/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:25:25,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:25:25,877 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:25:25,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:25:25,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:25:25,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:25:25,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:25:25,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:25:25,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:25:25,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:25:25,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:25:25,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:25:25,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:25:25,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:25:25,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:25:25,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:25:25,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:25:25,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:25:25,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:25:25,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:25:25,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:25:25,951 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:25:25,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:25:25,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:25:25,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:25:25,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:25:25,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:25:25,958 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:25:25,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:25:25,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:25:25,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:25:25,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:25:25,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:25:25,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:25:25,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:25:25,965 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:25:25,966 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:25:25,966 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:25:25,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:25:25,967 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:25:25,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:25:25,969 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:25:25,997 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:25:25,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:25:25,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:25:25,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:25:25,999 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:25:25,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:25:25,999 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:25:26,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:25:26,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:25:26,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:25:26,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:25:26,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:25:26,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:25:26,001 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:25:26,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:25:26,001 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:25:26,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:25:26,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:25:26,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:25:26,002 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:25:26,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:25:26,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:25:26,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:25:26,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:25:26,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:25:26,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:25:26,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:25:26,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:25:26,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:25:26,004 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:25:26,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:25:26,536 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:25:26,541 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:25:26,543 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:25:26,543 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:25:26,545 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.i [2020-09-25 11:25:26,644 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/486e27431/4ed6530412b540928493d5ad2681dc1b/FLAG57d82d5b6 [2020-09-25 11:25:27,215 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:25:27,215 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/gsv2008.i [2020-09-25 11:25:27,222 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/486e27431/4ed6530412b540928493d5ad2681dc1b/FLAG57d82d5b6 [2020-09-25 11:25:27,557 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/486e27431/4ed6530412b540928493d5ad2681dc1b [2020-09-25 11:25:27,570 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:25:27,575 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:25:27,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:25:27,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:25:27,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:25:27,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:25:27" (1/1) ... [2020-09-25 11:25:27,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@291cbb33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:25:27, skipping insertion in model container [2020-09-25 11:25:27,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:25:27" (1/1) ... [2020-09-25 11:25:27,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:25:27,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:25:27,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:25:27,840 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:25:27,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:25:27,880 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:25:27,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:25:27 WrapperNode [2020-09-25 11:25:27,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:25:27,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:25:27,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:25:27,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:25:27,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:25:27" (1/1) ... [2020-09-25 11:25:27,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:25:27" (1/1) ... [2020-09-25 11:25:27,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:25:27" (1/1) ... [2020-09-25 11:25:27,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:25:27" (1/1) ... [2020-09-25 11:25:27,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:25:27" (1/1) ... [2020-09-25 11:25:27,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:25:27" (1/1) ... [2020-09-25 11:25:27,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:25:27" (1/1) ... [2020-09-25 11:25:27,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:25:27,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:25:27,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:25:27,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:25:27,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:25:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:25:28,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:25:28,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:25:28,087 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 11:25:28,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 11:25:28,088 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:25:28,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:25:28,088 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 11:25:28,088 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 11:25:28,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 11:25:28,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:25:28,090 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:25:28,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:25:28,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:25:28,340 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:25:28,340 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:25:28,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:25:28 BoogieIcfgContainer [2020-09-25 11:25:28,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:25:28,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:25:28,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:25:28,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:25:28,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:25:27" (1/3) ... [2020-09-25 11:25:28,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7e53ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:25:28, skipping insertion in model container [2020-09-25 11:25:28,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:25:27" (2/3) ... [2020-09-25 11:25:28,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7e53ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:25:28, skipping insertion in model container [2020-09-25 11:25:28,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:25:28" (3/3) ... [2020-09-25 11:25:28,385 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.i [2020-09-25 11:25:28,402 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:25:28,413 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:25:28,435 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:25:28,466 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:25:28,467 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:25:28,467 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:25:28,467 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:25:28,467 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:25:28,467 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:25:28,468 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:25:28,468 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:25:28,493 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-09-25 11:25:28,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 11:25:28,501 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:25:28,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:25:28,502 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:25:28,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:25:28,509 INFO L82 PathProgramCache]: Analyzing trace with hash 2104509233, now seen corresponding path program 1 times [2020-09-25 11:25:28,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:25:28,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911968879] [2020-09-25 11:25:28,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:25:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:28,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:28,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:28,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:25:28,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:28,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 11:25:28,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:28,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:28,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:25:28,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:25:28,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:25:28,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:25:28,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:25:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:28,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:28,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:28,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:25:28,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:28,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:25:28,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:28,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:28,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:25:28,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:28,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:25:28,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:28,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:25:28,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911968879] [2020-09-25 11:25:28,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:25:28,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-25 11:25:28,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021618836] [2020-09-25 11:25:28,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-25 11:25:28,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:25:28,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-25 11:25:28,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 11:25:28,787 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-09-25 11:25:28,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:25:28,818 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2020-09-25 11:25:28,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-25 11:25:28,820 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-09-25 11:25:28,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:25:28,831 INFO L225 Difference]: With dead ends: 41 [2020-09-25 11:25:28,831 INFO L226 Difference]: Without dead ends: 21 [2020-09-25 11:25:28,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 11:25:28,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-09-25 11:25:28,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-09-25 11:25:28,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-09-25 11:25:28,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-09-25 11:25:28,889 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 16 [2020-09-25 11:25:28,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:25:28,889 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-09-25 11:25:28,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-25 11:25:28,890 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-09-25 11:25:28,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 11:25:28,891 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:25:28,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:25:28,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:25:28,892 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:25:28,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:25:28,893 INFO L82 PathProgramCache]: Analyzing trace with hash 2097121065, now seen corresponding path program 1 times [2020-09-25 11:25:28,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:25:28,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680773310] [2020-09-25 11:25:28,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:25:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:28,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:28,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:28,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:25:28,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:28,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 11:25:28,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:28,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:28,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:25:28,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:25:28,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:25:28,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:28,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:25:28,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:28,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:28,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:28,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:25:28,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:28,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:25:28,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:28,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:28,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:25:28,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:28,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:25:28,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:28,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:25:28,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680773310] [2020-09-25 11:25:28,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:25:28,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:25:28,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038592254] [2020-09-25 11:25:28,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:25:28,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:25:28,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:25:28,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:25:28,999 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 3 states. [2020-09-25 11:25:29,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:25:29,024 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-09-25 11:25:29,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:25:29,026 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-09-25 11:25:29,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:25:29,027 INFO L225 Difference]: With dead ends: 28 [2020-09-25 11:25:29,027 INFO L226 Difference]: Without dead ends: 23 [2020-09-25 11:25:29,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:25:29,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-25 11:25:29,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-09-25 11:25:29,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-25 11:25:29,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-09-25 11:25:29,036 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 16 [2020-09-25 11:25:29,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:25:29,037 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-09-25 11:25:29,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:25:29,037 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-09-25 11:25:29,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-25 11:25:29,038 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:25:29,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:25:29,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:25:29,039 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:25:29,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:25:29,040 INFO L82 PathProgramCache]: Analyzing trace with hash -588245929, now seen corresponding path program 1 times [2020-09-25 11:25:29,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:25:29,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107605397] [2020-09-25 11:25:29,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:25:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:29,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:29,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:29,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:29,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 11:25:29,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:25:29,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 449 [2020-09-25 11:25:29,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:29,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:29,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:25:29,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:25:29,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:25:29,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:25:29,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:25:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:29,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:29,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:29,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:25:29,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:29,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:25:29,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:29,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:29,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:25:29,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:29,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:25:29,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:29,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:25:29,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107605397] [2020-09-25 11:25:29,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:25:29,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:25:29,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454346456] [2020-09-25 11:25:29,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:25:29,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:25:29,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:25:29,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:25:29,678 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 9 states. [2020-09-25 11:25:29,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:25:29,895 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2020-09-25 11:25:29,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:25:29,896 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-25 11:25:29,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:25:29,897 INFO L225 Difference]: With dead ends: 35 [2020-09-25 11:25:29,897 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 11:25:29,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:25:29,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 11:25:29,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2020-09-25 11:25:29,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-09-25 11:25:29,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-09-25 11:25:29,904 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 21 [2020-09-25 11:25:29,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:25:29,905 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-09-25 11:25:29,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:25:29,905 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-09-25 11:25:29,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-25 11:25:29,906 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:25:29,906 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:25:29,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:25:29,907 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:25:29,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:25:29,907 INFO L82 PathProgramCache]: Analyzing trace with hash -590441495, now seen corresponding path program 2 times [2020-09-25 11:25:29,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:25:29,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940537041] [2020-09-25 11:25:29,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:25:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:29,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:29,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:30,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:30,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:30,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 11:25:30,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:25:30,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-09-25 11:25:30,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:30,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:30,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:25:30,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:25:30,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:25:30,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:30,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:25:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:30,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:30,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:30,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:25:30,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:30,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:25:30,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:30,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:30,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:25:30,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:30,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:25:30,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:30,416 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:25:30,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940537041] [2020-09-25 11:25:30,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:25:30,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 11:25:30,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517350854] [2020-09-25 11:25:30,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 11:25:30,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:25:30,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 11:25:30,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:25:30,420 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 12 states. [2020-09-25 11:25:30,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:25:30,642 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2020-09-25 11:25:30,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:25:30,643 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2020-09-25 11:25:30,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:25:30,644 INFO L225 Difference]: With dead ends: 38 [2020-09-25 11:25:30,644 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 11:25:30,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-09-25 11:25:30,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 11:25:30,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-09-25 11:25:30,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-25 11:25:30,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-09-25 11:25:30,654 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 26 [2020-09-25 11:25:30,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:25:30,655 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-09-25 11:25:30,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 11:25:30,655 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-09-25 11:25:30,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 11:25:30,657 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:25:30,657 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:25:30,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:25:30,658 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:25:30,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:25:30,658 INFO L82 PathProgramCache]: Analyzing trace with hash -934609001, now seen corresponding path program 3 times [2020-09-25 11:25:30,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:25:30,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796898005] [2020-09-25 11:25:30,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:25:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:30,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:30,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:30,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:30,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:31,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:31,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 11:25:31,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:25:31,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 879 [2020-09-25 11:25:31,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:31,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:31,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 11:25:31,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:25:31,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:25:31,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:31,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:25:31,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:31,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:31,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:31,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:25:31,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:31,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:25:31,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:31,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:31,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:25:31,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:31,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:25:31,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:31,768 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:25:31,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796898005] [2020-09-25 11:25:31,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:25:31,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 11:25:31,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120948924] [2020-09-25 11:25:31,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 11:25:31,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:25:31,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 11:25:31,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:25:31,771 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 15 states. [2020-09-25 11:25:32,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:25:32,345 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-09-25 11:25:32,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 11:25:32,345 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 31 [2020-09-25 11:25:32,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:25:32,346 INFO L225 Difference]: With dead ends: 33 [2020-09-25 11:25:32,346 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 11:25:32,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=168, Invalid=702, Unknown=0, NotChecked=0, Total=870 [2020-09-25 11:25:32,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 11:25:32,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 11:25:32,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 11:25:32,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 11:25:32,349 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2020-09-25 11:25:32,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:25:32,349 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 11:25:32,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 11:25:32,350 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 11:25:32,350 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 11:25:32,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:25:32,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 11:25:32,526 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 11:25:32,526 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 11:25:32,526 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 11:25:32,527 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 11:25:32,527 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 11:25:32,527 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 11:25:32,527 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 11:25:32,527 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 11:25:32,528 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 11:25:32,528 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 11:25:32,528 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 11:25:32,528 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 24) no Hoare annotation was computed. [2020-09-25 11:25:32,528 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 11:25:32,529 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 11:25:32,529 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-25 11:25:32,529 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 11:25:32,529 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 24) no Hoare annotation was computed. [2020-09-25 11:25:32,530 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 24) the Hoare annotation is: true [2020-09-25 11:25:32,530 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 11:25:32,530 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 11:25:32,530 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-25 11:25:32,531 INFO L268 CegarLoopResult]: For program point L20-2(line 20) no Hoare annotation was computed. [2020-09-25 11:25:32,531 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 11:25:32,531 INFO L264 CegarLoopResult]: At program point L18-2(lines 18 21) the Hoare annotation is: (or (<= (+ main_~x~0 50) 0) (and (<= (+ main_~x~0 7) (* 3 main_~y~0)) (<= (+ main_~x~0 2) main_~y~0))) [2020-09-25 11:25:32,531 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-25 11:25:32,532 INFO L264 CegarLoopResult]: At program point L18-3(lines 18 21) the Hoare annotation is: (or (and (<= (+ main_~x~0 50) main_~y~0) (< 0 main_~y~0)) (and (<= (+ main_~x~0 53) (* 2 main_~y~0)) (<= 27 main_~y~0)) (and (<= 3 main_~y~0) (<= (+ main_~x~0 2) main_~y~0))) [2020-09-25 11:25:32,532 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 11:25:32,532 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-25 11:25:32,532 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 11:25:32,533 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 11:25:32,533 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 11:25:32,533 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 11:25:32,533 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 11:25:32,533 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 11:25:32,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 11:25:32 BoogieIcfgContainer [2020-09-25 11:25:32,560 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 11:25:32,565 INFO L168 Benchmark]: Toolchain (without parser) took 4990.80 ms. Allocated memory was 140.0 MB in the beginning and 246.9 MB in the end (delta: 107.0 MB). Free memory was 102.7 MB in the beginning and 114.1 MB in the end (delta: -11.4 MB). Peak memory consumption was 95.5 MB. Max. memory is 7.1 GB. [2020-09-25 11:25:32,566 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-25 11:25:32,567 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.99 ms. Allocated memory is still 140.0 MB. Free memory was 102.0 MB in the beginning and 92.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-25 11:25:32,568 INFO L168 Benchmark]: Boogie Preprocessor took 110.99 ms. Allocated memory was 140.0 MB in the beginning and 200.3 MB in the end (delta: 60.3 MB). Free memory was 92.7 MB in the beginning and 180.3 MB in the end (delta: -87.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-25 11:25:32,569 INFO L168 Benchmark]: RCFGBuilder took 355.78 ms. Allocated memory is still 200.3 MB. Free memory was 180.3 MB in the beginning and 166.3 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-09-25 11:25:32,570 INFO L168 Benchmark]: TraceAbstraction took 4200.05 ms. Allocated memory was 200.3 MB in the beginning and 246.9 MB in the end (delta: 46.7 MB). Free memory was 165.7 MB in the beginning and 114.1 MB in the end (delta: 51.6 MB). Peak memory consumption was 98.3 MB. Max. memory is 7.1 GB. [2020-09-25 11:25:32,575 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 304.99 ms. Allocated memory is still 140.0 MB. Free memory was 102.0 MB in the beginning and 92.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.99 ms. Allocated memory was 140.0 MB in the beginning and 200.3 MB in the end (delta: 60.3 MB). Free memory was 92.7 MB in the beginning and 180.3 MB in the end (delta: -87.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 355.78 ms. Allocated memory is still 200.3 MB. Free memory was 180.3 MB in the beginning and 166.3 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4200.05 ms. Allocated memory was 200.3 MB in the beginning and 246.9 MB in the end (delta: 46.7 MB). Free memory was 165.7 MB in the beginning and 114.1 MB in the end (delta: 51.6 MB). Peak memory consumption was 98.3 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: 18]: Loop Invariant Derived loop invariant: x + 50 <= 0 || (x + 7 <= 3 * y && x + 2 <= y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.8s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 96 SDtfs, 40 SDslu, 287 SDs, 0 SdLazy, 379 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 17 NumberOfFragments, 54 HoareAnnotationTreeSize, 11 FomulaSimplifications, 9 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 42 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 8275 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 3/26 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...