/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/sumt7.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 16:20:13,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 16:20:13,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 16:20:13,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 16:20:13,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 16:20:13,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 16:20:13,936 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 16:20:13,939 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 16:20:13,941 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 16:20:13,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 16:20:13,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 16:20:13,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 16:20:13,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 16:20:13,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 16:20:13,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 16:20:13,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 16:20:13,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 16:20:13,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 16:20:13,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 16:20:13,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 16:20:13,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 16:20:13,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 16:20:13,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 16:20:13,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 16:20:13,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 16:20:13,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 16:20:13,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 16:20:13,984 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 16:20:13,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 16:20:13,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 16:20:13,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 16:20:13,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 16:20:13,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 16:20:13,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 16:20:13,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 16:20:13,990 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 16:20:13,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 16:20:13,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 16:20:13,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 16:20:13,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 16:20:13,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 16:20:13,995 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 16:20:14,036 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 16:20:14,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 16:20:14,039 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 16:20:14,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 16:20:14,040 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 16:20:14,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 16:20:14,040 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 16:20:14,040 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 16:20:14,041 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 16:20:14,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 16:20:14,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 16:20:14,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 16:20:14,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 16:20:14,043 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 16:20:14,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 16:20:14,043 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 16:20:14,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 16:20:14,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 16:20:14,044 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 16:20:14,044 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 16:20:14,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 16:20:14,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 16:20:14,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 16:20:14,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 16:20:14,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 16:20:14,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 16:20:14,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 16:20:14,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 16:20:14,045 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 16:20:14,046 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 16:20:14,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 16:20:14,377 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 16:20:14,382 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 16:20:14,385 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 16:20:14,385 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 16:20:14,386 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt7.c [2020-10-12 16:20:14,445 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e245a5a4/345ddc738cdc497486424bfa9b0718f6/FLAG4c1870db6 [2020-10-12 16:20:14,892 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 16:20:14,893 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/sumt7.c [2020-10-12 16:20:14,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e245a5a4/345ddc738cdc497486424bfa9b0718f6/FLAG4c1870db6 [2020-10-12 16:20:15,291 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e245a5a4/345ddc738cdc497486424bfa9b0718f6 [2020-10-12 16:20:15,303 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 16:20:15,305 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 16:20:15,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 16:20:15,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 16:20:15,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 16:20:15,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:20:15" (1/1) ... [2020-10-12 16:20:15,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6faa959a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:15, skipping insertion in model container [2020-10-12 16:20:15,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:20:15" (1/1) ... [2020-10-12 16:20:15,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 16:20:15,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 16:20:15,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:20:15,600 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 16:20:15,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:20:15,637 INFO L208 MainTranslator]: Completed translation [2020-10-12 16:20:15,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:15 WrapperNode [2020-10-12 16:20:15,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 16:20:15,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 16:20:15,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 16:20:15,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 16:20:15,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:15" (1/1) ... [2020-10-12 16:20:15,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:15" (1/1) ... [2020-10-12 16:20:15,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:15" (1/1) ... [2020-10-12 16:20:15,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:15" (1/1) ... [2020-10-12 16:20:15,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:15" (1/1) ... [2020-10-12 16:20:15,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:15" (1/1) ... [2020-10-12 16:20:15,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:15" (1/1) ... [2020-10-12 16:20:15,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 16:20:15,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 16:20:15,746 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 16:20:15,746 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 16:20:15,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:15" (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 16:20:15,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 16:20:15,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 16:20:15,804 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 16:20:15,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 16:20:15,804 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 16:20:15,804 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 16:20:15,804 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 16:20:15,804 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 16:20:15,804 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 16:20:15,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 16:20:15,805 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 16:20:15,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 16:20:15,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 16:20:16,051 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 16:20:16,052 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 16:20:16,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:20:16 BoogieIcfgContainer [2020-10-12 16:20:16,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 16:20:16,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 16:20:16,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 16:20:16,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 16:20:16,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:20:15" (1/3) ... [2020-10-12 16:20:16,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fdae0b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:20:16, skipping insertion in model container [2020-10-12 16:20:16,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:15" (2/3) ... [2020-10-12 16:20:16,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fdae0b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:20:16, skipping insertion in model container [2020-10-12 16:20:16,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:20:16" (3/3) ... [2020-10-12 16:20:16,064 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt7.c [2020-10-12 16:20:16,076 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 16:20:16,083 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 16:20:16,100 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 16:20:16,128 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 16:20:16,128 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 16:20:16,128 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 16:20:16,128 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 16:20:16,128 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 16:20:16,128 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 16:20:16,129 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 16:20:16,129 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 16:20:16,148 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-12 16:20:16,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-12 16:20:16,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:16,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:20:16,157 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:16,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:16,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1473118151, now seen corresponding path program 1 times [2020-10-12 16:20:16,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:16,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655570389] [2020-10-12 16:20:16,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:16,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:16,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:16,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 16:20:16,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:16,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 483 [2020-10-12 16:20:16,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:16,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 16:20:16,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:20:16,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 16:20:16,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 16:20:17,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:17,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:17,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:17,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:17,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:17,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:20:17,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:17,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:17,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:17,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:17,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:20:17,180 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 16:20:17,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655570389] [2020-10-12 16:20:17,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:20:17,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 16:20:17,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550261708] [2020-10-12 16:20:17,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 16:20:17,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:17,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 16:20:17,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 16:20:17,207 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 8 states. [2020-10-12 16:20:19,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:19,696 INFO L93 Difference]: Finished difference Result 68 states and 99 transitions. [2020-10-12 16:20:19,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 16:20:19,697 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-10-12 16:20:19,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:19,706 INFO L225 Difference]: With dead ends: 68 [2020-10-12 16:20:19,706 INFO L226 Difference]: Without dead ends: 37 [2020-10-12 16:20:19,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-12 16:20:19,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-12 16:20:19,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2020-10-12 16:20:19,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-12 16:20:19,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-10-12 16:20:19,760 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 14 [2020-10-12 16:20:19,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:19,760 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-10-12 16:20:19,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 16:20:19,760 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-10-12 16:20:19,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-12 16:20:19,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:19,763 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:20:19,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 16:20:19,764 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:19,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:19,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1990755954, now seen corresponding path program 1 times [2020-10-12 16:20:19,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:19,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563513747] [2020-10-12 16:20:19,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:19,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:19,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:20,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:20,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:20,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:20,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 16:20:20,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 16:20:20,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 787 [2020-10-12 16:20:20,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:20,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 16:20:20,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 16:20:20,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 16:20:20,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 16:20:20,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:20,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:20,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:20,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:20,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:20,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:20:20,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:20,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:20,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:20,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:20,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:20,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 16:20:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:20,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:20,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:20,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:20:20,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:20,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 16:20:20,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:20,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:20:20,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:20,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 16:20:20,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:20,856 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:20:20,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563513747] [2020-10-12 16:20:20,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:20:20,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 16:20:20,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717529816] [2020-10-12 16:20:20,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 16:20:20,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:20,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 16:20:20,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 16:20:20,864 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 8 states. [2020-10-12 16:20:23,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:23,217 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2020-10-12 16:20:23,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 16:20:23,218 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-10-12 16:20:23,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:23,221 INFO L225 Difference]: With dead ends: 36 [2020-10-12 16:20:23,222 INFO L226 Difference]: Without dead ends: 34 [2020-10-12 16:20:23,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-12 16:20:23,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-12 16:20:23,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-12 16:20:23,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-12 16:20:23,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2020-10-12 16:20:23,249 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 22 [2020-10-12 16:20:23,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:23,250 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2020-10-12 16:20:23,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 16:20:23,250 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2020-10-12 16:20:23,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-12 16:20:23,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:23,255 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] [2020-10-12 16:20:23,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 16:20:23,256 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:23,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:23,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1835448792, now seen corresponding path program 1 times [2020-10-12 16:20:23,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:23,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430366929] [2020-10-12 16:20:23,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:23,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:52,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:52,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 16:20:52,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:52,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29483 [2020-10-12 16:20:52,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:52,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:20:52,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:20:52,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 16:20:52,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:20:53,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:53,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:53,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:53,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:53,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:53,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:53,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:20:53,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:53,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:53,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:53,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:53,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:53,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 16:20:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:53,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:53,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:53,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:20:53,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:53,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 16:20:53,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:53,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:20:53,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:53,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:20:53,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:53,045 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:20:53,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430366929] [2020-10-12 16:20:53,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:20:53,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 16:20:53,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697532530] [2020-10-12 16:20:53,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 16:20:53,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:53,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 16:20:53,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:20:53,049 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 5 states. [2020-10-12 16:20:55,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:55,396 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2020-10-12 16:20:55,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 16:20:55,398 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-12 16:20:55,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:55,399 INFO L225 Difference]: With dead ends: 62 [2020-10-12 16:20:55,399 INFO L226 Difference]: Without dead ends: 43 [2020-10-12 16:20:55,400 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 16:20:55,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-12 16:20:55,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2020-10-12 16:20:55,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-12 16:20:55,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2020-10-12 16:20:55,415 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 26 [2020-10-12 16:20:55,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:55,415 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2020-10-12 16:20:55,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 16:20:55,415 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2020-10-12 16:20:55,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-12 16:20:55,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:55,416 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] [2020-10-12 16:20:55,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 16:20:55,417 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:55,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:55,417 INFO L82 PathProgramCache]: Analyzing trace with hash 576279582, now seen corresponding path program 1 times [2020-10-12 16:20:55,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:55,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615692167] [2020-10-12 16:20:55,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:55,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:56,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:34,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:34,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 16:21:34,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:21:34,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39026 [2020-10-12 16:21:34,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:34,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 16:21:34,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 16:21:34,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 16:21:34,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:34,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:21:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:34,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:34,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:34,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:21:34,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:34,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:34,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:34,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:21:34,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:34,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:21:34,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:34,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 16:21:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:34,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:34,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:34,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:34,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:34,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 16:21:34,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:34,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:21:34,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:34,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 16:21:34,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:34,625 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:21:34,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615692167] [2020-10-12 16:21:34,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:21:34,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 16:21:34,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465963497] [2020-10-12 16:21:34,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 16:21:34,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:21:34,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 16:21:34,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 16:21:34,628 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand 9 states. [2020-10-12 16:21:43,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:21:43,230 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2020-10-12 16:21:43,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 16:21:43,231 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-10-12 16:21:43,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:21:43,233 INFO L225 Difference]: With dead ends: 48 [2020-10-12 16:21:43,233 INFO L226 Difference]: Without dead ends: 46 [2020-10-12 16:21:43,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-12 16:21:43,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-12 16:21:43,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2020-10-12 16:21:43,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-12 16:21:43,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2020-10-12 16:21:43,245 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 27 [2020-10-12 16:21:43,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:21:43,246 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2020-10-12 16:21:43,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 16:21:43,246 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2020-10-12 16:21:43,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-12 16:21:43,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:21:43,247 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] [2020-10-12 16:21:43,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 16:21:43,247 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:21:43,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:21:43,248 INFO L82 PathProgramCache]: Analyzing trace with hash 633537884, now seen corresponding path program 1 times [2020-10-12 16:21:43,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:21:43,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440919037] [2020-10-12 16:21:43,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:21:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:43,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:43,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:58,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:58,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 16:21:58,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:21:58,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15476 [2020-10-12 16:21:58,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:58,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 16:21:58,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:21:58,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 16:21:58,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:58,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:21:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:58,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:58,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:58,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:21:58,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:58,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:58,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:58,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:21:58,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:58,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:21:58,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:58,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 16:21:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:58,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:58,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:58,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:58,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:58,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:21:58,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:58,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:58,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:58,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:58,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:58,902 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 16:21:58,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440919037] [2020-10-12 16:21:58,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:21:58,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 16:21:58,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981241672] [2020-10-12 16:21:58,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 16:21:58,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:21:58,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 16:21:58,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 16:21:58,905 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand 8 states. [2020-10-12 16:21:59,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:21:59,101 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2020-10-12 16:21:59,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 16:21:59,109 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-10-12 16:21:59,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:21:59,110 INFO L225 Difference]: With dead ends: 42 [2020-10-12 16:21:59,110 INFO L226 Difference]: Without dead ends: 0 [2020-10-12 16:21:59,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 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 16:21:59,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-12 16:21:59,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-12 16:21:59,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-12 16:21:59,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-12 16:21:59,111 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2020-10-12 16:21:59,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:21:59,112 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-12 16:21:59,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 16:21:59,112 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-12 16:21:59,112 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-12 16:21:59,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 16:21:59,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-12 16:21:59,257 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-12 16:21:59,258 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-10-12 16:21:59,258 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-12 16:21:59,258 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-12 16:21:59,258 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-12 16:21:59,258 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-12 16:21:59,259 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-12 16:21:59,259 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-10-12 16:21:59,259 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-12 16:21:59,259 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-10-12 16:21:59,259 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-10-12 16:21:59,259 INFO L268 CegarLoopResult]: For program point L31(lines 31 34) no Hoare annotation was computed. [2020-10-12 16:21:59,260 INFO L268 CegarLoopResult]: For program point L29(lines 29 34) no Hoare annotation was computed. [2020-10-12 16:21:59,260 INFO L268 CegarLoopResult]: For program point L31-2(lines 21 34) no Hoare annotation was computed. [2020-10-12 16:21:59,260 INFO L268 CegarLoopResult]: For program point L27(lines 27 34) no Hoare annotation was computed. [2020-10-12 16:21:59,260 INFO L268 CegarLoopResult]: For program point L25(lines 25 34) no Hoare annotation was computed. [2020-10-12 16:21:59,260 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 39) no Hoare annotation was computed. [2020-10-12 16:21:59,260 INFO L268 CegarLoopResult]: For program point L23(lines 23 34) no Hoare annotation was computed. [2020-10-12 16:21:59,260 INFO L268 CegarLoopResult]: For program point L21(lines 21 34) no Hoare annotation was computed. [2020-10-12 16:21:59,260 INFO L268 CegarLoopResult]: For program point L19-2(lines 19 37) no Hoare annotation was computed. [2020-10-12 16:21:59,261 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 39) no Hoare annotation was computed. [2020-10-12 16:21:59,261 INFO L264 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0))) [2020-10-12 16:21:59,261 INFO L264 CegarLoopResult]: At program point L36-1(lines 19 37) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0))) [2020-10-12 16:21:59,261 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 39) the Hoare annotation is: true [2020-10-12 16:21:59,261 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-10-12 16:21:59,261 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-10-12 16:21:59,262 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-10-12 16:21:59,262 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-12 16:21:59,262 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-10-12 16:21:59,262 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-10-12 16:21:59,262 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-10-12 16:21:59,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 04:21:59 BoogieIcfgContainer [2020-10-12 16:21:59,279 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 16:21:59,281 INFO L168 Benchmark]: Toolchain (without parser) took 103976.25 ms. Allocated memory was 143.7 MB in the beginning and 728.8 MB in the end (delta: 585.1 MB). Free memory was 107.2 MB in the beginning and 671.1 MB in the end (delta: -563.9 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2020-10-12 16:21:59,282 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 143.7 MB. Free memory was 125.2 MB in the beginning and 125.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 16:21:59,283 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.95 ms. Allocated memory is still 143.7 MB. Free memory was 106.8 MB in the beginning and 96.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-10-12 16:21:59,284 INFO L168 Benchmark]: Boogie Preprocessor took 107.36 ms. Allocated memory was 143.7 MB in the beginning and 205.0 MB in the end (delta: 61.3 MB). Free memory was 96.8 MB in the beginning and 183.1 MB in the end (delta: -86.3 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-10-12 16:21:59,285 INFO L168 Benchmark]: RCFGBuilder took 309.60 ms. Allocated memory is still 205.0 MB. Free memory was 183.1 MB in the beginning and 168.1 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. [2020-10-12 16:21:59,286 INFO L168 Benchmark]: TraceAbstraction took 103222.53 ms. Allocated memory was 205.0 MB in the beginning and 728.8 MB in the end (delta: 523.8 MB). Free memory was 167.4 MB in the beginning and 671.1 MB in the end (delta: -503.7 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-10-12 16:21:59,291 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 143.7 MB. Free memory was 125.2 MB in the beginning and 125.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 331.95 ms. Allocated memory is still 143.7 MB. Free memory was 106.8 MB in the beginning and 96.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.36 ms. Allocated memory was 143.7 MB in the beginning and 205.0 MB in the end (delta: 61.3 MB). Free memory was 96.8 MB in the beginning and 183.1 MB in the end (delta: -86.3 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 309.60 ms. Allocated memory is still 205.0 MB. Free memory was 183.1 MB in the beginning and 168.1 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 103222.53 ms. Allocated memory was 205.0 MB in the beginning and 728.8 MB in the end (delta: 523.8 MB). Free memory was 167.4 MB in the beginning and 671.1 MB in the end (delta: -503.7 MB). Peak memory consumption was 20.1 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 + v1 + v2 + v3 + v4 && i + j + k + v1 + v2 + v3 + v4 <= l - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 102.9s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 16.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 58 SDtfs, 178 SDslu, 158 SDs, 0 SdLazy, 525 SolverSat, 77 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 14.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=4, 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, 5 MinimizatonAttempts, 14 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 12 PreInvPairs, 18 NumberOfFragments, 49 HoareAnnotationTreeSize, 12 FomulaSimplifications, 672 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 123 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 86.4s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 111 ConstructedInterpolants, 0 QuantifiedInterpolants, 41295 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 19/24 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...