/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:23:35,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:23:35,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:23:35,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:23:35,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:23:35,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:23:35,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:23:35,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:23:35,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:23:35,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:23:35,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:23:35,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:23:35,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:23:35,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:23:35,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:23:35,598 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:23:35,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:23:35,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:23:35,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:23:35,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:23:35,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:23:35,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:23:35,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:23:35,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:23:35,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:23:35,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:23:35,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:23:35,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:23:35,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:23:35,639 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:23:35,639 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:23:35,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:23:35,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:23:35,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:23:35,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:23:35,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:23:35,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:23:35,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:23:35,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:23:35,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:23:35,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:23:35,650 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 [2020-09-24 19:23:35,696 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:23:35,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:23:35,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:23:35,699 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:23:35,699 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:23:35,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:23:35,699 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:23:35,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:23:35,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:23:35,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:23:35,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:23:35,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:23:35,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:23:35,702 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:23:35,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:23:35,702 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:23:35,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:23:35,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:23:35,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:23:35,703 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:23:35,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:23:35,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:23:35,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:23:35,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:23:35,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:23:35,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:23:35,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:23:35,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:23:35,705 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:23:35,705 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:23:36,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:23:36,207 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:23:36,211 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:23:36,213 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:23:36,213 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:23:36,215 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test10.c [2020-09-24 19:23:36,292 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32b007758/93fe4ded762e41eab5ae550c83201c2e/FLAG266a3cf6e [2020-09-24 19:23:36,853 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:23:36,853 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test10.c [2020-09-24 19:23:36,862 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32b007758/93fe4ded762e41eab5ae550c83201c2e/FLAG266a3cf6e [2020-09-24 19:23:37,174 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32b007758/93fe4ded762e41eab5ae550c83201c2e [2020-09-24 19:23:37,190 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:23:37,198 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:23:37,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:23:37,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:23:37,204 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:23:37,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:23:37" (1/1) ... [2020-09-24 19:23:37,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:23:37, skipping insertion in model container [2020-09-24 19:23:37,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:23:37" (1/1) ... [2020-09-24 19:23:37,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:23:37,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:23:37,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:23:37,486 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:23:37,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:23:37,539 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:23:37,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:23:37 WrapperNode [2020-09-24 19:23:37,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:23:37,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:23:37,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:23:37,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:23:37,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:23:37" (1/1) ... [2020-09-24 19:23:37,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:23:37" (1/1) ... [2020-09-24 19:23:37,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:23:37" (1/1) ... [2020-09-24 19:23:37,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:23:37" (1/1) ... [2020-09-24 19:23:37,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:23:37" (1/1) ... [2020-09-24 19:23:37,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:23:37" (1/1) ... [2020-09-24 19:23:37,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:23:37" (1/1) ... [2020-09-24 19:23:37,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:23:37,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:23:37,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:23:37,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:23:37,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:23:37" (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 [2020-09-24 19:23:37,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:23:37,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:23:37,730 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-09-24 19:23:37,730 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:23:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:23:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:23:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-09-24 19:23:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 19:23:37,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 19:23:37,731 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:23:37,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 19:23:37,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 19:23:37,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:23:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 19:23:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 19:23:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-24 19:23:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:23:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 19:23:38,169 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:23:38,170 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 19:23:38,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:23:38 BoogieIcfgContainer [2020-09-24 19:23:38,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:23:38,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:23:38,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:23:38,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:23:38,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:23:37" (1/3) ... [2020-09-24 19:23:38,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7289f568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:23:38, skipping insertion in model container [2020-09-24 19:23:38,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:23:37" (2/3) ... [2020-09-24 19:23:38,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7289f568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:23:38, skipping insertion in model container [2020-09-24 19:23:38,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:23:38" (3/3) ... [2020-09-24 19:23:38,186 INFO L109 eAbstractionObserver]: Analyzing ICFG test10.c [2020-09-24 19:23:38,198 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:23:38,209 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:23:38,233 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:23:38,265 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:23:38,266 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:23:38,266 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:23:38,266 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:23:38,266 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:23:38,266 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:23:38,266 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:23:38,266 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:23:38,289 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-09-24 19:23:38,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-24 19:23:38,299 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:23:38,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:23:38,300 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:23:38,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:23:38,307 INFO L82 PathProgramCache]: Analyzing trace with hash -424687121, now seen corresponding path program 1 times [2020-09-24 19:23:38,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:23:38,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557244405] [2020-09-24 19:23:38,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:23:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:23:38,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:23:39,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:23:39,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 19:23:39,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:23:39,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1223 [2020-09-24 19:23:39,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:23:39,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 19:23:39,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 19:23:39,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 19:23:39,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:23:40,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:23:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:23:40,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:23:40,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:23:40,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 19:23:40,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:23:40,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-24 19:23:40,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:23:40,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:23:40,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:23:40,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 19:23:40,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:23:41,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-24 19:23:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:23:41,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:23:41,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:23:41,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 19:23:41,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:23:41,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-24 19:23:41,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:23:41,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:23:41,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:23:41,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:23:41,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:23:41,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:23:41,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557244405] [2020-09-24 19:23:41,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:23:41,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-09-24 19:23:41,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463896648] [2020-09-24 19:23:41,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-24 19:23:41,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:23:41,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-24 19:23:41,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2020-09-24 19:23:41,445 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 22 states. [2020-09-24 19:23:42,299 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2020-09-24 19:23:42,473 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2020-09-24 19:23:42,648 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2020-09-24 19:23:43,192 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 91 [2020-09-24 19:23:43,597 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 99 [2020-09-24 19:23:43,942 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 102 [2020-09-24 19:23:44,118 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-09-24 19:23:44,292 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2020-09-24 19:23:44,558 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2020-09-24 19:23:44,704 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2020-09-24 19:23:44,872 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2020-09-24 19:23:45,050 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-09-24 19:23:45,257 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2020-09-24 19:23:45,430 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-09-24 19:23:45,602 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-09-24 19:23:45,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:23:45,649 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2020-09-24 19:23:45,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-24 19:23:45,651 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 60 [2020-09-24 19:23:45,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:23:45,664 INFO L225 Difference]: With dead ends: 89 [2020-09-24 19:23:45,664 INFO L226 Difference]: Without dead ends: 63 [2020-09-24 19:23:45,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=409, Invalid=1571, Unknown=0, NotChecked=0, Total=1980 [2020-09-24 19:23:45,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-24 19:23:45,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-09-24 19:23:45,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-24 19:23:45,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 62 transitions. [2020-09-24 19:23:45,719 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 62 transitions. Word has length 60 [2020-09-24 19:23:45,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:23:45,719 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 62 transitions. [2020-09-24 19:23:45,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-24 19:23:45,720 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 62 transitions. [2020-09-24 19:23:45,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-24 19:23:45,722 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:23:45,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:23:45,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:23:45,723 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:23:45,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:23:45,723 INFO L82 PathProgramCache]: Analyzing trace with hash 251788018, now seen corresponding path program 1 times [2020-09-24 19:23:45,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:23:45,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803010868] [2020-09-24 19:23:45,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:23:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:23:45,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:23:46,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:23:46,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 19:23:46,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:23:46,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1018 [2020-09-24 19:23:46,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:23:46,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 19:23:46,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 19:23:46,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-24 19:23:46,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:23:47,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:23:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:23:47,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:23:47,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:23:47,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 19:23:47,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:23:47,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-24 19:23:47,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:23:47,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:23:47,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:23:47,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 19:23:47,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:23:47,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-24 19:23:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:23:47,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:23:47,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:23:47,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 19:23:47,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:23:47,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 19:23:47,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:23:47,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:23:47,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:23:47,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:23:47,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:23:47,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:23:47,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803010868] [2020-09-24 19:23:47,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:23:47,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-09-24 19:23:47,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430093720] [2020-09-24 19:23:47,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-24 19:23:47,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:23:47,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-24 19:23:47,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2020-09-24 19:23:47,793 INFO L87 Difference]: Start difference. First operand 63 states and 62 transitions. Second operand 25 states. [2020-09-24 19:23:49,165 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-09-24 19:23:49,368 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-09-24 19:23:49,558 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-09-24 19:23:50,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:23:50,364 INFO L93 Difference]: Finished difference Result 63 states and 62 transitions. [2020-09-24 19:23:50,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 19:23:50,365 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 62 [2020-09-24 19:23:50,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:23:50,366 INFO L225 Difference]: With dead ends: 63 [2020-09-24 19:23:50,366 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 19:23:50,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=380, Invalid=1690, Unknown=0, NotChecked=0, Total=2070 [2020-09-24 19:23:50,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 19:23:50,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 19:23:50,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 19:23:50,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 19:23:50,370 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2020-09-24 19:23:50,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:23:50,370 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 19:23:50,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-24 19:23:50,370 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 19:23:50,370 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 19:23:50,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:23:50,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 19:23:50,780 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 40 [2020-09-24 19:23:51,099 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 61 [2020-09-24 19:23:51,208 INFO L268 CegarLoopResult]: For program point L5-4(line 5) no Hoare annotation was computed. [2020-09-24 19:23:51,208 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 19:23:51,208 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 19:23:51,208 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 19:23:51,209 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |~#p1~0.base| |old(~#p1~0.base)|) (= |old(~#a~0.offset)| |~#a~0.offset|) (= |old(#length)| |#length|) (= ~pp2~0.base |old(~pp2~0.base)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |old(~pp1~0.base)| ~pp1~0.base) (= |old(~#a~0.base)| |~#a~0.base|) (= |old(~#b~0.offset)| |~#b~0.offset|) (= |old(#valid)| |#valid|) (= |old(#NULL.base)| |#NULL.base|) (= |old(~#p2~0.base)| |~#p2~0.base|) (= |old(~#p2~0.offset)| |~#p2~0.offset|) (= |old(~pp2~0.offset)| ~pp2~0.offset) (= |old(~pp1~0.offset)| ~pp1~0.offset) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#p1~0.offset| |old(~#p1~0.offset)|)) [2020-09-24 19:23:51,209 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-24 19:23:51,210 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-24 19:23:51,210 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-24 19:23:51,210 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-24 19:23:51,210 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-24 19:23:51,211 INFO L268 CegarLoopResult]: For program point L6-2(line 6) no Hoare annotation was computed. [2020-09-24 19:23:51,211 INFO L268 CegarLoopResult]: For program point L5-2(line 5) no Hoare annotation was computed. [2020-09-24 19:23:51,211 INFO L268 CegarLoopResult]: For program point L6-3(line 6) no Hoare annotation was computed. [2020-09-24 19:23:51,211 INFO L268 CegarLoopResult]: For program point L5-3(line 5) no Hoare annotation was computed. [2020-09-24 19:23:51,211 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 19:23:51,212 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-24 19:23:51,212 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-24 19:23:51,212 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-24 19:23:51,212 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-24 19:23:51,213 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-09-24 19:23:51,213 INFO L268 CegarLoopResult]: For program point L10-1(line 10) no Hoare annotation was computed. [2020-09-24 19:23:51,213 INFO L268 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-09-24 19:23:51,213 INFO L268 CegarLoopResult]: For program point fEXIT(lines 9 14) no Hoare annotation was computed. [2020-09-24 19:23:51,214 INFO L264 CegarLoopResult]: At program point fENTRY(lines 9 14) the Hoare annotation is: (or (not (= |~#p1~0.offset| ~pp1~0.offset)) (= |~#b~0.base| |old(~pp2~0.base)|) (not (= (select |#valid| |~#a~0.base|) 1)) (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(~pp2~0.offset)| ~pp2~0.offset) (= |#memory_int| |old(#memory_int)|) (= ~pp2~0.base |old(~pp2~0.base)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) (not (= |~#b~0.base| (select (select |old(#memory_$Pointer$.base)| |old(~pp2~0.base)|) |old(~pp2~0.offset)|))) (= |~#a~0.base| |old(~pp2~0.base)|) (not (= (select (select |old(#memory_$Pointer$.offset)| |~#p2~0.base|) |~#p2~0.offset|) |~#b~0.offset|)) (not (= |~#p1~0.base| ~pp1~0.base)) (not (= (select |#valid| |~#b~0.base|) 1)) (= |~#p2~0.base| |~#a~0.base|) (= |~#b~0.base| |~#a~0.base|) (not (= (select (select |old(#memory_$Pointer$.offset)| |old(~pp2~0.base)|) |old(~pp2~0.offset)|) |~#b~0.offset|)) (= |~#p1~0.base| |~#a~0.base|) (= |~#b~0.base| |~#p2~0.base|) (not (= |~#b~0.base| (select (select |old(#memory_$Pointer$.base)| |~#p2~0.base|) |~#p2~0.offset|))) (= |~#b~0.base| |~#p1~0.base|)) [2020-09-24 19:23:51,214 INFO L268 CegarLoopResult]: For program point fFINAL(lines 9 14) no Hoare annotation was computed. [2020-09-24 19:23:51,214 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 19:23:51,215 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (not (= |~#b~0.base| |~#p1~0.base|)) (= (select |#valid| |~#a~0.base|) 1) (= (select |#valid| |~#b~0.base|) 1) (not (= |~#p2~0.base| |~#a~0.base|)) (not (= |~#b~0.base| |~#p2~0.base|)) (not (= |~#b~0.base| |~#a~0.base|)) (not (= |~#p1~0.base| |~#a~0.base|))) [2020-09-24 19:23:51,215 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 19:23:51,215 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 19:23:51,216 INFO L264 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (= |~#p1~0.base| |~#a~0.base|) (= |~#b~0.base| |~#p2~0.base|) (and (= |~#b~0.base| (select (select |#memory_$Pointer$.base| |~#p2~0.base|) |~#p2~0.offset|)) (not (= |~#b~0.base| ~pp2~0.base)) (= (select (select |#memory_$Pointer$.offset| ~pp2~0.base) ~pp2~0.offset) |~#b~0.offset|) (not (= ~pp2~0.base |~#a~0.base|)) (= |~#p1~0.offset| ~pp1~0.offset) (= |~#p1~0.base| ~pp1~0.base) (= |~#b~0.base| (select (select |#memory_$Pointer$.base| ~pp2~0.base) ~pp2~0.offset)) (= (select (select |#memory_$Pointer$.offset| |~#p2~0.base|) |~#p2~0.offset|) |~#b~0.offset|)) (not (= (select |#valid| |~#b~0.base|) 1)) (= |~#p2~0.base| |~#a~0.base|) (= |~#b~0.base| |~#a~0.base|) (= |~#b~0.base| |~#p1~0.base|)) [2020-09-24 19:23:51,216 INFO L268 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-09-24 19:23:51,227 INFO L268 CegarLoopResult]: For program point L31-2(line 31) no Hoare annotation was computed. [2020-09-24 19:23:51,227 INFO L268 CegarLoopResult]: For program point L31-3(line 31) no Hoare annotation was computed. [2020-09-24 19:23:51,227 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-24 19:23:51,227 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 16 49) no Hoare annotation was computed. [2020-09-24 19:23:51,228 INFO L268 CegarLoopResult]: For program point L48(line 48) no Hoare annotation was computed. [2020-09-24 19:23:51,228 INFO L268 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed. [2020-09-24 19:23:51,228 INFO L268 CegarLoopResult]: For program point L36-1(line 36) no Hoare annotation was computed. [2020-09-24 19:23:51,228 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 19:23:51,228 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 19:23:51,229 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-24 19:23:51,229 INFO L268 CegarLoopResult]: For program point L45(line 45) no Hoare annotation was computed. [2020-09-24 19:23:51,229 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-24 19:23:51,229 INFO L268 CegarLoopResult]: For program point L41-1(line 41) no Hoare annotation was computed. [2020-09-24 19:23:51,229 INFO L268 CegarLoopResult]: For program point L41-2(line 41) no Hoare annotation was computed. [2020-09-24 19:23:51,229 INFO L268 CegarLoopResult]: For program point L41-4(line 41) no Hoare annotation was computed. [2020-09-24 19:23:51,230 INFO L268 CegarLoopResult]: For program point L41-5(line 41) no Hoare annotation was computed. [2020-09-24 19:23:51,230 INFO L268 CegarLoopResult]: For program point L41-6(lines 41 43) no Hoare annotation was computed. [2020-09-24 19:23:51,230 INFO L268 CegarLoopResult]: For program point L41-7(line 41) no Hoare annotation was computed. [2020-09-24 19:23:51,230 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-24 19:23:51,230 INFO L268 CegarLoopResult]: For program point L41-8(line 41) no Hoare annotation was computed. [2020-09-24 19:23:51,230 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-24 19:23:51,231 INFO L268 CegarLoopResult]: For program point L41-9(line 41) no Hoare annotation was computed. [2020-09-24 19:23:51,231 INFO L268 CegarLoopResult]: For program point L41-10(line 41) no Hoare annotation was computed. [2020-09-24 19:23:51,231 INFO L268 CegarLoopResult]: For program point L41-11(line 41) no Hoare annotation was computed. [2020-09-24 19:23:51,231 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-24 19:23:51,231 INFO L268 CegarLoopResult]: For program point L41-12(line 41) no Hoare annotation was computed. [2020-09-24 19:23:51,232 INFO L268 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-09-24 19:23:51,232 INFO L268 CegarLoopResult]: For program point L41-13(line 41) no Hoare annotation was computed. [2020-09-24 19:23:51,232 INFO L268 CegarLoopResult]: For program point L29-2(line 29) no Hoare annotation was computed. [2020-09-24 19:23:51,232 INFO L268 CegarLoopResult]: For program point L41-14(line 41) no Hoare annotation was computed. [2020-09-24 19:23:51,232 INFO L268 CegarLoopResult]: For program point L29-3(line 29) no Hoare annotation was computed. [2020-09-24 19:23:51,232 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-24 19:23:51,233 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 16 49) no Hoare annotation was computed. [2020-09-24 19:23:51,233 INFO L264 CegarLoopResult]: At program point L42(lines 16 49) the Hoare annotation is: (or (= |~#p2~0.base| |~#b~0.base|) (not (= (select |#valid| |~#b~0.base|) 1)) (= |~#a~0.base| |~#p1~0.base|) (= |~#p2~0.base| |~#a~0.base|) (= |~#a~0.base| |~#b~0.base|) (= |~#p1~0.base| |~#b~0.base|) (not (= (select |#valid| |~#a~0.base|) 1))) [2020-09-24 19:23:51,233 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-09-24 19:23:51,233 INFO L268 CegarLoopResult]: For program point L38-1(line 38) no Hoare annotation was computed. [2020-09-24 19:23:51,233 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-24 19:23:51,234 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 47) no Hoare annotation was computed. [2020-09-24 19:23:51,234 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 16 49) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (= |~#p1~0.base| |~#a~0.base|) (= |~#b~0.base| |~#p2~0.base|) (not (= (select |#valid| |~#b~0.base|) 1)) (= |~#p2~0.base| |~#a~0.base|) (= |~#b~0.base| |~#a~0.base|) (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(~pp2~0.offset)| ~pp2~0.offset) (= |#memory_int| |old(#memory_int)|) (= |old(~pp1~0.offset)| ~pp1~0.offset) (= ~pp2~0.base |old(~pp2~0.base)|) (= |old(~pp1~0.base)| ~pp1~0.base) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) (= |~#b~0.base| |~#p1~0.base|)) [2020-09-24 19:23:51,234 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-24 19:23:51,234 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-09-24 19:23:51,235 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-09-24 19:23:51,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:23:51 BoogieIcfgContainer [2020-09-24 19:23:51,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 19:23:51,267 INFO L168 Benchmark]: Toolchain (without parser) took 14074.90 ms. Allocated memory was 108.0 MB in the beginning and 340.3 MB in the end (delta: 232.3 MB). Free memory was 73.4 MB in the beginning and 318.6 MB in the end (delta: -245.2 MB). Peak memory consumption was 217.8 MB. Max. memory is 7.1 GB. [2020-09-24 19:23:51,268 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 108.0 MB. Free memory was 90.7 MB in the beginning and 90.6 MB in the end (delta: 104.9 kB). Peak memory consumption was 104.9 kB. Max. memory is 7.1 GB. [2020-09-24 19:23:51,270 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.28 ms. Allocated memory was 108.0 MB in the beginning and 123.2 MB in the end (delta: 15.2 MB). Free memory was 72.8 MB in the beginning and 99.9 MB in the end (delta: -27.1 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. [2020-09-24 19:23:51,271 INFO L168 Benchmark]: Boogie Preprocessor took 104.98 ms. Allocated memory was 123.2 MB in the beginning and 159.9 MB in the end (delta: 36.7 MB). Free memory was 99.9 MB in the beginning and 145.8 MB in the end (delta: -45.9 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2020-09-24 19:23:51,272 INFO L168 Benchmark]: RCFGBuilder took 529.69 ms. Allocated memory is still 159.9 MB. Free memory was 145.3 MB in the beginning and 122.2 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-09-24 19:23:51,279 INFO L168 Benchmark]: TraceAbstraction took 13086.62 ms. Allocated memory was 159.9 MB in the beginning and 340.3 MB in the end (delta: 180.4 MB). Free memory was 121.7 MB in the beginning and 318.6 MB in the end (delta: -196.8 MB). Peak memory consumption was 214.3 MB. Max. memory is 7.1 GB. [2020-09-24 19:23:51,289 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 108.0 MB. Free memory was 90.7 MB in the beginning and 90.6 MB in the end (delta: 104.9 kB). Peak memory consumption was 104.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 341.28 ms. Allocated memory was 108.0 MB in the beginning and 123.2 MB in the end (delta: 15.2 MB). Free memory was 72.8 MB in the beginning and 99.9 MB in the end (delta: -27.1 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.98 ms. Allocated memory was 123.2 MB in the beginning and 159.9 MB in the end (delta: 36.7 MB). Free memory was 99.9 MB in the beginning and 145.8 MB in the end (delta: -45.9 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 529.69 ms. Allocated memory is still 159.9 MB. Free memory was 145.3 MB in the beginning and 122.2 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13086.62 ms. Allocated memory was 159.9 MB in the beginning and 340.3 MB in the end (delta: 180.4 MB). Free memory was 121.7 MB in the beginning and 318.6 MB in the end (delta: -196.8 MB). Peak memory consumption was 214.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 47]: 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: 16]: Loop Invariant Derived loop invariant: (((((p2 == b || !(\valid[b] == 1)) || a == p1) || p2 == a) || a == b) || p1 == b) || !(\valid[a] == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 6.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 67 SDtfs, 575 SDslu, 340 SDs, 0 SdLazy, 1140 SolverSat, 261 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 320 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 295 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 133851 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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...