01:40:57,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:40:57,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 01:40:57,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:40:57,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:40:57,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:40:57,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 01:40:57,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:40:57,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:40:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:40:57,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:57,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:40:57,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:40:57,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:40:57,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 01:40:57,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:40:57,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:40:57,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:40:57,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:40:57,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:40:57,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 01:40:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:40:57,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:57,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:40:57,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:40:57,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:40:57,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:40:57,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:40:57,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:40:57,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:40:57,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:40:57,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:40:57,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:40:57,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276364742] [2020-10-27 01:40:57,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:40:57,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:40:57,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291424196] [2020-10-27 01:40:57,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:40:57,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:40:57,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:40:57,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:40:57,731 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 6 states. [2020-10-27 01:40:58,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:40:58,047 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2020-10-27 01:40:58,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 01:40:58,048 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-27 01:40:58,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:40:58,049 INFO L225 Difference]: With dead ends: 32 [2020-10-27 01:40:58,050 INFO L226 Difference]: Without dead ends: 24 [2020-10-27 01:40:58,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-27 01:40:58,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-27 01:40:58,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-27 01:40:58,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-27 01:40:58,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-10-27 01:40:58,058 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 18 [2020-10-27 01:40:58,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:40:58,058 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-10-27 01:40:58,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:40:58,059 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-10-27 01:40:58,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 01:40:58,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:40:58,060 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:40:58,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:40:58,060 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:40:58,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:40:58,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1793318074, now seen corresponding path program 1 times [2020-10-27 01:40:58,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:40:58,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430544330] [2020-10-27 01:40:58,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:40:58,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:40:58,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:58,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:58,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:40:58,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 01:40:58,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:40:58,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-27 01:40:58,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:40:58,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:40:58,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:40:58,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 01:40:58,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 01:40:58,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:40:58,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:40:58,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:58,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:40:58,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:40:58,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:40:58,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:40:58,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:40:58,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:40:58,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:40:58,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:40:58,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 01:40:58,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 01:40:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:40:58,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:58,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:40:58,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:40:58,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:40:58,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:40:58,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:40:58,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:40:58,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:40:58,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:40:58,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:40:58,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:40:58,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430544330] [2020-10-27 01:40:58,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:40:58,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 01:40:58,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709789756] [2020-10-27 01:40:58,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 01:40:58,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:40:58,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 01:40:58,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:40:58,435 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 7 states. [2020-10-27 01:40:58,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:40:58,810 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2020-10-27 01:40:58,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 01:40:58,811 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-27 01:40:58,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:40:58,813 INFO L225 Difference]: With dead ends: 43 [2020-10-27 01:40:58,813 INFO L226 Difference]: Without dead ends: 31 [2020-10-27 01:40:58,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-27 01:40:58,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-27 01:40:58,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2020-10-27 01:40:58,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-27 01:40:58,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-10-27 01:40:58,822 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 21 [2020-10-27 01:40:58,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:40:58,822 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-10-27 01:40:58,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 01:40:58,822 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-10-27 01:40:58,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 01:40:58,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:40:58,823 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:40:58,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 01:40:58,824 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:40:58,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:40:58,824 INFO L82 PathProgramCache]: Analyzing trace with hash 95948546, now seen corresponding path program 2 times [2020-10-27 01:40:58,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:40:58,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536677722] [2020-10-27 01:40:58,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:40:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:40:58,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:58,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:40:58,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 01:40:58,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:40:58,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 01:40:58,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:40:58,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:40:58,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 01:40:58,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 01:40:58,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:40:59,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:40:59,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:40:59,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:59,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:40:59,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:40:59,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:40:59,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:40:59,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:40:59,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:40:59,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:40:59,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:40:59,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:40:59,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 01:40:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:40:59,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:59,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:40:59,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:40:59,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:40:59,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:40:59,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:40:59,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:40:59,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:40:59,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:40:59,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:40:59,061 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 01:40:59,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536677722] [2020-10-27 01:40:59,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:40:59,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 01:40:59,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142809156] [2020-10-27 01:40:59,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 01:40:59,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:40:59,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 01:40:59,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:40:59,065 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 7 states. [2020-10-27 01:40:59,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:40:59,290 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2020-10-27 01:40:59,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 01:40:59,290 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-10-27 01:40:59,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:40:59,291 INFO L225 Difference]: With dead ends: 26 [2020-10-27 01:40:59,291 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 01:40:59,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-27 01:40:59,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 01:40:59,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 01:40:59,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 01:40:59,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 01:40:59,293 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-10-27 01:40:59,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:40:59,293 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 01:40:59,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 01:40:59,293 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 01:40:59,294 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 01:40:59,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 01:40:59,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 01:40:59,747 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-10-27 01:40:59,748 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-27 01:40:59,748 INFO L274 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-10-27 01:40:59,748 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-27 01:40:59,748 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-27 01:40:59,748 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 01:40:59,749 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-27 01:40:59,749 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 01:40:59,749 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 01:40:59,749 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 01:40:59,749 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 01:40:59,749 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 01:40:59,750 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-27 01:40:59,750 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-10-27 01:40:59,750 INFO L274 CegarLoopResult]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2020-10-27 01:40:59,750 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-10-27 01:40:59,750 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 24 37) the Hoare annotation is: true [2020-10-27 01:40:59,750 INFO L274 CegarLoopResult]: For program point L29(lines 29 31) no Hoare annotation was computed. [2020-10-27 01:40:59,750 INFO L274 CegarLoopResult]: For program point L29-2(lines 29 31) no Hoare annotation was computed. [2020-10-27 01:40:59,751 INFO L270 CegarLoopResult]: At program point L28-2(lines 28 33) the Hoare annotation is: (and (<= 0 main_~m~0) (<= 0 main_~x~0) (or (<= main_~n~0 0) (< main_~m~0 main_~n~0))) [2020-10-27 01:40:59,751 INFO L270 CegarLoopResult]: At program point L28-3(lines 28 33) the Hoare annotation is: (and (<= 0 main_~m~0) (<= 0 main_~x~0) (or (<= main_~n~0 0) (< main_~m~0 main_~n~0))) [2020-10-27 01:40:59,751 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 24 37) no Hoare annotation was computed. [2020-10-27 01:40:59,751 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 24 37) no Hoare annotation was computed. [2020-10-27 01:40:59,751 INFO L274 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-10-27 01:40:59,751 INFO L270 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (and (<= 0 main_~m~0) (<= 0 main_~x~0) (or (<= main_~n~0 0) (< main_~m~0 main_~n~0))) [2020-10-27 01:40:59,752 INFO L274 CegarLoopResult]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2020-10-27 01:40:59,752 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-10-27 01:40:59,752 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2020-10-27 01:40:59,752 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-27 01:40:59,752 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-10-27 01:40:59,752 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-10-27 01:40:59,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:40:59 BoogieIcfgContainer [2020-10-27 01:40:59,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:40:59,773 INFO L168 Benchmark]: Toolchain (without parser) took 5311.47 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 126.1 MB in the beginning and 91.3 MB in the end (delta: 34.8 MB). Peak memory consumption was 65.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:40:59,773 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 125.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:40:59,774 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.25 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 116.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:40:59,775 INFO L168 Benchmark]: Boogie Preprocessor took 41.04 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:40:59,776 INFO L168 Benchmark]: RCFGBuilder took 394.97 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 101.2 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:40:59,777 INFO L168 Benchmark]: TraceAbstraction took 4551.37 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 100.7 MB in the beginning and 91.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 40.3 MB. Max. memory is 8.0 GB. [2020-10-27 01:40:59,781 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 125.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 308.25 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 116.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.04 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 394.97 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 101.2 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4551.37 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 100.7 MB in the beginning and 91.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 40.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 28]: Loop Invariant Derived loop invariant: (0 <= m && 0 <= x) && (n <= 0 || m < n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 83 SDtfs, 121 SDslu, 132 SDs, 0 SdLazy, 280 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 14 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 28 PreInvPairs, 36 NumberOfFragments, 75 HoareAnnotationTreeSize, 28 FomulaSimplifications, 314 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 10 FomulaSimplificationsInter, 266 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 5381 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 11/13 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...