/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=5000 --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-invgen/nested9.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:30:35,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:30:35,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:30:35,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:30:35,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:30:35,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:30:35,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:30:35,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:30:35,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:30:35,642 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:30:35,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:30:35,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:30:35,648 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:30:35,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:30:35,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:30:35,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:30:35,653 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:30:35,654 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:30:35,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:30:35,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:30:35,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:30:35,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:30:35,669 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:30:35,670 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:30:35,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:30:35,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:30:35,676 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:30:35,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:30:35,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:30:35,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:30:35,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:30:35,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:30:35,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:30:35,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:30:35,685 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:30:35,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:30:35,686 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:30:35,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:30:35,687 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:30:35,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:30:35,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:30:35,691 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 18:30:35,740 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:30:35,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:30:35,742 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:30:35,743 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:30:35,743 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:30:35,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:30:35,744 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:30:35,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:30:35,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:30:35,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:30:35,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:30:35,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:30:35,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:30:35,746 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:30:35,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:30:35,747 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:30:35,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:30:35,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:30:35,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:30:35,748 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:30:35,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:30:35,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:30:35,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:30:35,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:30:35,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:30:35,749 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:30:35,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:30:35,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:30:35,750 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:30:35,750 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=5000;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=5000;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=5000;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=5000;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=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:30:36,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:30:36,243 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:30:36,247 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:30:36,251 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:30:36,251 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:30:36,252 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested9.i [2020-09-24 18:30:36,346 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e4060d40/e48399fdf24a4cca9eb030ec1fa65f57/FLAG2a9ce8ea6 [2020-09-24 18:30:36,886 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:30:36,887 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/nested9.i [2020-09-24 18:30:36,896 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e4060d40/e48399fdf24a4cca9eb030ec1fa65f57/FLAG2a9ce8ea6 [2020-09-24 18:30:37,231 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e4060d40/e48399fdf24a4cca9eb030ec1fa65f57 [2020-09-24 18:30:37,244 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:30:37,248 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:30:37,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:30:37,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:30:37,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:30:37,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:30:37" (1/1) ... [2020-09-24 18:30:37,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@87e4b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:37, skipping insertion in model container [2020-09-24 18:30:37,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:30:37" (1/1) ... [2020-09-24 18:30:37,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:30:37,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:30:37,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:30:37,523 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:30:37,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:30:37,567 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:30:37,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:37 WrapperNode [2020-09-24 18:30:37,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:30:37,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:30:37,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:30:37,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:30:37,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:37" (1/1) ... [2020-09-24 18:30:37,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:37" (1/1) ... [2020-09-24 18:30:37,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:37" (1/1) ... [2020-09-24 18:30:37,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:37" (1/1) ... [2020-09-24 18:30:37,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:37" (1/1) ... [2020-09-24 18:30:37,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:37" (1/1) ... [2020-09-24 18:30:37,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:37" (1/1) ... [2020-09-24 18:30:37,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:30:37,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:30:37,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:30:37,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:30:37,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:37" (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 18:30:37,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:30:37,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:30:37,788 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 18:30:37,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 18:30:37,788 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:30:37,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:30:37,790 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 18:30:37,790 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 18:30:37,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 18:30:37,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:30:37,792 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:30:37,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:30:37,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:30:38,136 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:30:38,136 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-24 18:30:38,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:30:38 BoogieIcfgContainer [2020-09-24 18:30:38,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:30:38,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:30:38,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:30:38,147 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:30:38,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:30:37" (1/3) ... [2020-09-24 18:30:38,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68adc1fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:30:38, skipping insertion in model container [2020-09-24 18:30:38,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:37" (2/3) ... [2020-09-24 18:30:38,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68adc1fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:30:38, skipping insertion in model container [2020-09-24 18:30:38,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:30:38" (3/3) ... [2020-09-24 18:30:38,152 INFO L109 eAbstractionObserver]: Analyzing ICFG nested9.i [2020-09-24 18:30:38,161 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:30:38,171 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:30:38,194 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:30:38,227 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:30:38,228 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:30:38,228 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:30:38,228 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:30:38,228 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:30:38,228 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:30:38,229 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:30:38,229 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:30:38,255 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-09-24 18:30:38,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 18:30:38,267 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:38,268 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] [2020-09-24 18:30:38,268 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:38,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:38,277 INFO L82 PathProgramCache]: Analyzing trace with hash -980226087, now seen corresponding path program 1 times [2020-09-24 18:30:38,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:38,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952460108] [2020-09-24 18:30:38,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:38,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:38,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:38,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:39,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:39,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:39,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:39,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:39,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:39,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:39,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 18:30:39,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:30:39,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1069 [2020-09-24 18:30:39,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:39,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:30:39,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 18:30:39,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 18:30:39,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:30:39,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:39,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:39,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:39,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 18:30:39,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:39,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:30:39,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:39,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:39,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:39,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:39,634 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 18:30:39,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952460108] [2020-09-24 18:30:39,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:30:39,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:30:39,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610527559] [2020-09-24 18:30:39,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:30:39,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:39,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:30:39,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:30:39,667 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 5 states. [2020-09-24 18:30:39,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:39,965 INFO L93 Difference]: Finished difference Result 88 states and 109 transitions. [2020-09-24 18:30:39,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:30:39,967 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-09-24 18:30:39,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:39,980 INFO L225 Difference]: With dead ends: 88 [2020-09-24 18:30:39,980 INFO L226 Difference]: Without dead ends: 51 [2020-09-24 18:30:39,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:30:40,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-24 18:30:40,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-09-24 18:30:40,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-24 18:30:40,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2020-09-24 18:30:40,042 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 34 [2020-09-24 18:30:40,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:40,042 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2020-09-24 18:30:40,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:30:40,043 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2020-09-24 18:30:40,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-24 18:30:40,044 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:40,045 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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 18:30:40,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:30:40,045 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:40,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:40,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1377800797, now seen corresponding path program 1 times [2020-09-24 18:30:40,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:40,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344251610] [2020-09-24 18:30:40,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:40,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:40,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:40,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:40,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:40,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:40,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:40,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:40,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:41,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:41,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:41,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:41,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:41,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 18:30:41,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 18:30:41,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1876 [2020-09-24 18:30:41,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:41,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:30:41,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 18:30:41,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 18:30:41,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:42,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:42,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:42,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:42,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 18:30:42,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:42,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:30:42,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:42,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:42,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:42,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:42,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:30:42,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 18:30:42,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344251610] [2020-09-24 18:30:42,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:30:42,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 18:30:42,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67629785] [2020-09-24 18:30:42,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:30:42,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:42,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:30:42,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:30:42,068 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 8 states. [2020-09-24 18:30:42,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:42,486 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2020-09-24 18:30:42,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 18:30:42,487 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-09-24 18:30:42,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:42,489 INFO L225 Difference]: With dead ends: 68 [2020-09-24 18:30:42,490 INFO L226 Difference]: Without dead ends: 66 [2020-09-24 18:30:42,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-09-24 18:30:42,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-24 18:30:42,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 55. [2020-09-24 18:30:42,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 18:30:42,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2020-09-24 18:30:42,503 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 40 [2020-09-24 18:30:42,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:42,504 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2020-09-24 18:30:42,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:30:42,504 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2020-09-24 18:30:42,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 18:30:42,506 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:42,506 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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 18:30:42,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:30:42,507 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:42,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:42,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1348236411, now seen corresponding path program 1 times [2020-09-24 18:30:42,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:42,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910471850] [2020-09-24 18:30:42,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:42,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:42,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:42,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:42,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:42,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:42,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:43,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:43,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:43,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:43,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:43,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:43,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:43,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:43,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:44,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:44,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:44,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:45,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:46,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:46,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:46,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:47,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:47,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 18:30:47,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-09-24 18:30:47,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 18:30:47,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:47,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:30:47,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 18:30:47,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 18:30:47,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:47,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:47,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:47,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:47,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 18:30:47,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:47,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:30:47,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:47,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:47,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:47,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:47,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:47,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 18:30:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:47,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:47,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:47,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:47,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:47,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:30:47,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:47,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:47,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:47,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:47,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:47,692 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 18:30:47,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910471850] [2020-09-24 18:30:47,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:30:47,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 18:30:47,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106634416] [2020-09-24 18:30:47,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:30:47,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:47,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:30:47,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:30:47,696 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 8 states. [2020-09-24 18:30:47,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:47,968 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2020-09-24 18:30:47,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:30:47,970 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2020-09-24 18:30:47,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:47,971 INFO L225 Difference]: With dead ends: 55 [2020-09-24 18:30:47,971 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 18:30:47,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-09-24 18:30:47,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 18:30:47,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 18:30:47,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 18:30:47,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 18:30:47,975 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2020-09-24 18:30:47,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:47,975 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 18:30:47,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:30:47,975 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 18:30:47,976 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 18:30:47,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:30:47,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 18:30:48,153 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 18:30:48,154 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~__BLAST_NONDET~0 |old(~__BLAST_NONDET~0)|) [2020-09-24 18:30:48,154 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 18:30:48,154 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 18:30:48,154 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 18:30:48,155 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 18:30:48,160 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 18:30:48,161 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-24 18:30:48,161 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-24 18:30:48,161 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-24 18:30:48,161 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-24 18:30:48,161 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-24 18:30:48,162 INFO L271 CegarLoopResult]: At program point L27(lines 14 29) the Hoare annotation is: true [2020-09-24 18:30:48,162 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 29) no Hoare annotation was computed. [2020-09-24 18:30:48,162 INFO L268 CegarLoopResult]: For program point L23-2(lines 23 26) no Hoare annotation was computed. [2020-09-24 18:30:48,162 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-24 18:30:48,162 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 18:30:48,162 INFO L268 CegarLoopResult]: For program point L23-4(line 23) no Hoare annotation was computed. [2020-09-24 18:30:48,162 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-24 18:30:48,163 INFO L264 CegarLoopResult]: At program point L23-5(lines 23 26) the Hoare annotation is: (or (<= 1 main_~n~0) (and (<= main_~i~0 0) (<= 0 main_~i~0))) [2020-09-24 18:30:48,163 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 18:30:48,163 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 18:30:48,163 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-24 18:30:48,163 INFO L268 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-09-24 18:30:48,163 INFO L268 CegarLoopResult]: For program point L15-4(line 15) no Hoare annotation was computed. [2020-09-24 18:30:48,163 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 18:30:48,164 INFO L268 CegarLoopResult]: For program point L24-3(lines 24 26) no Hoare annotation was computed. [2020-09-24 18:30:48,164 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 18:30:48,164 INFO L268 CegarLoopResult]: For program point L24-4(line 24) no Hoare annotation was computed. [2020-09-24 18:30:48,164 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-24 18:30:48,164 INFO L268 CegarLoopResult]: For program point L24-5(line 24) no Hoare annotation was computed. [2020-09-24 18:30:48,164 INFO L264 CegarLoopResult]: At program point L24-6(lines 24 26) the Hoare annotation is: (and (<= 1 main_~n~0) (<= main_~i~0 (+ main_~n~0 1))) [2020-09-24 18:30:48,165 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 18:30:48,165 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-24 18:30:48,165 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-24 18:30:48,165 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 18:30:48,165 INFO L268 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed. [2020-09-24 18:30:48,165 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-24 18:30:48,165 INFO L268 CegarLoopResult]: For program point L25-4(line 25) no Hoare annotation was computed. [2020-09-24 18:30:48,166 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-24 18:30:48,166 INFO L264 CegarLoopResult]: At program point L25-5(lines 25 26) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~j~0 1) (* 3 main_~i~0)) (<= main_~i~0 (+ main_~n~0 1))) [2020-09-24 18:30:48,166 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 18:30:48,166 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-24 18:30:48,166 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-24 18:30:48,166 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 29) no Hoare annotation was computed. [2020-09-24 18:30:48,167 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 29) the Hoare annotation is: true [2020-09-24 18:30:48,167 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (* 3 main_~i~0))) (and (<= 1 main_~n~0) (<= (+ main_~k~0 2) .cse0) (<= (+ main_~j~0 1) .cse0) (<= main_~i~0 (+ main_~n~0 1)))) [2020-09-24 18:30:48,167 INFO L268 CegarLoopResult]: For program point L26-1(lines 25 26) no Hoare annotation was computed. [2020-09-24 18:30:48,167 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 18:30:48,167 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-09-24 18:30:48,167 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 18:30:48,168 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-24 18:30:48,168 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-24 18:30:48,168 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-24 18:30:48,168 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-24 18:30:48,168 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 18:30:48,168 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-24 18:30:48,169 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-24 18:30:48,169 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-24 18:30:48,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:30:48 BoogieIcfgContainer [2020-09-24 18:30:48,191 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 18:30:48,195 INFO L168 Benchmark]: Toolchain (without parser) took 10947.88 ms. Allocated memory was 147.8 MB in the beginning and 285.2 MB in the end (delta: 137.4 MB). Free memory was 104.6 MB in the beginning and 242.9 MB in the end (delta: -138.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 18:30:48,196 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 18:30:48,197 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.25 ms. Allocated memory is still 147.8 MB. Free memory was 104.0 MB in the beginning and 94.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-24 18:30:48,198 INFO L168 Benchmark]: Boogie Preprocessor took 125.74 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 94.4 MB in the beginning and 183.8 MB in the end (delta: -89.4 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-09-24 18:30:48,199 INFO L168 Benchmark]: RCFGBuilder took 447.36 ms. Allocated memory is still 203.9 MB. Free memory was 183.8 MB in the beginning and 165.8 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2020-09-24 18:30:48,200 INFO L168 Benchmark]: TraceAbstraction took 10048.30 ms. Allocated memory was 203.9 MB in the beginning and 285.2 MB in the end (delta: 81.3 MB). Free memory was 165.2 MB in the beginning and 242.9 MB in the end (delta: -77.7 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. [2020-09-24 18:30:48,205 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 318.25 ms. Allocated memory is still 147.8 MB. Free memory was 104.0 MB in the beginning and 94.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.74 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 94.4 MB in the beginning and 183.8 MB in the end (delta: -89.4 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 447.36 ms. Allocated memory is still 203.9 MB. Free memory was 183.8 MB in the beginning and 165.8 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10048.30 ms. Allocated memory was 203.9 MB in the beginning and 285.2 MB in the end (delta: 81.3 MB). Free memory was 165.2 MB in the beginning and 242.9 MB in the end (delta: -77.7 MB). Peak memory consumption was 3.6 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: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 <= n && i <= n + 1 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 <= n || (i <= 0 && 0 <= i) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (1 <= n && j + 1 <= 3 * i) && i <= n + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.7s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 130 SDtfs, 215 SDslu, 65 SDs, 0 SdLazy, 446 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 12 PreInvPairs, 22 NumberOfFragments, 67 HoareAnnotationTreeSize, 12 FomulaSimplifications, 100 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 31 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 123 NumberOfCodeBlocks, 123 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 12180 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 8/10 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...