/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/sumt7.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 00:06:54,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 00:06:54,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 00:06:54,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 00:06:54,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 00:06:54,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 00:06:54,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 00:06:54,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 00:06:54,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 00:06:54,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 00:06:54,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 00:06:54,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 00:06:54,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 00:06:54,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 00:06:54,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 00:06:54,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 00:06:54,980 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 00:06:54,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 00:06:54,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 00:06:54,984 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 00:06:54,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 00:06:54,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 00:06:54,988 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 00:06:54,988 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 00:06:54,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 00:06:54,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 00:06:54,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 00:06:54,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 00:06:54,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 00:06:54,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 00:06:54,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 00:06:54,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 00:06:54,995 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 00:06:54,996 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 00:06:54,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 00:06:54,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 00:06:54,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 00:06:54,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 00:06:54,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 00:06:54,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 00:06:55,000 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 00:06:55,001 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 00:06:55,023 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 00:06:55,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 00:06:55,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 00:06:55,025 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 00:06:55,025 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 00:06:55,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 00:06:55,025 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 00:06:55,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 00:06:55,026 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 00:06:55,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 00:06:55,026 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 00:06:55,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 00:06:55,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 00:06:55,027 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 00:06:55,027 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 00:06:55,027 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 00:06:55,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 00:06:55,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 00:06:55,028 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 00:06:55,028 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 00:06:55,028 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 00:06:55,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 00:06:55,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 00:06:55,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 00:06:55,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 00:06:55,029 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 00:06:55,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 00:06:55,029 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 00:06:55,030 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 00:06:55,030 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 00:06:55,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 00:06:55,365 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 00:06:55,372 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 00:06:55,375 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 00:06:55,375 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 00:06:55,376 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt7.c [2020-10-15 00:06:55,452 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a69dd5e5/c9a7f04b52014eb5b09e80c40152afd0/FLAGc188435ce [2020-10-15 00:06:55,881 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 00:06:55,881 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/sumt7.c [2020-10-15 00:06:55,889 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a69dd5e5/c9a7f04b52014eb5b09e80c40152afd0/FLAGc188435ce [2020-10-15 00:06:56,260 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a69dd5e5/c9a7f04b52014eb5b09e80c40152afd0 [2020-10-15 00:06:56,269 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 00:06:56,271 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 00:06:56,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 00:06:56,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 00:06:56,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 00:06:56,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:06:56" (1/1) ... [2020-10-15 00:06:56,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@112bbb30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:06:56, skipping insertion in model container [2020-10-15 00:06:56,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:06:56" (1/1) ... [2020-10-15 00:06:56,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 00:06:56,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 00:06:56,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:06:56,526 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 00:06:56,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:06:56,583 INFO L208 MainTranslator]: Completed translation [2020-10-15 00:06:56,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:06:56 WrapperNode [2020-10-15 00:06:56,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 00:06:56,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 00:06:56,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 00:06:56,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 00:06:56,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:06:56" (1/1) ... [2020-10-15 00:06:56,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:06:56" (1/1) ... [2020-10-15 00:06:56,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:06:56" (1/1) ... [2020-10-15 00:06:56,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:06:56" (1/1) ... [2020-10-15 00:06:56,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:06:56" (1/1) ... [2020-10-15 00:06:56,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:06:56" (1/1) ... [2020-10-15 00:06:56,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:06:56" (1/1) ... [2020-10-15 00:06:56,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 00:06:56,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 00:06:56,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 00:06:56,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 00:06:56,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:06:56" (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 00:06:56,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 00:06:56,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 00:06:56,797 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 00:06:56,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-15 00:06:56,797 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 00:06:56,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 00:06:56,799 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 00:06:56,800 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 00:06:56,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-15 00:06:56,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 00:06:56,800 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 00:06:56,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 00:06:56,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 00:06:57,068 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 00:06:57,069 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-15 00:06:57,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:06:57 BoogieIcfgContainer [2020-10-15 00:06:57,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 00:06:57,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 00:06:57,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 00:06:57,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 00:06:57,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:06:56" (1/3) ... [2020-10-15 00:06:57,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3ae141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:06:57, skipping insertion in model container [2020-10-15 00:06:57,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:06:56" (2/3) ... [2020-10-15 00:06:57,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3ae141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:06:57, skipping insertion in model container [2020-10-15 00:06:57,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:06:57" (3/3) ... [2020-10-15 00:06:57,082 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt7.c [2020-10-15 00:06:57,093 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 00:06:57,101 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 00:06:57,116 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 00:06:57,142 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 00:06:57,142 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 00:06:57,142 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 00:06:57,142 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 00:06:57,142 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 00:06:57,142 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 00:06:57,143 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 00:06:57,143 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 00:06:57,162 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-15 00:06:57,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 00:06:57,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:57,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:57,170 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:57,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:57,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1473118151, now seen corresponding path program 1 times [2020-10-15 00:06:57,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:57,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848441998] [2020-10-15 00:06:57,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:57,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:57,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:57,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 00:06:57,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:57,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 397 [2020-10-15 00:06:57,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:57,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:57,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:06:57,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:06:57,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 00:06:57,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 00:06:57,959 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 14 [2020-10-15 00:06:58,177 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 27 [2020-10-15 00:06:58,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:58,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:58,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:58,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:58,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:58,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:06:58,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:58,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:58,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:58,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:58,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:58,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:58,252 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 00:06:58,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848441998] [2020-10-15 00:06:58,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:06:58,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 00:06:58,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700283557] [2020-10-15 00:06:58,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:06:58,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:58,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:06:58,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:06:58,283 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 8 states. [2020-10-15 00:07:00,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:00,842 INFO L93 Difference]: Finished difference Result 68 states and 99 transitions. [2020-10-15 00:07:00,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 00:07:00,844 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-10-15 00:07:00,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:00,854 INFO L225 Difference]: With dead ends: 68 [2020-10-15 00:07:00,855 INFO L226 Difference]: Without dead ends: 37 [2020-10-15 00:07:00,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:07:00,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-15 00:07:00,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2020-10-15 00:07:00,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-15 00:07:00,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-10-15 00:07:00,902 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 14 [2020-10-15 00:07:00,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:00,903 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-10-15 00:07:00,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:07:00,903 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-10-15 00:07:00,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-15 00:07:00,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:00,904 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:00,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 00:07:00,905 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:00,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:00,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1990755954, now seen corresponding path program 1 times [2020-10-15 00:07:00,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:00,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727027105] [2020-10-15 00:07:00,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:00,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:01,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:01,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:01,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:01,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:01,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-15 00:07:01,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:07:01,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 961 [2020-10-15 00:07:01,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:01,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:01,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:07:01,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:07:01,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:07:01,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 00:07:02,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:02,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:02,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:02,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:02,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:02,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:02,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:07:02,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:02,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:02,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:02,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:02,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:02,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:02,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-15 00:07:02,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:02,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:02,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:02,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:02,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:02,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 00:07:02,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:02,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:02,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:02,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:02,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:07:02,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:02,048 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:07:02,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727027105] [2020-10-15 00:07:02,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:02,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 00:07:02,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648860087] [2020-10-15 00:07:02,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:07:02,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:02,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:07:02,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:07:02,053 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 5 states. [2020-10-15 00:07:02,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:02,275 INFO L93 Difference]: Finished difference Result 53 states and 71 transitions. [2020-10-15 00:07:02,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 00:07:02,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-15 00:07:02,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:02,278 INFO L225 Difference]: With dead ends: 53 [2020-10-15 00:07:02,278 INFO L226 Difference]: Without dead ends: 38 [2020-10-15 00:07:02,279 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 [2020-10-15 00:07:02,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-15 00:07:02,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2020-10-15 00:07:02,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-15 00:07:02,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-10-15 00:07:02,288 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 22 [2020-10-15 00:07:02,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:02,289 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-10-15 00:07:02,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:07:02,289 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-10-15 00:07:02,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 00:07:02,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:02,290 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:02,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 00:07:02,291 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:02,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:02,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1643040600, now seen corresponding path program 1 times [2020-10-15 00:07:02,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:02,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415403024] [2020-10-15 00:07:02,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:02,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:03,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:04,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:04,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:04,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-15 00:07:04,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:07:04,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2304 [2020-10-15 00:07:04,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:04,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:04,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:07:04,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:07:04,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 00:07:04,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:04,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:04,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:04,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:04,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:04,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:04,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:04,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:04,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:04,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:04,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:04,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:04,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:04,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:04,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-15 00:07:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:04,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:04,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:04,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:04,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:04,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 00:07:04,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:04,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:04,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:04,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:04,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:07:04,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:04,794 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:07:04,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415403024] [2020-10-15 00:07:04,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:04,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 00:07:04,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102615426] [2020-10-15 00:07:04,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:07:04,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:04,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:07:04,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:07:04,797 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 5 states. [2020-10-15 00:07:05,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:05,003 INFO L93 Difference]: Finished difference Result 53 states and 70 transitions. [2020-10-15 00:07:05,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 00:07:05,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-15 00:07:05,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:05,005 INFO L225 Difference]: With dead ends: 53 [2020-10-15 00:07:05,005 INFO L226 Difference]: Without dead ends: 38 [2020-10-15 00:07:05,006 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 [2020-10-15 00:07:05,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-15 00:07:05,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2020-10-15 00:07:05,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-15 00:07:05,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-10-15 00:07:05,014 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 23 [2020-10-15 00:07:05,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:05,015 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-10-15 00:07:05,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:07:05,015 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-10-15 00:07:05,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-15 00:07:05,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:05,016 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] [2020-10-15 00:07:05,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 00:07:05,017 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:05,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:05,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1816528973, now seen corresponding path program 1 times [2020-10-15 00:07:05,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:05,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086448515] [2020-10-15 00:07:05,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:05,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:05,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:19,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:19,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-15 00:07:19,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:07:19,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14921 [2020-10-15 00:07:19,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:19,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:19,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:07:19,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:07:19,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:07:19,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:20,120 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 21 [2020-10-15 00:07:20,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:20,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:20,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:20,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:20,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:20,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:20,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:07:20,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:20,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:20,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:20,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:20,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:20,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:20,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-15 00:07:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:20,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:20,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:20,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:20,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:20,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 00:07:20,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:20,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:20,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:20,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:20,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:07:20,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:20,172 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:07:20,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086448515] [2020-10-15 00:07:20,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:20,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 00:07:20,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162666555] [2020-10-15 00:07:20,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:07:20,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:20,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:07:20,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:07:20,177 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 5 states. [2020-10-15 00:07:20,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:20,410 INFO L93 Difference]: Finished difference Result 53 states and 69 transitions. [2020-10-15 00:07:20,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 00:07:20,410 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-15 00:07:20,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:20,411 INFO L225 Difference]: With dead ends: 53 [2020-10-15 00:07:20,412 INFO L226 Difference]: Without dead ends: 38 [2020-10-15 00:07:20,413 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 [2020-10-15 00:07:20,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-15 00:07:20,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-10-15 00:07:20,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-15 00:07:20,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2020-10-15 00:07:20,427 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 24 [2020-10-15 00:07:20,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:20,427 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2020-10-15 00:07:20,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:07:20,428 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2020-10-15 00:07:20,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 00:07:20,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:20,430 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] [2020-10-15 00:07:20,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 00:07:20,431 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:20,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:20,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1832149091, now seen corresponding path program 1 times [2020-10-15 00:07:20,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:20,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451601259] [2020-10-15 00:07:20,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:20,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:39,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:39,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-15 00:07:39,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:39,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19364 [2020-10-15 00:07:39,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:39,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:39,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:07:39,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:07:39,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:07:39,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:39,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:39,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:39,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:39,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:39,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:39,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:39,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:39,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:39,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:39,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:39,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:39,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:39,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-15 00:07:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:39,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:39,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:39,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:39,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:39,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:07:39,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:39,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:39,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:39,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:39,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:07:39,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:39,912 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:07:39,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451601259] [2020-10-15 00:07:39,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:39,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 00:07:39,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980195714] [2020-10-15 00:07:39,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:07:39,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:39,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:07:39,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:07:39,914 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 5 states. [2020-10-15 00:07:40,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:40,056 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2020-10-15 00:07:40,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 00:07:40,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-15 00:07:40,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:40,058 INFO L225 Difference]: With dead ends: 53 [2020-10-15 00:07:40,058 INFO L226 Difference]: Without dead ends: 38 [2020-10-15 00:07:40,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 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 00:07:40,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-15 00:07:40,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2020-10-15 00:07:40,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-15 00:07:40,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-10-15 00:07:40,066 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 25 [2020-10-15 00:07:40,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:40,066 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-10-15 00:07:40,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:07:40,067 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-10-15 00:07:40,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-15 00:07:40,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:40,068 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] [2020-10-15 00:07:40,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 00:07:40,068 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:40,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:40,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1835448792, now seen corresponding path program 1 times [2020-10-15 00:07:40,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:40,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035011662] [2020-10-15 00:07:40,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:40,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:40,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:04,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:04,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-15 00:08:04,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:04,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24883 [2020-10-15 00:08:04,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:04,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:04,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:08:04,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:08:04,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:08:04,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:05,251 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 26 [2020-10-15 00:08:05,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:05,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:05,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:05,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:05,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:05,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:05,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:05,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:05,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:05,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:05,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:05,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:05,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-15 00:08:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:05,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:05,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:05,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:05,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:05,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 00:08:05,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:05,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:05,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:08:05,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:05,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:08:05,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:05,306 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:05,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035011662] [2020-10-15 00:08:05,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:05,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 00:08:05,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209766803] [2020-10-15 00:08:05,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:08:05,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:05,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:08:05,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:08:05,310 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 5 states. [2020-10-15 00:08:09,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:09,687 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2020-10-15 00:08:09,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 00:08:09,687 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-15 00:08:09,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:09,688 INFO L225 Difference]: With dead ends: 54 [2020-10-15 00:08:09,689 INFO L226 Difference]: Without dead ends: 39 [2020-10-15 00:08:09,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:08:09,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-15 00:08:09,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-10-15 00:08:09,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-15 00:08:09,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2020-10-15 00:08:09,697 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 26 [2020-10-15 00:08:09,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:09,697 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2020-10-15 00:08:09,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:08:09,697 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2020-10-15 00:08:09,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 00:08:09,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:09,698 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] [2020-10-15 00:08:09,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 00:08:09,699 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:09,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:09,699 INFO L82 PathProgramCache]: Analyzing trace with hash 576279582, now seen corresponding path program 1 times [2020-10-15 00:08:09,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:09,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912273567] [2020-10-15 00:08:09,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:09,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:10,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:45,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:45,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 00:08:45,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:08:45,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35418 [2020-10-15 00:08:45,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:45,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:45,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:08:45,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:08:45,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:08:45,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:45,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:45,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:45,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:45,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:45,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:45,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:45,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:45,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:45,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:45,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:45,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:45,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:45,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-15 00:08:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:45,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:45,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:45,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:45,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:45,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:08:45,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:45,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:45,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:08:45,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:45,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:08:45,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:45,229 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:45,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912273567] [2020-10-15 00:08:45,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:45,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 00:08:45,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149985174] [2020-10-15 00:08:45,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:08:45,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:45,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:08:45,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:08:45,231 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 5 states. [2020-10-15 00:08:45,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:45,371 INFO L93 Difference]: Finished difference Result 53 states and 66 transitions. [2020-10-15 00:08:45,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 00:08:45,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-10-15 00:08:45,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:45,373 INFO L225 Difference]: With dead ends: 53 [2020-10-15 00:08:45,373 INFO L226 Difference]: Without dead ends: 38 [2020-10-15 00:08:45,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 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 00:08:45,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-15 00:08:45,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-15 00:08:45,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-15 00:08:45,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2020-10-15 00:08:45,382 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 27 [2020-10-15 00:08:45,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:45,383 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2020-10-15 00:08:45,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:08:45,383 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2020-10-15 00:08:45,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 00:08:45,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:45,384 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] [2020-10-15 00:08:45,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 00:08:45,384 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:45,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:45,385 INFO L82 PathProgramCache]: Analyzing trace with hash 633537884, now seen corresponding path program 1 times [2020-10-15 00:08:45,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:45,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143160306] [2020-10-15 00:08:45,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:45,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:45,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:45,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:59,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:59,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 00:08:59,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:08:59,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13987 [2020-10-15 00:08:59,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:59,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:59,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:08:59,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:08:59,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 00:08:59,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:59,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:59,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:59,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:59,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:59,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:59,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:08:59,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:59,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:59,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:59,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:59,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:59,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 00:08:59,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-15 00:08:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:59,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:59,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:59,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:59,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:59,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 00:08:59,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:59,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:59,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:08:59,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:59,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:08:59,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 00:08:59,583 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 00:08:59,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143160306] [2020-10-15 00:08:59,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:59,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 00:08:59,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897225664] [2020-10-15 00:08:59,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:08:59,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:59,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:08:59,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:08:59,587 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand 8 states. [2020-10-15 00:08:59,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:59,782 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2020-10-15 00:08:59,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 00:08:59,783 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-10-15 00:08:59,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:59,783 INFO L225 Difference]: With dead ends: 37 [2020-10-15 00:08:59,783 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 00:08:59,785 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 [2020-10-15 00:08:59,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 00:08:59,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 00:08:59,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 00:08:59,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 00:08:59,785 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2020-10-15 00:08:59,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:59,786 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 00:08:59,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:08:59,786 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 00:08:59,786 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 00:08:59,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 00:08:59,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-15 00:08:59,900 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-15 00:08:59,900 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-10-15 00:08:59,900 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-15 00:08:59,901 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-15 00:08:59,901 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-15 00:08:59,901 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-15 00:08:59,901 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-15 00:08:59,901 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-10-15 00:08:59,902 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-15 00:08:59,902 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-10-15 00:08:59,902 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-10-15 00:08:59,902 INFO L268 CegarLoopResult]: For program point L31(lines 31 34) no Hoare annotation was computed. [2020-10-15 00:08:59,902 INFO L268 CegarLoopResult]: For program point L29(lines 29 34) no Hoare annotation was computed. [2020-10-15 00:08:59,902 INFO L268 CegarLoopResult]: For program point L31-2(lines 21 34) no Hoare annotation was computed. [2020-10-15 00:08:59,902 INFO L268 CegarLoopResult]: For program point L27(lines 27 34) no Hoare annotation was computed. [2020-10-15 00:08:59,903 INFO L268 CegarLoopResult]: For program point L25(lines 25 34) no Hoare annotation was computed. [2020-10-15 00:08:59,903 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 39) no Hoare annotation was computed. [2020-10-15 00:08:59,903 INFO L268 CegarLoopResult]: For program point L23(lines 23 34) no Hoare annotation was computed. [2020-10-15 00:08:59,903 INFO L268 CegarLoopResult]: For program point L21(lines 21 34) no Hoare annotation was computed. [2020-10-15 00:08:59,903 INFO L268 CegarLoopResult]: For program point L19-2(lines 19 37) no Hoare annotation was computed. [2020-10-15 00:08:59,903 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 39) no Hoare annotation was computed. [2020-10-15 00:08:59,903 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))) [2020-10-15 00:08:59,904 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))) [2020-10-15 00:08:59,904 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 39) the Hoare annotation is: true [2020-10-15 00:08:59,904 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-10-15 00:08:59,904 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-10-15 00:08:59,904 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-10-15 00:08:59,904 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-15 00:08:59,904 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-10-15 00:08:59,905 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-10-15 00:08:59,905 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-10-15 00:08:59,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 12:08:59 BoogieIcfgContainer [2020-10-15 00:08:59,943 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 00:08:59,953 INFO L168 Benchmark]: Toolchain (without parser) took 123674.59 ms. Allocated memory was 145.2 MB in the beginning and 853.0 MB in the end (delta: 707.8 MB). Free memory was 101.7 MB in the beginning and 170.0 MB in the end (delta: -68.3 MB). Peak memory consumption was 639.5 MB. Max. memory is 7.1 GB. [2020-10-15 00:08:59,954 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 119.8 MB in the beginning and 119.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-15 00:08:59,955 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.29 ms. Allocated memory is still 145.2 MB. Free memory was 101.7 MB in the beginning and 91.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-10-15 00:08:59,956 INFO L168 Benchmark]: Boogie Preprocessor took 127.24 ms. Allocated memory was 145.2 MB in the beginning and 201.3 MB in the end (delta: 56.1 MB). Free memory was 91.7 MB in the beginning and 179.6 MB in the end (delta: -87.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-10-15 00:08:59,957 INFO L168 Benchmark]: RCFGBuilder took 354.24 ms. Allocated memory is still 201.3 MB. Free memory was 179.6 MB in the beginning and 163.9 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. [2020-10-15 00:08:59,960 INFO L168 Benchmark]: TraceAbstraction took 122868.62 ms. Allocated memory was 201.3 MB in the beginning and 853.0 MB in the end (delta: 651.7 MB). Free memory was 163.9 MB in the beginning and 170.0 MB in the end (delta: -6.1 MB). Peak memory consumption was 645.6 MB. Max. memory is 7.1 GB. [2020-10-15 00:08:59,964 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 145.2 MB. Free memory was 119.8 MB in the beginning and 119.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 319.29 ms. Allocated memory is still 145.2 MB. Free memory was 101.7 MB in the beginning and 91.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.24 ms. Allocated memory was 145.2 MB in the beginning and 201.3 MB in the end (delta: 56.1 MB). Free memory was 91.7 MB in the beginning and 179.6 MB in the end (delta: -87.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 354.24 ms. Allocated memory is still 201.3 MB. Free memory was 179.6 MB in the beginning and 163.9 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 122868.62 ms. Allocated memory was 201.3 MB in the beginning and 853.0 MB in the end (delta: 651.7 MB). Free memory was 163.9 MB in the beginning and 170.0 MB in the end (delta: -6.1 MB). Peak memory consumption was 645.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 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: 122.6s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 8.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 109 SDtfs, 311 SDslu, 157 SDs, 0 SdLazy, 603 SolverSat, 71 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 7.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 29 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 15 PreInvPairs, 20 NumberOfFragments, 49 HoareAnnotationTreeSize, 15 FomulaSimplifications, 700 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 39 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 113.9s InterpolantComputationTime, 188 NumberOfCodeBlocks, 188 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 42399 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 1 PerfectInterpolantSequences, 29/42 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...