/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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 [2020-10-15 00:06:43,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 00:06:43,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 00:06:43,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 00:06:43,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 00:06:43,920 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 00:06:43,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 00:06:43,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 00:06:43,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 00:06:43,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 00:06:43,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 00:06:43,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 00:06:43,928 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 00:06:43,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 00:06:43,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 00:06:43,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 00:06:43,932 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 00:06:43,933 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 00:06:43,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 00:06:43,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 00:06:43,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 00:06:43,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 00:06:43,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 00:06:43,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 00:06:43,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 00:06:43,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 00:06:43,944 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 00:06:43,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 00:06:43,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 00:06:43,946 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 00:06:43,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 00:06:43,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 00:06:43,948 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 00:06:43,949 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 00:06:43,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 00:06:43,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 00:06:43,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 00:06:43,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 00:06:43,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 00:06:43,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 00:06:43,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 00:06:43,956 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 [2020-10-15 00:06:44,006 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 00:06:44,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 00:06:44,010 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 00:06:44,011 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 00:06:44,011 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 00:06:44,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 00:06:44,011 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 00:06:44,011 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 00:06:44,011 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 00:06:44,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 00:06:44,011 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 00:06:44,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 00:06:44,012 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 00:06:44,012 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 00:06:44,012 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 00:06:44,012 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 00:06:44,012 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 00:06:44,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 00:06:44,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 00:06:44,013 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 00:06:44,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 00:06:44,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 00:06:44,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 00:06:44,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 00:06:44,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 00:06:44,016 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 00:06:44,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 00:06:44,016 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 00:06:44,016 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 00:06:44,017 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 00:06:44,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 00:06:44,351 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 00:06:44,359 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 00:06:44,361 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 00:06:44,361 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 00:06:44,362 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt6.c [2020-10-15 00:06:44,433 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/052be6062/1d1d41a8fca5483788d88aa0fce21631/FLAGb9609da7d [2020-10-15 00:06:44,895 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 00:06:44,896 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/sumt6.c [2020-10-15 00:06:44,902 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/052be6062/1d1d41a8fca5483788d88aa0fce21631/FLAGb9609da7d [2020-10-15 00:06:45,243 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/052be6062/1d1d41a8fca5483788d88aa0fce21631 [2020-10-15 00:06:45,254 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 00:06:45,256 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 00:06:45,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 00:06:45,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 00:06:45,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 00:06:45,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:06:45" (1/1) ... [2020-10-15 00:06:45,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21715d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:06:45, skipping insertion in model container [2020-10-15 00:06:45,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:06:45" (1/1) ... [2020-10-15 00:06:45,279 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 00:06:45,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 00:06:45,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:06:45,575 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 00:06:45,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:06:45,611 INFO L208 MainTranslator]: Completed translation [2020-10-15 00:06:45,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:06:45 WrapperNode [2020-10-15 00:06:45,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 00:06:45,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 00:06:45,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 00:06:45,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 00:06:45,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:06:45" (1/1) ... [2020-10-15 00:06:45,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:06:45" (1/1) ... [2020-10-15 00:06:45,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:06:45" (1/1) ... [2020-10-15 00:06:45,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:06:45" (1/1) ... [2020-10-15 00:06:45,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:06:45" (1/1) ... [2020-10-15 00:06:45,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:06:45" (1/1) ... [2020-10-15 00:06:45,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:06:45" (1/1) ... [2020-10-15 00:06:45,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 00:06:45,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 00:06:45,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 00:06:45,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 00:06:45,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:06:45" (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 [2020-10-15 00:06:45,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 00:06:45,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 00:06:45,792 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 00:06:45,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-15 00:06:45,792 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 00:06:45,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 00:06:45,792 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 00:06:45,793 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 00:06:45,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-15 00:06:45,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 00:06:45,793 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 00:06:45,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 00:06:45,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 00:06:46,180 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 00:06:46,181 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-15 00:06:46,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:06:46 BoogieIcfgContainer [2020-10-15 00:06:46,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 00:06:46,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 00:06:46,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 00:06:46,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 00:06:46,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:06:45" (1/3) ... [2020-10-15 00:06:46,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357da04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:06:46, skipping insertion in model container [2020-10-15 00:06:46,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:06:45" (2/3) ... [2020-10-15 00:06:46,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357da04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:06:46, skipping insertion in model container [2020-10-15 00:06:46,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:06:46" (3/3) ... [2020-10-15 00:06:46,199 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt6.c [2020-10-15 00:06:46,211 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 00:06:46,222 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 00:06:46,237 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 00:06:46,264 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 00:06:46,264 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 00:06:46,264 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 00:06:46,264 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 00:06:46,264 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 00:06:46,264 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 00:06:46,265 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 00:06:46,265 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 00:06:46,283 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-15 00:06:46,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 00:06:46,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:46,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:46,290 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:46,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:46,297 INFO L82 PathProgramCache]: Analyzing trace with hash 660851550, now seen corresponding path program 1 times [2020-10-15 00:06:46,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:46,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630404868] [2020-10-15 00:06:46,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:46,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:46,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:46,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:46,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 00:06:46,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:06:46,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-15 00:06:46,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:46,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:46,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:06:46,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:06:46,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 00:06:46,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 00:06:46,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:46,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:46,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:46,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:46,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:46,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:46,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:06:46,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:46,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:46,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:46,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:46,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:46,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:46,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:46,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630404868] [2020-10-15 00:06:46,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:06:46,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 00:06:46,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029057521] [2020-10-15 00:06:46,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 00:06:46,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:46,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 00:06:46,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:06:46,934 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2020-10-15 00:06:47,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:47,215 INFO L93 Difference]: Finished difference Result 52 states and 70 transitions. [2020-10-15 00:06:47,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 00:06:47,217 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-15 00:06:47,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:47,228 INFO L225 Difference]: With dead ends: 52 [2020-10-15 00:06:47,228 INFO L226 Difference]: Without dead ends: 25 [2020-10-15 00:06:47,232 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 [2020-10-15 00:06:47,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-15 00:06:47,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2020-10-15 00:06:47,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-15 00:06:47,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2020-10-15 00:06:47,275 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 12 [2020-10-15 00:06:47,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:47,276 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2020-10-15 00:06:47,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 00:06:47,276 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2020-10-15 00:06:47,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 00:06:47,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:47,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:47,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 00:06:47,278 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:47,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:47,279 INFO L82 PathProgramCache]: Analyzing trace with hash -2109978427, now seen corresponding path program 1 times [2020-10-15 00:06:47,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:47,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864757617] [2020-10-15 00:06:47,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:47,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:47,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:47,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:47,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-15 00:06:47,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:47,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-15 00:06:47,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:47,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:47,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:06:47,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:06:47,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 00:06:47,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:47,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:47,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:47,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:47,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:47,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:47,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:47,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:06:47,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:47,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:47,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:47,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:47,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:47,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:47,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:47,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864757617] [2020-10-15 00:06:47,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:47,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 00:06:47,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064992056] [2020-10-15 00:06:47,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:06:47,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:47,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:06:47,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:06:47,976 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand 8 states. [2020-10-15 00:06:48,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:48,210 INFO L93 Difference]: Finished difference Result 43 states and 60 transitions. [2020-10-15 00:06:48,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 00:06:48,211 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-10-15 00:06:48,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:48,212 INFO L225 Difference]: With dead ends: 43 [2020-10-15 00:06:48,212 INFO L226 Difference]: Without dead ends: 28 [2020-10-15 00:06:48,214 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 [2020-10-15 00:06:48,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-15 00:06:48,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2020-10-15 00:06:48,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-15 00:06:48,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2020-10-15 00:06:48,221 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 15 [2020-10-15 00:06:48,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:48,221 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2020-10-15 00:06:48,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:06:48,222 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2020-10-15 00:06:48,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-15 00:06:48,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:48,223 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:48,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 00:06:48,223 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:48,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:48,224 INFO L82 PathProgramCache]: Analyzing trace with hash -441848577, now seen corresponding path program 2 times [2020-10-15 00:06:48,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:48,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418493849] [2020-10-15 00:06:48,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:48,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:48,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:48,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:48,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:06:48,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:06:48,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-15 00:06:48,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:48,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:48,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:06:48,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:06:48,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:06:48,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:48,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:48,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:48,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:48,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:48,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:48,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:48,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:06:48,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:48,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:48,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:48,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:48,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:48,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:48,608 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:48,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418493849] [2020-10-15 00:06:48,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:48,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 00:06:48,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639781898] [2020-10-15 00:06:48,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:06:48,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:48,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:06:48,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:06:48,610 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand 5 states. [2020-10-15 00:06:48,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:48,760 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2020-10-15 00:06:48,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 00:06:48,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-15 00:06:48,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:48,761 INFO L225 Difference]: With dead ends: 37 [2020-10-15 00:06:48,762 INFO L226 Difference]: Without dead ends: 25 [2020-10-15 00:06:48,762 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 [2020-10-15 00:06:48,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-15 00:06:48,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2020-10-15 00:06:48,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-15 00:06:48,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2020-10-15 00:06:48,769 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 18 [2020-10-15 00:06:48,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:48,769 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2020-10-15 00:06:48,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:06:48,769 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2020-10-15 00:06:48,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 00:06:48,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:48,770 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:48,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 00:06:48,771 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:48,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:48,771 INFO L82 PathProgramCache]: Analyzing trace with hash -520861587, now seen corresponding path program 1 times [2020-10-15 00:06:48,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:48,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380281026] [2020-10-15 00:06:48,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:48,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:48,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:48,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 00:06:48,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:48,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-15 00:06:48,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:48,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:48,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:06:48,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:06:48,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 00:06:48,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:49,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:49,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:49,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:49,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:49,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:49,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:49,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:49,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:49,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:49,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:49,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:49,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 00:06:49,094 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:49,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380281026] [2020-10-15 00:06:49,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:49,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 00:06:49,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911365545] [2020-10-15 00:06:49,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:06:49,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:49,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:06:49,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:06:49,099 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 5 states. [2020-10-15 00:06:49,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:49,258 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2020-10-15 00:06:49,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 00:06:49,261 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-15 00:06:49,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:49,263 INFO L225 Difference]: With dead ends: 41 [2020-10-15 00:06:49,263 INFO L226 Difference]: Without dead ends: 29 [2020-10-15 00:06:49,264 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 [2020-10-15 00:06:49,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-15 00:06:49,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2020-10-15 00:06:49,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-15 00:06:49,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2020-10-15 00:06:49,273 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 19 [2020-10-15 00:06:49,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:49,274 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2020-10-15 00:06:49,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:06:49,274 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2020-10-15 00:06:49,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-15 00:06:49,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:49,275 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:49,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 00:06:49,276 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:49,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:49,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1467253508, now seen corresponding path program 1 times [2020-10-15 00:06:49,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:49,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339250875] [2020-10-15 00:06:49,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:49,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:49,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:49,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:49,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:06:49,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:06:49,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-15 00:06:49,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:49,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:49,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:06:49,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:06:49,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 00:06:49,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:49,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:49,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:49,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:49,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:49,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:49,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:49,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:49,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:49,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:49,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:49,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:49,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:49,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:49,634 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:49,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339250875] [2020-10-15 00:06:49,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:49,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 00:06:49,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653831591] [2020-10-15 00:06:49,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:06:49,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:49,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:06:49,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:06:49,637 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand 5 states. [2020-10-15 00:06:49,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:49,744 INFO L93 Difference]: Finished difference Result 41 states and 54 transitions. [2020-10-15 00:06:49,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 00:06:49,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-15 00:06:49,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:49,746 INFO L225 Difference]: With dead ends: 41 [2020-10-15 00:06:49,746 INFO L226 Difference]: Without dead ends: 29 [2020-10-15 00:06:49,747 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 [2020-10-15 00:06:49,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-15 00:06:49,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2020-10-15 00:06:49,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-15 00:06:49,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2020-10-15 00:06:49,753 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 20 [2020-10-15 00:06:49,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:49,753 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2020-10-15 00:06:49,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:06:49,753 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2020-10-15 00:06:49,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 00:06:49,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:49,754 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:49,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 00:06:49,755 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:49,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:49,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1183136878, now seen corresponding path program 1 times [2020-10-15 00:06:49,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:49,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749496602] [2020-10-15 00:06:49,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:49,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:49,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:50,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:50,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:50,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-15 00:06:50,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:06:50,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 685 [2020-10-15 00:06:50,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:50,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:50,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:06:50,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:06:50,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 00:06:50,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:50,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:50,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:50,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:50,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:50,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:50,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:50,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:50,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:50,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:50,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:50,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:50,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:50,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:50,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:50,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749496602] [2020-10-15 00:06:50,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:50,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 00:06:50,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584281685] [2020-10-15 00:06:50,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:06:50,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:50,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:06:50,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:06:50,571 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 5 states. [2020-10-15 00:06:50,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:50,698 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2020-10-15 00:06:50,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 00:06:50,699 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-15 00:06:50,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:50,700 INFO L225 Difference]: With dead ends: 40 [2020-10-15 00:06:50,700 INFO L226 Difference]: Without dead ends: 28 [2020-10-15 00:06:50,701 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 [2020-10-15 00:06:50,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-15 00:06:50,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-15 00:06:50,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-15 00:06:50,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2020-10-15 00:06:50,707 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 21 [2020-10-15 00:06:50,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:50,707 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2020-10-15 00:06:50,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:06:50,707 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2020-10-15 00:06:50,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-15 00:06:50,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:50,708 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] [2020-10-15 00:06:50,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 00:06:50,709 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:50,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:50,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1598309111, now seen corresponding path program 1 times [2020-10-15 00:06:50,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:50,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963609576] [2020-10-15 00:06:50,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:50,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:53,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:53,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:53,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 00:06:53,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:06:53,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2438 [2020-10-15 00:06:53,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:53,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:53,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:06:53,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:06:53,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 00:06:53,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:53,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:53,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:53,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:53,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:53,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:53,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:53,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:53,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:53,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:53,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:53,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:53,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:53,235 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:53,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963609576] [2020-10-15 00:06:53,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:53,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 00:06:53,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982849380] [2020-10-15 00:06:53,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:06:53,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:53,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:06:53,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:06:53,237 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand 5 states. [2020-10-15 00:06:53,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:53,341 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2020-10-15 00:06:53,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 00:06:53,342 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-15 00:06:53,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:53,343 INFO L225 Difference]: With dead ends: 41 [2020-10-15 00:06:53,343 INFO L226 Difference]: Without dead ends: 29 [2020-10-15 00:06:53,343 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 [2020-10-15 00:06:53,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-15 00:06:53,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-15 00:06:53,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-15 00:06:53,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-10-15 00:06:53,349 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 22 [2020-10-15 00:06:53,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:53,349 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-10-15 00:06:53,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:06:53,350 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-10-15 00:06:53,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-15 00:06:53,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:53,351 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] [2020-10-15 00:06:53,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 00:06:53,351 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:53,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:53,352 INFO L82 PathProgramCache]: Analyzing trace with hash 176698251, now seen corresponding path program 1 times [2020-10-15 00:06:53,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:53,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695470290] [2020-10-15 00:06:53,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:53,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:53,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:07,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:07,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 00:07:07,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:07,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13777 [2020-10-15 00:07:07,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:07,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:07,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:07:07,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:07:07,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:07:07,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:07,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:07,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:07,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:07,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:07,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:07,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:07,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:07,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:07,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:07,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:07,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:07,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:07,262 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 00:07:07,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695470290] [2020-10-15 00:07:07,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:07,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 00:07:07,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842066892] [2020-10-15 00:07:07,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:07:07,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:07,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:07:07,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:07:07,265 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 8 states. [2020-10-15 00:07:09,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:09,491 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2020-10-15 00:07:09,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 00:07:09,491 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-10-15 00:07:09,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:09,492 INFO L225 Difference]: With dead ends: 28 [2020-10-15 00:07:09,492 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 00:07:09,493 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 [2020-10-15 00:07:09,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 00:07:09,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 00:07:09,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 00:07:09,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 00:07:09,494 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-10-15 00:07:09,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:09,494 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 00:07:09,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:07:09,495 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 00:07:09,495 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 00:07:09,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 00:07:09,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-15 00:07:09,644 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-15 00:07:09,644 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-10-15 00:07:09,645 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-15 00:07:09,645 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-15 00:07:09,645 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-15 00:07:09,645 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-15 00:07:09,645 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-15 00:07:09,645 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-10-15 00:07:09,645 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-15 00:07:09,645 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-10-15 00:07:09,646 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-10-15 00:07:09,646 INFO L268 CegarLoopResult]: For program point L29(lines 29 32) no Hoare annotation was computed. [2020-10-15 00:07:09,646 INFO L268 CegarLoopResult]: For program point L27(lines 27 32) no Hoare annotation was computed. [2020-10-15 00:07:09,646 INFO L268 CegarLoopResult]: For program point L29-2(lines 21 32) no Hoare annotation was computed. [2020-10-15 00:07:09,646 INFO L268 CegarLoopResult]: For program point L25(lines 25 32) no Hoare annotation was computed. [2020-10-15 00:07:09,646 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 37) no Hoare annotation was computed. [2020-10-15 00:07:09,646 INFO L268 CegarLoopResult]: For program point L23(lines 23 32) no Hoare annotation was computed. [2020-10-15 00:07:09,647 INFO L268 CegarLoopResult]: For program point L21(lines 21 32) no Hoare annotation was computed. [2020-10-15 00:07:09,647 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))) [2020-10-15 00:07:09,647 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)))) [2020-10-15 00:07:09,647 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 37) no Hoare annotation was computed. [2020-10-15 00:07:09,647 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 37) the Hoare annotation is: true [2020-10-15 00:07:09,648 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-10-15 00:07:09,648 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-10-15 00:07:09,648 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-10-15 00:07:09,648 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-10-15 00:07:09,648 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-15 00:07:09,648 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-10-15 00:07:09,648 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-10-15 00:07:09,648 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-10-15 00:07:09,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 12:07:09 BoogieIcfgContainer [2020-10-15 00:07:09,690 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 00:07:09,695 INFO L168 Benchmark]: Toolchain (without parser) took 24436.19 ms. Allocated memory was 147.8 MB in the beginning and 503.8 MB in the end (delta: 356.0 MB). Free memory was 104.3 MB in the beginning and 469.7 MB in the end (delta: -365.4 MB). Peak memory consumption was 360.8 MB. Max. memory is 7.1 GB. [2020-10-15 00:07:09,696 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-15 00:07:09,696 INFO L168 Benchmark]: CACSL2BoogieTranslator took 355.59 ms. Allocated memory is still 147.8 MB. Free memory was 103.8 MB in the beginning and 93.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-10-15 00:07:09,699 INFO L168 Benchmark]: Boogie Preprocessor took 119.10 ms. Allocated memory was 147.8 MB in the beginning and 202.9 MB in the end (delta: 55.1 MB). Free memory was 93.9 MB in the beginning and 181.6 MB in the end (delta: -87.7 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-10-15 00:07:09,700 INFO L168 Benchmark]: RCFGBuilder took 453.97 ms. Allocated memory is still 202.9 MB. Free memory was 181.6 MB in the beginning and 165.3 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. [2020-10-15 00:07:09,702 INFO L168 Benchmark]: TraceAbstraction took 23499.64 ms. Allocated memory was 202.9 MB in the beginning and 503.8 MB in the end (delta: 300.9 MB). Free memory was 165.3 MB in the beginning and 469.7 MB in the end (delta: -304.3 MB). Peak memory consumption was 366.8 MB. Max. memory is 7.1 GB. [2020-10-15 00:07:09,710 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 355.59 ms. Allocated memory is still 147.8 MB. Free memory was 103.8 MB in the beginning and 93.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.10 ms. Allocated memory was 147.8 MB in the beginning and 202.9 MB in the end (delta: 55.1 MB). Free memory was 93.9 MB in the beginning and 181.6 MB in the end (delta: -87.7 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 453.97 ms. Allocated memory is still 202.9 MB. Free memory was 181.6 MB in the beginning and 165.3 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 23499.64 ms. Allocated memory was 202.9 MB in the beginning and 503.8 MB in the end (delta: 300.9 MB). Free memory was 165.3 MB in the beginning and 469.7 MB in the end (delta: -304.3 MB). Peak memory consumption was 366.8 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: 23.2s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 96 SDtfs, 255 SDslu, 152 SDs, 0 SdLazy, 486 SolverSat, 61 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 20 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 16 PreInvPairs, 22 NumberOfFragments, 89 HoareAnnotationTreeSize, 16 FomulaSimplifications, 313 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 117 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 19.3s InterpolantComputationTime, 149 NumberOfCodeBlocks, 149 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 141 ConstructedInterpolants, 0 QuantifiedInterpolants, 25729 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 1 PerfectInterpolantSequences, 18/31 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...