/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:35:32,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:35:32,477 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:35:32,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:35:32,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:35:32,539 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:35:32,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:35:32,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:35:32,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:35:32,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:35:32,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:35:32,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:35:32,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:35:32,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:35:32,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:35:32,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:35:32,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:35:32,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:35:32,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:35:32,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:35:32,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:35:32,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:35:32,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:35:32,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:35:32,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:35:32,585 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:35:32,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:35:32,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:35:32,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:35:32,592 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:35:32,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:35:32,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:35:32,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:35:32,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:35:32,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:35:32,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:35:32,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:35:32,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:35:32,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:35:32,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:35:32,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:35:32,601 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 19:35:32,647 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:35:32,648 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:35:32,650 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:35:32,650 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:35:32,650 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:35:32,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:35:32,651 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:35:32,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:35:32,651 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:35:32,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:35:32,652 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:35:32,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:35:32,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:35:32,653 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:35:32,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:35:32,654 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:35:32,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:35:32,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:35:32,654 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:35:32,655 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:35:32,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:35:32,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:35:32,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:35:32,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:35:32,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:35:32,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:35:32,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:35:32,656 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:35:32,656 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:35:32,657 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:35:33,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:35:33,165 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:35:33,170 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:35:33,173 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:35:33,173 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:35:33,175 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt5.c [2020-09-24 19:35:33,270 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7c94397d/44cef38602b7497bba4a1b4976e21cd7/FLAG98cb9d5cf [2020-09-24 19:35:33,824 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:35:33,825 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/sumt5.c [2020-09-24 19:35:33,834 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7c94397d/44cef38602b7497bba4a1b4976e21cd7/FLAG98cb9d5cf [2020-09-24 19:35:34,169 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7c94397d/44cef38602b7497bba4a1b4976e21cd7 [2020-09-24 19:35:34,182 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:35:34,187 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:35:34,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:35:34,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:35:34,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:35:34,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:35:34" (1/1) ... [2020-09-24 19:35:34,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67fe5b14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:34, skipping insertion in model container [2020-09-24 19:35:34,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:35:34" (1/1) ... [2020-09-24 19:35:34,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:35:34,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:35:34,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:35:34,485 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:35:34,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:35:34,523 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:35:34,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:34 WrapperNode [2020-09-24 19:35:34,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:35:34,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:35:34,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:35:34,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:35:34,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:34" (1/1) ... [2020-09-24 19:35:34,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:34" (1/1) ... [2020-09-24 19:35:34,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:34" (1/1) ... [2020-09-24 19:35:34,550 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:34" (1/1) ... [2020-09-24 19:35:34,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:34" (1/1) ... [2020-09-24 19:35:34,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:34" (1/1) ... [2020-09-24 19:35:34,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:34" (1/1) ... [2020-09-24 19:35:34,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:35:34,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:35:34,652 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:35:34,652 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:35:34,653 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:35:34,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:35:34,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:35:34,739 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 19:35:34,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 19:35:34,739 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:35:34,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:35:34,740 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 19:35:34,740 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 19:35:34,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 19:35:34,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:35:34,740 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:35:34,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:35:34,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:35:35,042 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:35:35,043 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:35:35,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:35:35 BoogieIcfgContainer [2020-09-24 19:35:35,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:35:35,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:35:35,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:35:35,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:35:35,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:35:34" (1/3) ... [2020-09-24 19:35:35,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e81ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:35:35, skipping insertion in model container [2020-09-24 19:35:35,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:34" (2/3) ... [2020-09-24 19:35:35,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e81ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:35:35, skipping insertion in model container [2020-09-24 19:35:35,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:35:35" (3/3) ... [2020-09-24 19:35:35,058 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt5.c [2020-09-24 19:35:35,070 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:35:35,080 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:35:35,104 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:35:35,140 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:35:35,141 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:35:35,141 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:35:35,141 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:35:35,141 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:35:35,141 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:35:35,142 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:35:35,142 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:35:35,163 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-09-24 19:35:35,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-24 19:35:35,171 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:35:35,172 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] [2020-09-24 19:35:35,172 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:35:35,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:35:35,179 INFO L82 PathProgramCache]: Analyzing trace with hash -687260303, now seen corresponding path program 1 times [2020-09-24 19:35:35,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:35:35,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795597264] [2020-09-24 19:35:35,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:35:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:35,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:35,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:35,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:35,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 19:35:35,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:35:35,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 589 [2020-09-24 19:35:35,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:35,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:35,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 19:35:35,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:35,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 19:35:35,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:35:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:35,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:35,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:35,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:35:35,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:35,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:35:35,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:35,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:35,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:35:35,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:35,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:35:36,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:35:36,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795597264] [2020-09-24 19:35:36,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:35:36,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 19:35:36,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811369648] [2020-09-24 19:35:36,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 19:35:36,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:35:36,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 19:35:36,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:35:36,043 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-09-24 19:35:36,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:35:36,155 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2020-09-24 19:35:36,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 19:35:36,157 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-09-24 19:35:36,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:35:36,177 INFO L225 Difference]: With dead ends: 52 [2020-09-24 19:35:36,178 INFO L226 Difference]: Without dead ends: 32 [2020-09-24 19:35:36,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:35:36,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-24 19:35:36,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-09-24 19:35:36,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-24 19:35:36,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-09-24 19:35:36,232 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 21 [2020-09-24 19:35:36,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:35:36,233 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-09-24 19:35:36,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 19:35:36,233 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-09-24 19:35:36,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-24 19:35:36,234 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:35:36,235 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] [2020-09-24 19:35:36,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:35:36,235 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:35:36,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:35:36,236 INFO L82 PathProgramCache]: Analyzing trace with hash -715889454, now seen corresponding path program 1 times [2020-09-24 19:35:36,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:35:36,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475515960] [2020-09-24 19:35:36,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:35:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:36,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:36,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:36,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 19:35:36,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:36,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-24 19:35:36,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:36,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 19:35:36,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 19:35:36,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:35:36,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:35:36,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:35:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:36,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:36,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:36,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:35:36,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:36,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:35:36,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:36,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:36,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:35:36,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:36,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:35:36,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:35:36,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475515960] [2020-09-24 19:35:36,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:35:36,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 19:35:36,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254491779] [2020-09-24 19:35:36,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 19:35:36,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:35:36,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 19:35:36,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:35:36,865 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 11 states. [2020-09-24 19:35:37,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:35:37,457 INFO L93 Difference]: Finished difference Result 91 states and 116 transitions. [2020-09-24 19:35:37,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:35:37,459 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-24 19:35:37,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:35:37,462 INFO L225 Difference]: With dead ends: 91 [2020-09-24 19:35:37,462 INFO L226 Difference]: Without dead ends: 72 [2020-09-24 19:35:37,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-24 19:35:37,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-24 19:35:37,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 34. [2020-09-24 19:35:37,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-24 19:35:37,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-09-24 19:35:37,475 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 21 [2020-09-24 19:35:37,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:35:37,475 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-09-24 19:35:37,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 19:35:37,476 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-09-24 19:35:37,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-24 19:35:37,477 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:35:37,477 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] [2020-09-24 19:35:37,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:35:37,477 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:35:37,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:35:37,478 INFO L82 PathProgramCache]: Analyzing trace with hash -805340680, now seen corresponding path program 1 times [2020-09-24 19:35:37,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:35:37,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170766324] [2020-09-24 19:35:37,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:35:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:37,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:37,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:37,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 19:35:37,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:37,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-09-24 19:35:37,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:37,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 19:35:37,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 19:35:37,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 19:35:37,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:35:38,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:35:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:38,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:38,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:38,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:35:38,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:38,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:35:38,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:38,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:38,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:35:38,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:38,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:35:38,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:35:38,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170766324] [2020-09-24 19:35:38,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:35:38,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 19:35:38,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619871861] [2020-09-24 19:35:38,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 19:35:38,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:35:38,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 19:35:38,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-24 19:35:38,214 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 13 states. [2020-09-24 19:35:41,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:35:41,011 INFO L93 Difference]: Finished difference Result 87 states and 110 transitions. [2020-09-24 19:35:41,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 19:35:41,012 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2020-09-24 19:35:41,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:35:41,014 INFO L225 Difference]: With dead ends: 87 [2020-09-24 19:35:41,014 INFO L226 Difference]: Without dead ends: 82 [2020-09-24 19:35:41,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2020-09-24 19:35:41,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-24 19:35:41,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 37. [2020-09-24 19:35:41,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-24 19:35:41,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-09-24 19:35:41,033 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 25 [2020-09-24 19:35:41,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:35:41,034 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-09-24 19:35:41,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 19:35:41,034 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-09-24 19:35:41,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-24 19:35:41,036 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:35:41,037 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:35:41,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:35:41,037 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:35:41,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:35:41,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1490056162, now seen corresponding path program 2 times [2020-09-24 19:35:41,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:35:41,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423334343] [2020-09-24 19:35:41,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:35:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:41,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:41,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:41,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:41,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:41,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 19:35:41,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:35:41,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 743 [2020-09-24 19:35:41,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:41,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:35:41,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 19:35:41,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 19:35:41,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:35:41,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:35:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:41,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:41,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:41,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:35:41,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:41,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:35:41,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:41,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:41,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:35:41,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:41,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:35:41,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:35:41,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423334343] [2020-09-24 19:35:41,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:35:41,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:35:41,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982314032] [2020-09-24 19:35:41,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:35:41,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:35:41,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:35:41,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:35:41,969 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 5 states. [2020-09-24 19:35:42,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:35:42,192 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2020-09-24 19:35:42,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:35:42,193 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-09-24 19:35:42,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:35:42,194 INFO L225 Difference]: With dead ends: 62 [2020-09-24 19:35:42,195 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 19:35:42,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:35:42,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 19:35:42,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 38. [2020-09-24 19:35:42,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 19:35:42,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-09-24 19:35:42,209 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 29 [2020-09-24 19:35:42,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:35:42,210 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-09-24 19:35:42,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:35:42,211 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-09-24 19:35:42,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 19:35:42,212 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:35:42,213 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] [2020-09-24 19:35:42,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:35:42,214 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:35:42,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:35:42,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1369450661, now seen corresponding path program 1 times [2020-09-24 19:35:42,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:35:42,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2147251828] [2020-09-24 19:35:42,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:35:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:42,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:42,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:42,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:42,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 19:35:42,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:35:42,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 718 [2020-09-24 19:35:42,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:42,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:35:42,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 19:35:42,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 19:35:42,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:35:43,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:35:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:43,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:43,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:43,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:35:43,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:43,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:35:43,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:43,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:43,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:35:43,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:43,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:35:43,067 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:35:43,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2147251828] [2020-09-24 19:35:43,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:35:43,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:35:43,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437598114] [2020-09-24 19:35:43,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:35:43,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:35:43,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:35:43,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:35:43,070 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 5 states. [2020-09-24 19:35:43,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:35:43,236 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2020-09-24 19:35:43,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:35:43,237 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-24 19:35:43,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:35:43,238 INFO L225 Difference]: With dead ends: 61 [2020-09-24 19:35:43,238 INFO L226 Difference]: Without dead ends: 45 [2020-09-24 19:35:43,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:35:43,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-24 19:35:43,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2020-09-24 19:35:43,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-24 19:35:43,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-09-24 19:35:43,253 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 30 [2020-09-24 19:35:43,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:35:43,253 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-09-24 19:35:43,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:35:43,253 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-09-24 19:35:43,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 19:35:43,254 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:35:43,255 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] [2020-09-24 19:35:43,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:35:43,255 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:35:43,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:35:43,255 INFO L82 PathProgramCache]: Analyzing trace with hash -895592636, now seen corresponding path program 1 times [2020-09-24 19:35:43,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:35:43,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006885278] [2020-09-24 19:35:43,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:35:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:43,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:43,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:44,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:44,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 19:35:44,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:35:44,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 815 [2020-09-24 19:35:44,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:44,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:35:44,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 19:35:44,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:35:44,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:35:44,283 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 21 [2020-09-24 19:35:44,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:35:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:44,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:44,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:44,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:35:44,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:44,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:35:44,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:44,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:44,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:35:44,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:44,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:35:44,308 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:35:44,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006885278] [2020-09-24 19:35:44,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:35:44,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:35:44,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693196265] [2020-09-24 19:35:44,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:35:44,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:35:44,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:35:44,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:35:44,315 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 5 states. [2020-09-24 19:35:44,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:35:44,498 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-09-24 19:35:44,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:35:44,499 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-09-24 19:35:44,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:35:44,500 INFO L225 Difference]: With dead ends: 60 [2020-09-24 19:35:44,500 INFO L226 Difference]: Without dead ends: 44 [2020-09-24 19:35:44,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:35:44,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-24 19:35:44,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-09-24 19:35:44,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-24 19:35:44,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-09-24 19:35:44,510 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 31 [2020-09-24 19:35:44,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:35:44,516 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-09-24 19:35:44,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:35:44,516 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-09-24 19:35:44,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-24 19:35:44,517 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:35:44,518 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] [2020-09-24 19:35:44,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:35:44,518 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:35:44,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:35:44,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1939159041, now seen corresponding path program 1 times [2020-09-24 19:35:44,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:35:44,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328394087] [2020-09-24 19:35:44,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:35:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:44,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:44,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:45,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:45,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 19:35:45,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:35:45,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:35:45,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:45,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:35:45,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 19:35:45,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:35:45,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:35:45,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:35:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:45,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:45,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:45,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:35:45,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:45,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:35:45,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:45,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:45,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:35:45,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:45,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:35:45,660 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:35:45,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328394087] [2020-09-24 19:35:45,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:35:45,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:35:45,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847092348] [2020-09-24 19:35:45,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:35:45,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:35:45,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:35:45,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:35:45,663 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 5 states. [2020-09-24 19:35:47,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:35:47,914 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-24 19:35:47,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:35:47,915 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-09-24 19:35:47,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:35:47,916 INFO L225 Difference]: With dead ends: 58 [2020-09-24 19:35:47,916 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 19:35:47,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:35:47,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 19:35:47,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-09-24 19:35:47,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-24 19:35:47,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-09-24 19:35:47,930 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 32 [2020-09-24 19:35:47,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:35:47,930 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-09-24 19:35:47,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:35:47,930 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-09-24 19:35:47,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-24 19:35:47,932 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:35:47,932 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] [2020-09-24 19:35:47,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:35:47,932 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:35:47,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:35:47,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1240166497, now seen corresponding path program 1 times [2020-09-24 19:35:47,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:35:47,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553960113] [2020-09-24 19:35:47,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:35:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:47,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:48,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:48,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 19:35:48,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:48,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 712 [2020-09-24 19:35:48,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:48,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 19:35:48,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 19:35:48,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 19:35:48,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:35:49,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:35:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:49,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:49,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:49,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:35:49,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:49,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:35:49,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:49,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:49,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:35:49,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:49,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:35:49,047 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 19:35:49,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553960113] [2020-09-24 19:35:49,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:35:49,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 19:35:49,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386364555] [2020-09-24 19:35:49,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 19:35:49,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:35:49,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 19:35:49,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-09-24 19:35:49,049 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 13 states. [2020-09-24 19:35:49,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:35:49,761 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2020-09-24 19:35:49,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 19:35:49,762 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2020-09-24 19:35:49,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:35:49,763 INFO L225 Difference]: With dead ends: 54 [2020-09-24 19:35:49,763 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 19:35:49,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2020-09-24 19:35:49,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 19:35:49,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 19:35:49,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 19:35:49,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 19:35:49,767 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2020-09-24 19:35:49,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:35:49,767 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 19:35:49,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 19:35:49,767 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 19:35:49,767 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 19:35:49,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:35:49,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 19:35:50,097 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-09-24 19:35:50,101 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 19:35:50,101 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-09-24 19:35:50,101 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 19:35:50,102 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 19:35:50,102 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 19:35:50,102 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 19:35:50,102 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 19:35:50,103 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-24 19:35:50,103 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-24 19:35:50,103 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-24 19:35:50,103 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-24 19:35:50,103 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-24 19:35:50,104 INFO L268 CegarLoopResult]: For program point L27(lines 27 30) no Hoare annotation was computed. [2020-09-24 19:35:50,104 INFO L268 CegarLoopResult]: For program point L27-2(lines 21 30) no Hoare annotation was computed. [2020-09-24 19:35:50,104 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 35) no Hoare annotation was computed. [2020-09-24 19:35:50,104 INFO L268 CegarLoopResult]: For program point L23(lines 23 30) no Hoare annotation was computed. [2020-09-24 19:35:50,104 INFO L264 CegarLoopResult]: At program point L19-2(lines 19 32) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0 main_~v4~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0))) [2020-09-24 19:35:50,105 INFO L264 CegarLoopResult]: At program point L19-3(lines 19 32) the Hoare annotation is: (let ((.cse12 (+ main_~i~0 main_~k~0)) (.cse10 (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0 main_~v4~0))) (let ((.cse2 (<= .cse10 main_~l~0)) (.cse0 (<= 0 .cse12)) (.cse9 (div .cse10 4294967296)) (.cse8 (div main_~l~0 4294967296)) (.cse3 (<= main_~i~0 0)) (.cse6 (<= 0 main_~i~0)) (.cse1 (+ main_~i~0 main_~j~0 main_~k~0)) (.cse7 (<= .cse12 0))) (or (let ((.cse5 (+ main_~l~0 (* 4294967296 .cse9))) (.cse4 (* 4294967296 .cse8))) (and .cse0 (<= 0 .cse1) .cse2 .cse3 (<= .cse1 0) (<= (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0 main_~v4~0 .cse4) .cse5) .cse6 (< .cse5 (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0 main_~v4~0 .cse4 1)) .cse7)) (and (<= main_~l~0 .cse10) .cse2) (let ((.cse11 (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0))) (and .cse0 (= (+ main_~l~0 (* .cse9 4294967296)) (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0 main_~v4~0 (* .cse8 4294967296))) .cse3 (<= main_~l~0 .cse1) (<= main_~l~0 .cse11) .cse6 (<= .cse11 main_~l~0) (<= main_~l~0 0) (<= .cse1 main_~l~0) .cse7 (<= 0 main_~l~0)))))) [2020-09-24 19:35:50,105 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 19:35:50,105 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 19:35:50,105 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-24 19:35:50,105 INFO L268 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-09-24 19:35:50,105 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-24 19:35:50,105 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 19:35:50,105 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 19:35:50,106 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-24 19:35:50,106 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-24 19:35:50,106 INFO L268 CegarLoopResult]: For program point L25(lines 25 30) no Hoare annotation was computed. [2020-09-24 19:35:50,106 INFO L268 CegarLoopResult]: For program point L21(lines 21 30) no Hoare annotation was computed. [2020-09-24 19:35:50,106 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 19:35:50,106 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-24 19:35:50,106 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-24 19:35:50,106 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 35) no Hoare annotation was computed. [2020-09-24 19:35:50,107 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-24 19:35:50,107 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 35) the Hoare annotation is: true [2020-09-24 19:35:50,107 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-24 19:35:50,107 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 19:35:50,107 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 19:35:50,107 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-24 19:35:50,107 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-24 19:35:50,109 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-24 19:35:50,109 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 19:35:50,109 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-24 19:35:50,109 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-24 19:35:50,109 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-24 19:35:50,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:35:50 BoogieIcfgContainer [2020-09-24 19:35:50,159 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 19:35:50,163 INFO L168 Benchmark]: Toolchain (without parser) took 15976.93 ms. Allocated memory was 138.4 MB in the beginning and 337.6 MB in the end (delta: 199.2 MB). Free memory was 101.6 MB in the beginning and 205.7 MB in the end (delta: -104.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2020-09-24 19:35:50,167 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 19:35:50,168 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.59 ms. Allocated memory is still 138.4 MB. Free memory was 101.0 MB in the beginning and 91.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-24 19:35:50,171 INFO L168 Benchmark]: Boogie Preprocessor took 126.28 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 91.1 MB in the beginning and 180.0 MB in the end (delta: -88.9 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-09-24 19:35:50,172 INFO L168 Benchmark]: RCFGBuilder took 396.16 ms. Allocated memory is still 201.3 MB. Free memory was 180.0 MB in the beginning and 164.2 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2020-09-24 19:35:50,173 INFO L168 Benchmark]: TraceAbstraction took 15109.77 ms. Allocated memory was 201.3 MB in the beginning and 337.6 MB in the end (delta: 136.3 MB). Free memory was 163.5 MB in the beginning and 205.7 MB in the end (delta: -42.2 MB). Peak memory consumption was 94.1 MB. Max. memory is 7.1 GB. [2020-09-24 19:35:50,181 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 336.59 ms. Allocated memory is still 138.4 MB. Free memory was 101.0 MB in the beginning and 91.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.28 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 91.1 MB in the beginning and 180.0 MB in the end (delta: -88.9 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 396.16 ms. Allocated memory is still 201.3 MB. Free memory was 180.0 MB in the beginning and 164.2 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15109.77 ms. Allocated memory was 201.3 MB in the beginning and 337.6 MB in the end (delta: 136.3 MB). Free memory was 163.5 MB in the beginning and 205.7 MB in the end (delta: -42.2 MB). Peak memory consumption was 94.1 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: 19]: Loop Invariant Derived loop invariant: l <= i + j + k + v3 + v4 && i + j + k + v3 + v4 <= l - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.6s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 209 SDtfs, 779 SDslu, 218 SDs, 0 SdLazy, 1001 SolverSat, 114 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 5.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=7, 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, 102 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 16 PreInvPairs, 24 NumberOfFragments, 201 HoareAnnotationTreeSize, 16 FomulaSimplifications, 1831 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 38 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 221 NumberOfCodeBlocks, 221 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 213 ConstructedInterpolants, 0 QuantifiedInterpolants, 49612 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 16/27 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...