/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 --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/loop-lit/cggmp2005b.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:36:21,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:36:21,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:36:21,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:36:21,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:36:21,535 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:36:21,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:36:21,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:36:21,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:36:21,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:36:21,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:36:21,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:36:21,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:36:21,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:36:21,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:36:21,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:36:21,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:36:21,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:36:21,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:36:21,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:36:21,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:36:21,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:36:21,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:36:21,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:36:21,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:36:21,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:36:21,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:36:21,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:36:21,601 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:36:21,602 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:36:21,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:36:21,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:36:21,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:36:21,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:36:21,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:36:21,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:36:21,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:36:21,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:36:21,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:36:21,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:36:21,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:36:21,616 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 [2020-09-21 12:36:21,662 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:36:21,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:36:21,665 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:36:21,665 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:36:21,665 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:36:21,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:36:21,666 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:36:21,666 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:36:21,666 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:36:21,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:36:21,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:36:21,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:36:21,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:36:21,669 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:36:21,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:36:21,669 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:36:21,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:36:21,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:36:21,670 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:36:21,670 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:36:21,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:36:21,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:36:21,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:36:21,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:36:21,671 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:36:21,671 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:36:21,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:36:21,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:36:21,672 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:36:21,672 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.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; [2020-09-21 12:36:22,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:36:22,177 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:36:22,182 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:36:22,183 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:36:22,184 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:36:22,185 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005b.i [2020-09-21 12:36:22,258 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8bd2c6951/ee0210e7aa4d40e08a35a77dac283649/FLAGf750510b5 [2020-09-21 12:36:22,832 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:36:22,833 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/cggmp2005b.i [2020-09-21 12:36:22,841 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8bd2c6951/ee0210e7aa4d40e08a35a77dac283649/FLAGf750510b5 [2020-09-21 12:36:23,110 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8bd2c6951/ee0210e7aa4d40e08a35a77dac283649 [2020-09-21 12:36:23,123 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:36:23,131 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:36:23,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:36:23,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:36:23,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:36:23,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:36:23" (1/1) ... [2020-09-21 12:36:23,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c1aada5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:23, skipping insertion in model container [2020-09-21 12:36:23,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:36:23" (1/1) ... [2020-09-21 12:36:23,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:36:23,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:36:23,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:36:23,390 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:36:23,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:36:23,422 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:36:23,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:23 WrapperNode [2020-09-21 12:36:23,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:36:23,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:36:23,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:36:23,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:36:23,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:23" (1/1) ... [2020-09-21 12:36:23,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:23" (1/1) ... [2020-09-21 12:36:23,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:23" (1/1) ... [2020-09-21 12:36:23,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:23" (1/1) ... [2020-09-21 12:36:23,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:23" (1/1) ... [2020-09-21 12:36:23,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:23" (1/1) ... [2020-09-21 12:36:23,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:23" (1/1) ... [2020-09-21 12:36:23,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:36:23,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:36:23,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:36:23,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:36:23,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:23" (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 [2020-09-21 12:36:23,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:36:23,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:36:23,620 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 12:36:23,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 12:36:23,620 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:36:23,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:36:23,620 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 12:36:23,621 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 12:36:23,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 12:36:23,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:36:23,621 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:36:23,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:36:23,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:36:23,857 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:36:23,857 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-21 12:36:23,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:36:23 BoogieIcfgContainer [2020-09-21 12:36:23,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:36:23,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:36:23,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:36:23,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:36:23,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:36:23" (1/3) ... [2020-09-21 12:36:23,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65a134c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:36:23, skipping insertion in model container [2020-09-21 12:36:23,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:23" (2/3) ... [2020-09-21 12:36:23,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65a134c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:36:23, skipping insertion in model container [2020-09-21 12:36:23,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:36:23" (3/3) ... [2020-09-21 12:36:23,873 INFO L109 eAbstractionObserver]: Analyzing ICFG cggmp2005b.i [2020-09-21 12:36:23,885 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:36:23,895 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:36:23,917 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:36:23,949 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:36:23,949 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:36:23,950 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:36:23,950 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:36:23,950 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:36:23,950 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:36:23,950 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:36:23,950 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:36:23,975 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-09-21 12:36:23,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-21 12:36:23,982 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:23,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:36:23,984 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:23,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:23,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1039733575, now seen corresponding path program 1 times [2020-09-21 12:36:24,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:24,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070588041] [2020-09-21 12:36:24,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:24,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:24,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:24,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:36:24,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:24,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-21 12:36:24,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:24,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:24,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:36:24,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:24,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:36:24,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:36:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:24,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:24,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:24,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:36:24,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:24,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:36:24,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:24,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:24,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:24,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:24,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:36:24,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:36:24,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070588041] [2020-09-21 12:36:24,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:36:24,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-21 12:36:24,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030960778] [2020-09-21 12:36:24,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-21 12:36:24,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:36:24,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-21 12:36:24,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-21 12:36:24,244 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-09-21 12:36:24,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:36:24,272 INFO L93 Difference]: Finished difference Result 37 states and 50 transitions. [2020-09-21 12:36:24,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-21 12:36:24,274 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-09-21 12:36:24,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:36:24,282 INFO L225 Difference]: With dead ends: 37 [2020-09-21 12:36:24,282 INFO L226 Difference]: Without dead ends: 14 [2020-09-21 12:36:24,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-21 12:36:24,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-09-21 12:36:24,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-09-21 12:36:24,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-09-21 12:36:24,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-09-21 12:36:24,332 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2020-09-21 12:36:24,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:36:24,333 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-09-21 12:36:24,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-21 12:36:24,333 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-09-21 12:36:24,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-21 12:36:24,334 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:24,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:36:24,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:36:24,335 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:24,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:24,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1066515684, now seen corresponding path program 1 times [2020-09-21 12:36:24,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:24,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659301411] [2020-09-21 12:36:24,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:24,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:24,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:24,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:36:24,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:24,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-21 12:36:24,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:24,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:36:24,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:36:24,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:36:24,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:24,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:36:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:24,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:24,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:24,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:36:24,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:24,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:36:24,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:24,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:24,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:24,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:24,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:24,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:36:24,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659301411] [2020-09-21 12:36:24,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:36:24,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:36:24,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817408075] [2020-09-21 12:36:24,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:36:24,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:36:24,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:36:24,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:36:24,491 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 3 states. [2020-09-21 12:36:24,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:36:24,590 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2020-09-21 12:36:24,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:36:24,595 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-21 12:36:24,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:36:24,596 INFO L225 Difference]: With dead ends: 20 [2020-09-21 12:36:24,596 INFO L226 Difference]: Without dead ends: 15 [2020-09-21 12:36:24,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:36:24,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-09-21 12:36:24,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-09-21 12:36:24,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-09-21 12:36:24,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-09-21 12:36:24,612 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 10 [2020-09-21 12:36:24,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:36:24,613 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-09-21 12:36:24,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:36:24,613 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-09-21 12:36:24,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 12:36:24,616 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:24,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:36:24,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:36:24,617 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:24,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:24,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1875131310, now seen corresponding path program 1 times [2020-09-21 12:36:24,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:24,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85041449] [2020-09-21 12:36:24,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:24,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:24,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:24,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:24,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:24,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-21 12:36:24,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:36:24,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-09-21 12:36:24,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:24,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:36:24,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:36:24,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:36:24,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:36:24,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:36:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:24,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:24,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:24,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:36:24,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:24,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:36:24,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:24,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:24,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:24,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:24,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:24,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:36:24,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85041449] [2020-09-21 12:36:24,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:36:24,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:36:24,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513394491] [2020-09-21 12:36:24,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:36:24,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:36:24,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:36:24,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:36:24,974 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2020-09-21 12:36:25,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:36:25,001 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2020-09-21 12:36:25,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:36:25,002 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-09-21 12:36:25,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:36:25,003 INFO L225 Difference]: With dead ends: 25 [2020-09-21 12:36:25,003 INFO L226 Difference]: Without dead ends: 16 [2020-09-21 12:36:25,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:36:25,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-09-21 12:36:25,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-09-21 12:36:25,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-09-21 12:36:25,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-09-21 12:36:25,010 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 14 [2020-09-21 12:36:25,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:36:25,010 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-09-21 12:36:25,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:36:25,011 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-09-21 12:36:25,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-21 12:36:25,011 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:25,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:36:25,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:36:25,012 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:25,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:25,013 INFO L82 PathProgramCache]: Analyzing trace with hash -224898986, now seen corresponding path program 1 times [2020-09-21 12:36:25,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:25,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950625563] [2020-09-21 12:36:25,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:25,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:25,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:25,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:25,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:25,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-21 12:36:25,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:36:25,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-09-21 12:36:25,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:25,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:36:25,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:36:25,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:36:25,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:36:25,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:36:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:25,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:25,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:25,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:36:25,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:25,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:36:25,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:25,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:25,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:25,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:25,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:25,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:36:25,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950625563] [2020-09-21 12:36:25,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:36:25,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-21 12:36:25,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467091708] [2020-09-21 12:36:25,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:36:25,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:36:25,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:36:25,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:36:25,284 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 4 states. [2020-09-21 12:36:25,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:36:25,312 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2020-09-21 12:36:25,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:36:25,313 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-09-21 12:36:25,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:36:25,314 INFO L225 Difference]: With dead ends: 25 [2020-09-21 12:36:25,314 INFO L226 Difference]: Without dead ends: 20 [2020-09-21 12:36:25,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:36:25,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-09-21 12:36:25,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-09-21 12:36:25,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-09-21 12:36:25,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2020-09-21 12:36:25,326 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 15 [2020-09-21 12:36:25,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:36:25,326 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2020-09-21 12:36:25,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:36:25,327 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2020-09-21 12:36:25,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 12:36:25,328 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:25,328 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:36:25,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:36:25,328 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:25,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:25,329 INFO L82 PathProgramCache]: Analyzing trace with hash 928062440, now seen corresponding path program 2 times [2020-09-21 12:36:25,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:25,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295563982] [2020-09-21 12:36:25,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:25,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:25,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:25,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:25,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:25,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:25,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:25,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:25,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:36:25,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:36:25,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 539 [2020-09-21 12:36:25,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:25,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:36:25,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:36:25,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:36:25,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:36:25,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:36:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:25,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:25,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:25,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:36:25,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:25,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:36:25,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:25,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:25,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:25,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:25,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:36:25,924 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:36:25,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295563982] [2020-09-21 12:36:25,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:36:25,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:36:25,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446198888] [2020-09-21 12:36:25,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:36:25,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:36:25,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:36:25,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:36:25,927 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 5 states. [2020-09-21 12:36:26,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:36:26,004 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2020-09-21 12:36:26,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:36:26,007 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-21 12:36:26,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:36:26,010 INFO L225 Difference]: With dead ends: 34 [2020-09-21 12:36:26,010 INFO L226 Difference]: Without dead ends: 25 [2020-09-21 12:36:26,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:36:26,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-21 12:36:26,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-09-21 12:36:26,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-21 12:36:26,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2020-09-21 12:36:26,031 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 19 [2020-09-21 12:36:26,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:36:26,031 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2020-09-21 12:36:26,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:36:26,031 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2020-09-21 12:36:26,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-21 12:36:26,035 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:26,035 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:36:26,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:36:26,036 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:26,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:26,036 INFO L82 PathProgramCache]: Analyzing trace with hash 480737116, now seen corresponding path program 3 times [2020-09-21 12:36:26,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:26,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209715719] [2020-09-21 12:36:26,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:26,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:26,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:26,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:26,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:26,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:26,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:26,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:26,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 12:36:26,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:36:26,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 523 [2020-09-21 12:36:26,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:26,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:36:26,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 12:36:26,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:36:26,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:26,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:36:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:26,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:26,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:26,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:36:26,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:26,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:36:26,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:26,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:26,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:26,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:26,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:26,611 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:36:26,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209715719] [2020-09-21 12:36:26,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:36:26,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:36:26,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173943126] [2020-09-21 12:36:26,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:36:26,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:36:26,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:36:26,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:36:26,620 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand 3 states. [2020-09-21 12:36:26,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:36:26,647 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2020-09-21 12:36:26,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:36:26,649 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-09-21 12:36:26,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:36:26,650 INFO L225 Difference]: With dead ends: 34 [2020-09-21 12:36:26,650 INFO L226 Difference]: Without dead ends: 21 [2020-09-21 12:36:26,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:36:26,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-09-21 12:36:26,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-09-21 12:36:26,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-09-21 12:36:26,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2020-09-21 12:36:26,664 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 20 [2020-09-21 12:36:26,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:36:26,667 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2020-09-21 12:36:26,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:36:26,667 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2020-09-21 12:36:26,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-21 12:36:26,668 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:26,668 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:36:26,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:36:26,669 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:26,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:26,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1734889408, now seen corresponding path program 4 times [2020-09-21 12:36:26,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:26,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578036631] [2020-09-21 12:36:26,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:26,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:26,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:26,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:26,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:27,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:27,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 12:36:27,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:36:27,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 522 [2020-09-21 12:36:27,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:27,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:36:27,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:36:27,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 12:36:27,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:36:27,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:36:27,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:27,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:27,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:27,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:36:27,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:27,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:36:27,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:27,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:27,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:27,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:27,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:27,239 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 12:36:27,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578036631] [2020-09-21 12:36:27,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:36:27,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:36:27,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079582084] [2020-09-21 12:36:27,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:36:27,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:36:27,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:36:27,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:36:27,243 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 5 states. [2020-09-21 12:36:27,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:36:27,276 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2020-09-21 12:36:27,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:36:27,277 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-09-21 12:36:27,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:36:27,278 INFO L225 Difference]: With dead ends: 30 [2020-09-21 12:36:27,279 INFO L226 Difference]: Without dead ends: 25 [2020-09-21 12:36:27,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:36:27,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-21 12:36:27,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-09-21 12:36:27,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-21 12:36:27,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-09-21 12:36:27,298 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 20 [2020-09-21 12:36:27,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:36:27,299 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-09-21 12:36:27,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:36:27,299 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-09-21 12:36:27,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-21 12:36:27,300 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:27,304 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:36:27,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:36:27,305 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:27,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:27,305 INFO L82 PathProgramCache]: Analyzing trace with hash 225081042, now seen corresponding path program 5 times [2020-09-21 12:36:27,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:27,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249284644] [2020-09-21 12:36:27,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:27,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:27,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:27,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:27,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:27,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:28,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:28,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 12:36:28,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:36:28,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 776 [2020-09-21 12:36:28,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:28,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:36:28,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-21 12:36:28,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:36:28,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:28,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:36:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:28,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:28,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:28,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:36:28,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:28,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:36:28,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:28,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:28,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:28,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:28,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:28,143 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-21 12:36:28,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249284644] [2020-09-21 12:36:28,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:36:28,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:36:28,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258904993] [2020-09-21 12:36:28,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:36:28,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:36:28,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:36:28,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:36:28,145 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 5 states. [2020-09-21 12:36:28,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:36:28,176 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2020-09-21 12:36:28,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:36:28,176 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-09-21 12:36:28,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:36:28,177 INFO L225 Difference]: With dead ends: 38 [2020-09-21 12:36:28,177 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 12:36:28,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:36:28,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 12:36:28,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 12:36:28,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 12:36:28,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 12:36:28,179 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-09-21 12:36:28,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:36:28,179 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 12:36:28,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:36:28,180 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 12:36:28,180 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 12:36:28,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:36:28,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 12:36:28,412 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-21 12:36:28,412 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 12:36:28,412 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 12:36:28,413 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 12:36:28,413 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 12:36:28,413 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 12:36:28,413 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-21 12:36:28,413 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-21 12:36:28,414 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-09-21 12:36:28,414 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-21 12:36:28,414 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 30) no Hoare annotation was computed. [2020-09-21 12:36:28,414 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 30) no Hoare annotation was computed. [2020-09-21 12:36:28,414 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 30) the Hoare annotation is: true [2020-09-21 12:36:28,414 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-21 12:36:28,415 INFO L264 CegarLoopResult]: At program point L24-2(lines 24 26) the Hoare annotation is: (and (< 19 main_~j~0) (= main_~k~0 4)) [2020-09-21 12:36:28,415 INFO L264 CegarLoopResult]: At program point L24-3(lines 18 27) the Hoare annotation is: (or (and (< 19 main_~j~0) (= main_~k~0 4)) (and (<= (+ main_~j~0 100) main_~i~0) (<= main_~i~0 0))) [2020-09-21 12:36:28,415 INFO L264 CegarLoopResult]: At program point L20-2(lines 20 22) the Hoare annotation is: (or (and (< 19 main_~j~0) (= main_~k~0 4)) (<= main_~i~0 1)) [2020-09-21 12:36:28,415 INFO L268 CegarLoopResult]: For program point L20-3(lines 20 22) no Hoare annotation was computed. [2020-09-21 12:36:28,416 INFO L264 CegarLoopResult]: At program point L18-2(lines 18 27) the Hoare annotation is: (and (< 19 main_~j~0) (= main_~k~0 4)) [2020-09-21 12:36:28,417 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-21 12:36:28,417 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-21 12:36:28,417 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-21 12:36:28,417 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-21 12:36:28,417 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-21 12:36:28,417 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-21 12:36:28,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:36:28 BoogieIcfgContainer [2020-09-21 12:36:28,462 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:36:28,473 INFO L168 Benchmark]: Toolchain (without parser) took 5339.82 ms. Allocated memory was 148.9 MB in the beginning and 242.7 MB in the end (delta: 93.8 MB). Free memory was 103.6 MB in the beginning and 214.5 MB in the end (delta: -110.9 MB). Peak memory consumption was 93.9 MB. Max. memory is 7.1 GB. [2020-09-21 12:36:28,475 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 148.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:36:28,476 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.86 ms. Allocated memory is still 148.9 MB. Free memory was 102.9 MB in the beginning and 93.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:36:28,477 INFO L168 Benchmark]: Boogie Preprocessor took 117.85 ms. Allocated memory was 148.9 MB in the beginning and 205.0 MB in the end (delta: 56.1 MB). Free memory was 93.5 MB in the beginning and 185.0 MB in the end (delta: -91.5 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-09-21 12:36:28,479 INFO L168 Benchmark]: RCFGBuilder took 320.86 ms. Allocated memory is still 205.0 MB. Free memory was 185.0 MB in the beginning and 172.0 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-21 12:36:28,483 INFO L168 Benchmark]: TraceAbstraction took 4598.31 ms. Allocated memory was 205.0 MB in the beginning and 242.7 MB in the end (delta: 37.7 MB). Free memory was 171.4 MB in the beginning and 214.5 MB in the end (delta: -43.1 MB). Peak memory consumption was 105.6 MB. Max. memory is 7.1 GB. [2020-09-21 12:36:28,492 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 148.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 288.86 ms. Allocated memory is still 148.9 MB. Free memory was 102.9 MB in the beginning and 93.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.85 ms. Allocated memory was 148.9 MB in the beginning and 205.0 MB in the end (delta: 56.1 MB). Free memory was 93.5 MB in the beginning and 185.0 MB in the end (delta: -91.5 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 320.86 ms. Allocated memory is still 205.0 MB. Free memory was 185.0 MB in the beginning and 172.0 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4598.31 ms. Allocated memory was 205.0 MB in the beginning and 242.7 MB in the end (delta: 37.7 MB). Free memory was 171.4 MB in the beginning and 214.5 MB in the end (delta: -43.1 MB). Peak memory consumption was 105.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 24]: Loop Invariant Derived loop invariant: 19 < j && k == 4 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (19 < j && k == 4) || i <= 1 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: (19 < j && k == 4) || (j + 100 <= i && i <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 125 SDtfs, 10 SDslu, 165 SDs, 0 SdLazy, 46 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 17 PreInvPairs, 33 NumberOfFragments, 47 HoareAnnotationTreeSize, 17 FomulaSimplifications, 73 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 42 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 3706 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 42/55 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...