/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt6.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 16:20:02,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 16:20:02,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 16:20:02,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 16:20:02,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 16:20:02,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 16:20:02,575 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 16:20:02,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 16:20:02,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 16:20:02,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 16:20:02,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 16:20:02,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 16:20:02,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 16:20:02,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 16:20:02,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 16:20:02,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 16:20:02,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 16:20:02,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 16:20:02,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 16:20:02,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 16:20:02,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 16:20:02,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 16:20:02,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 16:20:02,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 16:20:02,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 16:20:02,619 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 16:20:02,619 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 16:20:02,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 16:20:02,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 16:20:02,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 16:20:02,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 16:20:02,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 16:20:02,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 16:20:02,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 16:20:02,628 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 16:20:02,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 16:20:02,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 16:20:02,630 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 16:20:02,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 16:20:02,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 16:20:02,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 16:20:02,633 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 16:20:02,678 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 16:20:02,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 16:20:02,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 16:20:02,681 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 16:20:02,681 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 16:20:02,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 16:20:02,681 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 16:20:02,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 16:20:02,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 16:20:02,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 16:20:02,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 16:20:02,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 16:20:02,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 16:20:02,684 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 16:20:02,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 16:20:02,685 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 16:20:02,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 16:20:02,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 16:20:02,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 16:20:02,686 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 16:20:02,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 16:20:02,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 16:20:02,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 16:20:02,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 16:20:02,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 16:20:02,687 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 16:20:02,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 16:20:02,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 16:20:02,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 16:20:02,688 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 16:20:03,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 16:20:03,033 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 16:20:03,036 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 16:20:03,038 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 16:20:03,038 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 16:20:03,039 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt6.c [2020-10-12 16:20:03,100 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5beb717eb/88e7604ff78d424a983b92e004395519/FLAGcb7ab8dd5 [2020-10-12 16:20:03,476 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 16:20:03,477 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/sumt6.c [2020-10-12 16:20:03,484 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5beb717eb/88e7604ff78d424a983b92e004395519/FLAGcb7ab8dd5 [2020-10-12 16:20:03,877 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5beb717eb/88e7604ff78d424a983b92e004395519 [2020-10-12 16:20:03,884 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 16:20:03,886 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 16:20:03,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 16:20:03,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 16:20:03,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 16:20:03,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:20:03" (1/1) ... [2020-10-12 16:20:03,895 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63983835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:03, skipping insertion in model container [2020-10-12 16:20:03,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:20:03" (1/1) ... [2020-10-12 16:20:03,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 16:20:03,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 16:20:04,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:20:04,120 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 16:20:04,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:20:04,153 INFO L208 MainTranslator]: Completed translation [2020-10-12 16:20:04,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:04 WrapperNode [2020-10-12 16:20:04,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 16:20:04,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 16:20:04,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 16:20:04,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 16:20:04,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:04" (1/1) ... [2020-10-12 16:20:04,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:04" (1/1) ... [2020-10-12 16:20:04,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:04" (1/1) ... [2020-10-12 16:20:04,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:04" (1/1) ... [2020-10-12 16:20:04,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:04" (1/1) ... [2020-10-12 16:20:04,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:04" (1/1) ... [2020-10-12 16:20:04,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:04" (1/1) ... [2020-10-12 16:20:04,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 16:20:04,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 16:20:04,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 16:20:04,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 16:20:04,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 16:20:04,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 16:20:04,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 16:20:04,320 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 16:20:04,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 16:20:04,320 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 16:20:04,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 16:20:04,321 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 16:20:04,321 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 16:20:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 16:20:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 16:20:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 16:20:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 16:20:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 16:20:04,556 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 16:20:04,556 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 16:20:04,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:20:04 BoogieIcfgContainer [2020-10-12 16:20:04,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 16:20:04,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 16:20:04,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 16:20:04,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 16:20:04,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:20:03" (1/3) ... [2020-10-12 16:20:04,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b921766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:20:04, skipping insertion in model container [2020-10-12 16:20:04,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:04" (2/3) ... [2020-10-12 16:20:04,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b921766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:20:04, skipping insertion in model container [2020-10-12 16:20:04,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:20:04" (3/3) ... [2020-10-12 16:20:04,569 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt6.c [2020-10-12 16:20:04,580 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 16:20:04,588 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 16:20:04,603 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 16:20:04,637 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 16:20:04,637 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 16:20:04,637 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 16:20:04,637 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 16:20:04,637 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 16:20:04,638 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 16:20:04,638 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 16:20:04,638 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 16:20:04,661 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-12 16:20:04,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-12 16:20:04,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:04,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:20:04,669 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:04,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:04,680 INFO L82 PathProgramCache]: Analyzing trace with hash 660851550, now seen corresponding path program 1 times [2020-10-12 16:20:04,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:04,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36431724] [2020-10-12 16:20:04,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:04,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:04,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:04,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:05,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:05,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 16:20:05,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:20:05,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-12 16:20:05,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:05,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:20:05,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:20:05,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 16:20:05,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 16:20:05,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:05,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:05,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:05,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:05,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:05,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:05,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:20:05,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:05,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:05,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:05,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:05,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:20:05,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:20:05,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36431724] [2020-10-12 16:20:05,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:20:05,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 16:20:05,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636922814] [2020-10-12 16:20:05,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 16:20:05,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:05,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 16:20:05,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 16:20:05,423 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2020-10-12 16:20:05,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:05,692 INFO L93 Difference]: Finished difference Result 52 states and 70 transitions. [2020-10-12 16:20:05,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 16:20:05,695 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-12 16:20:05,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:05,706 INFO L225 Difference]: With dead ends: 52 [2020-10-12 16:20:05,706 INFO L226 Difference]: Without dead ends: 25 [2020-10-12 16:20:05,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-12 16:20:05,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-12 16:20:05,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2020-10-12 16:20:05,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-12 16:20:05,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2020-10-12 16:20:05,753 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 12 [2020-10-12 16:20:05,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:05,754 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2020-10-12 16:20:05,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 16:20:05,754 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2020-10-12 16:20:05,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-12 16:20:05,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:05,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:20:05,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 16:20:05,756 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:05,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:05,757 INFO L82 PathProgramCache]: Analyzing trace with hash -2109978427, now seen corresponding path program 1 times [2020-10-12 16:20:05,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:05,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760730204] [2020-10-12 16:20:05,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:05,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:06,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:06,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 16:20:06,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:06,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 397 [2020-10-12 16:20:06,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:06,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 16:20:06,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:20:06,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 16:20:06,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:20:06,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:06,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:06,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:06,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:06,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:06,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:20:06,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:06,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:06,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:06,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:06,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 16:20:06,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:20:06,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760730204] [2020-10-12 16:20:06,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:20:06,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 16:20:06,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76216910] [2020-10-12 16:20:06,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 16:20:06,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:06,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 16:20:06,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 16:20:06,508 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand 8 states. [2020-10-12 16:20:06,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:06,785 INFO L93 Difference]: Finished difference Result 43 states and 60 transitions. [2020-10-12 16:20:06,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 16:20:06,787 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-10-12 16:20:06,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:06,788 INFO L225 Difference]: With dead ends: 43 [2020-10-12 16:20:06,788 INFO L226 Difference]: Without dead ends: 28 [2020-10-12 16:20:06,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-12 16:20:06,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-12 16:20:06,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2020-10-12 16:20:06,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-12 16:20:06,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2020-10-12 16:20:06,798 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 15 [2020-10-12 16:20:06,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:06,798 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2020-10-12 16:20:06,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 16:20:06,798 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2020-10-12 16:20:06,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-12 16:20:06,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:06,799 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:20:06,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 16:20:06,800 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:06,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:06,800 INFO L82 PathProgramCache]: Analyzing trace with hash -441848577, now seen corresponding path program 2 times [2020-10-12 16:20:06,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:06,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086065776] [2020-10-12 16:20:06,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:06,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:06,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:07,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:07,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 16:20:07,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:20:07,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-12 16:20:07,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:07,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:20:07,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 16:20:07,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 16:20:07,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:20:07,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:07,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:07,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:07,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:07,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:07,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:20:07,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:07,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:07,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:07,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:07,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:07,163 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:20:07,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086065776] [2020-10-12 16:20:07,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:20:07,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 16:20:07,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852411750] [2020-10-12 16:20:07,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 16:20:07,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:07,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 16:20:07,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:20:07,165 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand 5 states. [2020-10-12 16:20:13,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:13,609 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2020-10-12 16:20:13,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 16:20:13,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-12 16:20:13,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:13,613 INFO L225 Difference]: With dead ends: 39 [2020-10-12 16:20:13,614 INFO L226 Difference]: Without dead ends: 27 [2020-10-12 16:20:13,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 16:20:13,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-12 16:20:13,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-10-12 16:20:13,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-12 16:20:13,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2020-10-12 16:20:13,628 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 18 [2020-10-12 16:20:13,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:13,628 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2020-10-12 16:20:13,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 16:20:13,629 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2020-10-12 16:20:13,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-12 16:20:13,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:13,630 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:20:13,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 16:20:13,631 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:13,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:13,631 INFO L82 PathProgramCache]: Analyzing trace with hash -520861587, now seen corresponding path program 1 times [2020-10-12 16:20:13,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:13,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487921524] [2020-10-12 16:20:13,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:13,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:13,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:13,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 16:20:13,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:13,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-12 16:20:13,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:13,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:20:13,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:20:13,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 16:20:13,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:13,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:13,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:13,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:13,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:13,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:13,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:20:13,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:13,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:13,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:14,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:14,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:20:14,002 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:20:14,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487921524] [2020-10-12 16:20:14,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:20:14,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 16:20:14,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533207963] [2020-10-12 16:20:14,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 16:20:14,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:14,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 16:20:14,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:20:14,005 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 5 states. [2020-10-12 16:20:14,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:14,166 INFO L93 Difference]: Finished difference Result 47 states and 63 transitions. [2020-10-12 16:20:14,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 16:20:14,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-12 16:20:14,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:14,168 INFO L225 Difference]: With dead ends: 47 [2020-10-12 16:20:14,168 INFO L226 Difference]: Without dead ends: 32 [2020-10-12 16:20:14,169 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 [2020-10-12 16:20:14,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-12 16:20:14,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2020-10-12 16:20:14,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-12 16:20:14,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2020-10-12 16:20:14,184 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 19 [2020-10-12 16:20:14,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:14,185 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2020-10-12 16:20:14,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 16:20:14,185 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-10-12 16:20:14,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-12 16:20:14,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:14,187 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:20:14,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 16:20:14,187 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:14,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:14,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1467253508, now seen corresponding path program 1 times [2020-10-12 16:20:14,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:14,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357621208] [2020-10-12 16:20:14,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:14,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:14,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:14,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:14,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 16:20:14,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:20:14,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-12 16:20:14,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:14,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:20:14,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:20:14,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 16:20:14,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:20:14,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:14,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:14,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:14,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:14,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:14,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:14,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:20:14,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:14,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:14,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:14,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:14,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:14,606 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:20:14,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357621208] [2020-10-12 16:20:14,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:20:14,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 16:20:14,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092481423] [2020-10-12 16:20:14,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 16:20:14,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:14,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 16:20:14,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:20:14,611 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 5 states. [2020-10-12 16:20:14,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:14,742 INFO L93 Difference]: Finished difference Result 47 states and 62 transitions. [2020-10-12 16:20:14,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 16:20:14,743 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-12 16:20:14,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:14,744 INFO L225 Difference]: With dead ends: 47 [2020-10-12 16:20:14,744 INFO L226 Difference]: Without dead ends: 32 [2020-10-12 16:20:14,744 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 [2020-10-12 16:20:14,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-12 16:20:14,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2020-10-12 16:20:14,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-12 16:20:14,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2020-10-12 16:20:14,754 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 20 [2020-10-12 16:20:14,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:14,754 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2020-10-12 16:20:14,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 16:20:14,755 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2020-10-12 16:20:14,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-12 16:20:14,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:14,756 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:20:14,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 16:20:14,757 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:14,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:14,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1183136878, now seen corresponding path program 1 times [2020-10-12 16:20:14,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:14,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363182784] [2020-10-12 16:20:14,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:14,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:15,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:15,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:15,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 16:20:15,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:20:15,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 679 [2020-10-12 16:20:15,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:15,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:20:15,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 16:20:15,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 16:20:15,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:15,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:15,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:15,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:15,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:15,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:15,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:20:15,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:15,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:15,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:15,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:15,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:15,741 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:20:15,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363182784] [2020-10-12 16:20:15,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:20:15,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 16:20:15,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621757785] [2020-10-12 16:20:15,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 16:20:15,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:15,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 16:20:15,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:20:15,747 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 5 states. [2020-10-12 16:20:28,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:28,380 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2020-10-12 16:20:28,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 16:20:28,464 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-12 16:20:28,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:28,465 INFO L225 Difference]: With dead ends: 50 [2020-10-12 16:20:28,465 INFO L226 Difference]: Without dead ends: 35 [2020-10-12 16:20:28,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 16:20:28,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-12 16:20:28,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2020-10-12 16:20:28,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-12 16:20:28,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2020-10-12 16:20:28,480 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 21 [2020-10-12 16:20:28,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:28,481 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2020-10-12 16:20:28,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 16:20:28,481 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2020-10-12 16:20:28,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-12 16:20:28,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:28,482 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] [2020-10-12 16:20:28,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 16:20:28,483 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:28,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:28,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1598309111, now seen corresponding path program 1 times [2020-10-12 16:20:28,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:28,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164487706] [2020-10-12 16:20:28,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:28,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:28,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:30,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:30,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:30,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 16:20:30,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:20:30,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2145 [2020-10-12 16:20:30,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:30,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:20:30,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 16:20:30,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 16:20:30,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:32,870 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 35 DAG size of output: 13 [2020-10-12 16:20:32,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:32,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:32,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:32,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:32,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:32,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:20:32,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:32,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:32,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:32,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:32,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 16:20:32,889 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:20:32,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164487706] [2020-10-12 16:20:32,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:20:32,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 16:20:32,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209873946] [2020-10-12 16:20:32,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 16:20:32,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:32,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 16:20:32,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:20:32,892 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand 5 states. [2020-10-12 16:20:39,373 WARN L838 $PredicateComparison]: unable to prove that (and (<= c_main_~l~0 (let ((.cse2 (div c_main_~l~0 4294967296))) (let ((.cse1 (* .cse2 (- 4294967296)))) (let ((.cse0 (div (+ c_main_~l~0 .cse1) 6))) (+ (* 4294967296 (div (+ c_main_~l~0 (* .cse0 (- 6)) .cse1) 4294967296)) (* 6 .cse0) (* 4294967296 .cse2)))))) (= c_~SIZE~0 |c_old(~SIZE~0)|) (<= (let ((.cse3 (div c_main_~l~0 2))) (+ (* 2 .cse3) (* 4294967296 (div (+ (* .cse3 (- 2)) c_main_~l~0) 4294967296)) 1)) c_main_~l~0)) is different from false [2020-10-12 16:20:41,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:41,483 INFO L93 Difference]: Finished difference Result 61 states and 84 transitions. [2020-10-12 16:20:41,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 16:20:41,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-12 16:20:41,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:41,490 INFO L225 Difference]: With dead ends: 61 [2020-10-12 16:20:41,490 INFO L226 Difference]: Without dead ends: 43 [2020-10-12 16:20:41,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=17, Invalid=28, Unknown=1, NotChecked=10, Total=56 [2020-10-12 16:20:41,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-12 16:20:41,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2020-10-12 16:20:41,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-12 16:20:41,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 52 transitions. [2020-10-12 16:20:41,506 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 52 transitions. Word has length 22 [2020-10-12 16:20:41,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:41,507 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 52 transitions. [2020-10-12 16:20:41,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 16:20:41,509 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 52 transitions. [2020-10-12 16:20:41,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-12 16:20:41,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:41,510 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] [2020-10-12 16:20:41,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 16:20:41,511 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:41,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:41,512 INFO L82 PathProgramCache]: Analyzing trace with hash 176698251, now seen corresponding path program 1 times [2020-10-12 16:20:41,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:41,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715800863] [2020-10-12 16:20:41,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:41,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:54,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:54,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 16:20:54,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:54,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12536 [2020-10-12 16:20:54,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:54,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 16:20:54,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:20:54,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 16:20:54,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:54,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:54,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:54,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:54,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:54,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:54,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:54,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:20:54,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:54,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:54,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:54,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:54,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:54,201 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 16:20:54,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715800863] [2020-10-12 16:20:54,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:20:54,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 16:20:54,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791444399] [2020-10-12 16:20:54,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 16:20:54,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:54,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 16:20:54,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 16:20:54,204 INFO L87 Difference]: Start difference. First operand 39 states and 52 transitions. Second operand 8 states. [2020-10-12 16:20:58,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:58,503 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2020-10-12 16:20:58,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 16:20:58,504 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-10-12 16:20:58,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:58,505 INFO L225 Difference]: With dead ends: 39 [2020-10-12 16:20:58,505 INFO L226 Difference]: Without dead ends: 0 [2020-10-12 16:20:58,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-12 16:20:58,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-12 16:20:58,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-12 16:20:58,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-12 16:20:58,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-12 16:20:58,507 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-10-12 16:20:58,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:58,507 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-12 16:20:58,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 16:20:58,507 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-12 16:20:58,507 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-12 16:20:58,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 16:20:58,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-12 16:20:58,637 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-12 16:20:58,637 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-10-12 16:20:58,637 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-12 16:20:58,638 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-12 16:20:58,638 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-12 16:20:58,638 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-12 16:20:58,638 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-12 16:20:58,638 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-10-12 16:20:58,638 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-12 16:20:58,638 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-10-12 16:20:58,638 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-10-12 16:20:58,639 INFO L268 CegarLoopResult]: For program point L29(lines 29 32) no Hoare annotation was computed. [2020-10-12 16:20:58,639 INFO L268 CegarLoopResult]: For program point L27(lines 27 32) no Hoare annotation was computed. [2020-10-12 16:20:58,639 INFO L268 CegarLoopResult]: For program point L29-2(lines 21 32) no Hoare annotation was computed. [2020-10-12 16:20:58,639 INFO L268 CegarLoopResult]: For program point L25(lines 25 32) no Hoare annotation was computed. [2020-10-12 16:20:58,639 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 37) no Hoare annotation was computed. [2020-10-12 16:20:58,639 INFO L268 CegarLoopResult]: For program point L23(lines 23 32) no Hoare annotation was computed. [2020-10-12 16:20:58,639 INFO L268 CegarLoopResult]: For program point L21(lines 21 32) no Hoare annotation was computed. [2020-10-12 16:20:58,640 INFO L264 CegarLoopResult]: At program point L19-2(lines 19 34) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v2~0 main_~v3~0 main_~v4~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0))) [2020-10-12 16:20:58,640 INFO L264 CegarLoopResult]: At program point L19-3(lines 19 34) the Hoare annotation is: (let ((.cse2 (+ main_~i~0 main_~j~0 main_~k~0 main_~v2~0 main_~v3~0 main_~v4~0))) (let ((.cse1 (+ main_~l~0 (* 4294967296 (div .cse2 4294967296)))) (.cse0 (* 4294967296 (div main_~l~0 4294967296)))) (and (<= (+ main_~i~0 main_~j~0 main_~k~0 main_~v2~0 main_~v3~0 main_~v4~0 .cse0) .cse1) (< .cse1 (+ main_~i~0 main_~j~0 main_~k~0 main_~v2~0 main_~v3~0 main_~v4~0 .cse0 1)) (<= .cse2 main_~l~0)))) [2020-10-12 16:20:58,640 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 37) no Hoare annotation was computed. [2020-10-12 16:20:58,640 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 37) the Hoare annotation is: true [2020-10-12 16:20:58,640 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-10-12 16:20:58,640 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-10-12 16:20:58,641 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-10-12 16:20:58,641 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-10-12 16:20:58,641 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-12 16:20:58,641 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-10-12 16:20:58,641 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-10-12 16:20:58,641 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-10-12 16:20:58,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 04:20:58 BoogieIcfgContainer [2020-10-12 16:20:58,661 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 16:20:58,663 INFO L168 Benchmark]: Toolchain (without parser) took 54776.95 ms. Allocated memory was 141.0 MB in the beginning and 518.5 MB in the end (delta: 377.5 MB). Free memory was 104.8 MB in the beginning and 233.1 MB in the end (delta: -128.4 MB). Peak memory consumption was 249.1 MB. Max. memory is 7.1 GB. [2020-10-12 16:20:58,664 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 16:20:58,665 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.89 ms. Allocated memory is still 141.0 MB. Free memory was 104.6 MB in the beginning and 94.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-10-12 16:20:58,666 INFO L168 Benchmark]: Boogie Preprocessor took 105.22 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 94.6 MB in the beginning and 182.0 MB in the end (delta: -87.4 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-10-12 16:20:58,666 INFO L168 Benchmark]: RCFGBuilder took 300.57 ms. Allocated memory is still 202.9 MB. Free memory was 182.0 MB in the beginning and 166.4 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. [2020-10-12 16:20:58,667 INFO L168 Benchmark]: TraceAbstraction took 54099.16 ms. Allocated memory was 202.9 MB in the beginning and 518.5 MB in the end (delta: 315.6 MB). Free memory was 165.7 MB in the beginning and 233.1 MB in the end (delta: -67.4 MB). Peak memory consumption was 248.2 MB. Max. memory is 7.1 GB. [2020-10-12 16:20:58,671 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 266.89 ms. Allocated memory is still 141.0 MB. Free memory was 104.6 MB in the beginning and 94.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 105.22 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 94.6 MB in the beginning and 182.0 MB in the end (delta: -87.4 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 300.57 ms. Allocated memory is still 202.9 MB. Free memory was 182.0 MB in the beginning and 166.4 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 54099.16 ms. Allocated memory was 202.9 MB in the beginning and 518.5 MB in the end (delta: 315.6 MB). Free memory was 165.7 MB in the beginning and 233.1 MB in the end (delta: -67.4 MB). Peak memory consumption was 248.2 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 + v2 + v3 + v4 && i + j + k + v2 + v3 + v4 <= l - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 53.8s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 32.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 267 SDslu, 158 SDs, 0 SdLazy, 486 SolverSat, 69 SolverUnsat, 14 SolverUnknown, 0 SolverNotchecked, 29.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 5.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred 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: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 25 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 16 PreInvPairs, 24 NumberOfFragments, 89 HoareAnnotationTreeSize, 16 FomulaSimplifications, 917 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 117 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 20.3s InterpolantComputationTime, 149 NumberOfCodeBlocks, 149 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 141 ConstructedInterpolants, 0 QuantifiedInterpolants, 28083 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 24/31 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...