/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=0.3 --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/jm2006_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:33:08,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:33:08,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:33:08,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:33:08,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:33:08,993 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:33:08,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:33:08,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:33:08,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:33:09,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:33:09,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:33:09,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:33:09,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:33:09,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:33:09,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:33:09,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:33:09,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:33:09,007 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:33:09,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:33:09,010 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:33:09,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:33:09,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:33:09,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:33:09,014 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:33:09,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:33:09,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:33:09,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:33:09,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:33:09,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:33:09,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:33:09,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:33:09,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:33:09,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:33:09,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:33:09,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:33:09,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:33:09,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:33:09,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:33:09,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:33:09,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:33:09,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:33:09,029 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 12:33:09,057 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:33:09,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:33:09,059 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:33:09,059 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:33:09,060 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:33:09,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:33:09,060 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:33:09,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:33:09,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:33:09,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:33:09,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:33:09,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:33:09,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:33:09,062 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:33:09,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:33:09,062 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:33:09,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:33:09,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:33:09,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:33:09,063 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:33:09,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:33:09,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:33:09,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:33:09,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:33:09,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:33:09,064 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:33:09,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:33:09,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:33:09,065 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:33:09,065 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:33:09,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:33:09,560 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:33:09,565 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:33:09,567 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:33:09,568 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:33:09,569 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006_variant.i [2020-09-25 12:33:09,675 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9a763c94/a1c935ef334643e5906b332b9633e112/FLAGde6a4dd9a [2020-09-25 12:33:10,239 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:33:10,240 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/jm2006_variant.i [2020-09-25 12:33:10,249 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9a763c94/a1c935ef334643e5906b332b9633e112/FLAGde6a4dd9a [2020-09-25 12:33:10,595 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9a763c94/a1c935ef334643e5906b332b9633e112 [2020-09-25 12:33:10,609 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:33:10,615 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:33:10,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:33:10,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:33:10,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:33:10,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:33:10" (1/1) ... [2020-09-25 12:33:10,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e91369c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:33:10, skipping insertion in model container [2020-09-25 12:33:10,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:33:10" (1/1) ... [2020-09-25 12:33:10,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:33:10,665 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:33:10,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:33:10,878 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:33:10,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:33:10,918 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:33:10,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:33:10 WrapperNode [2020-09-25 12:33:10,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:33:10,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:33:10,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:33:10,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:33:10,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:33:10" (1/1) ... [2020-09-25 12:33:10,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:33:10" (1/1) ... [2020-09-25 12:33:10,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:33:10" (1/1) ... [2020-09-25 12:33:10,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:33:10" (1/1) ... [2020-09-25 12:33:10,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:33:10" (1/1) ... [2020-09-25 12:33:10,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:33:10" (1/1) ... [2020-09-25 12:33:10,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:33:10" (1/1) ... [2020-09-25 12:33:11,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:33:11,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:33:11,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:33:11,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:33:11,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:33:10" (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 12:33:11,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:33:11,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:33:11,121 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 12:33:11,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 12:33:11,121 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:33:11,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:33:11,121 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 12:33:11,122 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 12:33:11,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 12:33:11,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:33:11,122 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:33:11,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:33:11,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:33:11,396 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:33:11,396 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:33:11,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:33:11 BoogieIcfgContainer [2020-09-25 12:33:11,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:33:11,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:33:11,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:33:11,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:33:11,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:33:10" (1/3) ... [2020-09-25 12:33:11,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d29ae4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:33:11, skipping insertion in model container [2020-09-25 12:33:11,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:33:10" (2/3) ... [2020-09-25 12:33:11,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d29ae4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:33:11, skipping insertion in model container [2020-09-25 12:33:11,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:33:11" (3/3) ... [2020-09-25 12:33:11,427 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006_variant.i [2020-09-25 12:33:11,446 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:33:11,459 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:33:11,492 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:33:11,537 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:33:11,537 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:33:11,537 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:33:11,537 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:33:11,538 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:33:11,538 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:33:11,538 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:33:11,538 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:33:11,560 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-09-25 12:33:11,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 12:33:11,567 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:33:11,568 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, 1, 1] [2020-09-25 12:33:11,569 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:33:11,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:33:11,575 INFO L82 PathProgramCache]: Analyzing trace with hash 394160949, now seen corresponding path program 1 times [2020-09-25 12:33:11,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:33:11,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187472564] [2020-09-25 12:33:11,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:33:11,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:33:11,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:33:11,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:33:11,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:33:11,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:33:11,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 12:33:11,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:33:11,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:33:11,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:33:11,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 12:33:11,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:33:11,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:33:11,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:33:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:33:11,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:33:11,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:33:11,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:33:11,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:33:11,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:33:11,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:33:11,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:33:11,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:33:11,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:33:11,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:33:11,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:33:11,845 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 12:33:11,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187472564] [2020-09-25 12:33:11,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:33:11,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-25 12:33:11,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750517811] [2020-09-25 12:33:11,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-25 12:33:11,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:33:11,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-25 12:33:11,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 12:33:11,875 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2020-09-25 12:33:11,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:33:11,902 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2020-09-25 12:33:11,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-25 12:33:11,903 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2020-09-25 12:33:11,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:33:11,912 INFO L225 Difference]: With dead ends: 53 [2020-09-25 12:33:11,913 INFO L226 Difference]: Without dead ends: 31 [2020-09-25 12:33:11,917 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 12:33:11,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-25 12:33:11,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-25 12:33:11,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 12:33:11,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-09-25 12:33:11,967 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 23 [2020-09-25 12:33:11,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:33:11,968 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-09-25 12:33:11,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-25 12:33:11,968 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-09-25 12:33:11,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 12:33:11,969 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:33:11,969 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, 1, 1] [2020-09-25 12:33:11,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:33:11,970 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:33:11,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:33:11,971 INFO L82 PathProgramCache]: Analyzing trace with hash 79240288, now seen corresponding path program 1 times [2020-09-25 12:33:11,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:33:11,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212849825] [2020-09-25 12:33:11,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:33:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:33:12,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:33:12,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:33:12,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:33:12,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:33:12,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-25 12:33:12,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:33:12,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:33:12,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:33:12,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 12:33:12,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:33:12,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:33:12,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:33:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:33:12,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:33:12,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:33:12,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:33:12,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:33:12,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:33:12,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:33:12,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:33:12,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:33:12,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:33:12,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:33:12,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:33:12,595 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 12:33:12,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212849825] [2020-09-25 12:33:12,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:33:12,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 12:33:12,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239809493] [2020-09-25 12:33:12,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:33:12,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:33:12,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:33:12,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:33:12,600 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 9 states. [2020-09-25 12:33:12,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:33:12,809 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2020-09-25 12:33:12,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 12:33:12,809 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-09-25 12:33:12,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:33:12,811 INFO L225 Difference]: With dead ends: 40 [2020-09-25 12:33:12,811 INFO L226 Difference]: Without dead ends: 34 [2020-09-25 12:33:12,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:33:12,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-25 12:33:12,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-09-25 12:33:12,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-25 12:33:12,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-09-25 12:33:12,820 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 23 [2020-09-25 12:33:12,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:33:12,821 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-09-25 12:33:12,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:33:12,821 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-09-25 12:33:12,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 12:33:12,822 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:33:12,822 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:33:12,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:33:12,823 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:33:12,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:33:12,823 INFO L82 PathProgramCache]: Analyzing trace with hash 821188708, now seen corresponding path program 1 times [2020-09-25 12:33:12,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:33:12,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185683186] [2020-09-25 12:33:12,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:33:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:33:12,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:33:13,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:33:13,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 12:33:13,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:33:13,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-09-25 12:33:13,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:33:13,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:33:13,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:33:13,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 12:33:13,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:33:13,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:33:13,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:33:13,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:33:13,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:33:13,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:33:13,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:33:13,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:33:13,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:33:13,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:33:13,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:33:13,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:33:13,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:33:13,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:33:13,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:33:13,494 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 12:33:13,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185683186] [2020-09-25 12:33:13,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:33:13,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 12:33:13,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191173769] [2020-09-25 12:33:13,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 12:33:13,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:33:13,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 12:33:13,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:33:13,497 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 14 states. [2020-09-25 12:33:13,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:33:13,857 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2020-09-25 12:33:13,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 12:33:13,858 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2020-09-25 12:33:13,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:33:13,859 INFO L225 Difference]: With dead ends: 48 [2020-09-25 12:33:13,860 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 12:33:13,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2020-09-25 12:33:13,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 12:33:13,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-09-25 12:33:13,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 12:33:13,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2020-09-25 12:33:13,868 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 31 [2020-09-25 12:33:13,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:33:13,869 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2020-09-25 12:33:13,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 12:33:13,869 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2020-09-25 12:33:13,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 12:33:13,870 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:33:13,871 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:33:13,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:33:13,871 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:33:13,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:33:13,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1866551400, now seen corresponding path program 2 times [2020-09-25 12:33:13,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:33:13,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987977700] [2020-09-25 12:33:13,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:33:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:33:13,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:33:14,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:33:14,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 12:33:14,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:33:14,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-09-25 12:33:14,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:33:14,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:33:14,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 12:33:14,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 12:33:14,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 12:33:14,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:33:14,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:33:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:33:14,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:33:14,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:33:14,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:33:14,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:33:14,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:33:14,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:33:14,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:33:14,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:33:14,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:33:14,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:33:14,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:33:14,846 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:33:14,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987977700] [2020-09-25 12:33:14,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:33:14,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 12:33:14,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077491646] [2020-09-25 12:33:14,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 12:33:14,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:33:14,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 12:33:14,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2020-09-25 12:33:14,853 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 19 states. [2020-09-25 12:33:15,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:33:15,722 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-09-25 12:33:15,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-25 12:33:15,727 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 39 [2020-09-25 12:33:15,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:33:15,728 INFO L225 Difference]: With dead ends: 54 [2020-09-25 12:33:15,729 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 12:33:15,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=161, Invalid=895, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 12:33:15,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 12:33:15,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-25 12:33:15,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 12:33:15,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2020-09-25 12:33:15,737 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 39 [2020-09-25 12:33:15,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:33:15,737 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2020-09-25 12:33:15,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 12:33:15,737 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2020-09-25 12:33:15,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 12:33:15,739 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:33:15,739 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:33:15,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:33:15,739 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:33:15,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:33:15,740 INFO L82 PathProgramCache]: Analyzing trace with hash 472515692, now seen corresponding path program 3 times [2020-09-25 12:33:15,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:33:15,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990630450] [2020-09-25 12:33:15,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:33:15,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:33:15,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:33:16,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:33:16,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 12:33:16,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:33:16,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 442 [2020-09-25 12:33:16,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:33:16,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:33:16,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 12:33:16,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 12:33:16,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:33:16,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:33:16,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:33:16,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:33:16,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:33:16,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:33:16,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:33:16,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:33:16,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:33:16,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:33:16,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:33:16,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:33:16,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:33:16,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:33:16,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:33:16,536 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 12:33:16,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990630450] [2020-09-25 12:33:16,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:33:16,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 12:33:16,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699521925] [2020-09-25 12:33:16,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 12:33:16,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:33:16,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 12:33:16,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-09-25 12:33:16,539 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 16 states. [2020-09-25 12:33:16,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:33:16,920 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2020-09-25 12:33:16,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 12:33:16,920 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 47 [2020-09-25 12:33:16,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:33:16,921 INFO L225 Difference]: With dead ends: 48 [2020-09-25 12:33:16,922 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 12:33:16,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2020-09-25 12:33:16,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 12:33:16,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 12:33:16,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 12:33:16,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 12:33:16,924 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2020-09-25 12:33:16,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:33:16,925 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 12:33:16,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 12:33:16,925 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 12:33:16,925 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 12:33:16,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:33:16,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 12:33:17,034 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 12:33:17,035 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 12:33:17,035 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 12:33:17,035 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 12:33:17,035 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 12:33:17,036 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 12:33:17,036 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 12:33:17,036 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 12:33:17,036 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 12:33:17,036 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 12:33:17,036 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 12:33:17,036 INFO L268 CegarLoopResult]: For program point L27(lines 27 29) no Hoare annotation was computed. [2020-09-25 12:33:17,037 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 12:33:17,037 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 31) no Hoare annotation was computed. [2020-09-25 12:33:17,037 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-09-25 12:33:17,037 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-25 12:33:17,037 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-09-25 12:33:17,037 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-25 12:33:17,037 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 12:33:17,038 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-25 12:33:17,038 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 12:33:17,038 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 12:33:17,038 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-25 12:33:17,038 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 12:33:17,038 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 12:33:17,039 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-25 12:33:17,039 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 31) no Hoare annotation was computed. [2020-09-25 12:33:17,039 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 31) the Hoare annotation is: true [2020-09-25 12:33:17,039 INFO L264 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (let ((.cse0 (+ main_~y~0 main_~z~0))) (and (<= .cse0 0) (<= 0 .cse0))) [2020-09-25 12:33:17,039 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 12:33:17,040 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 12:33:17,040 INFO L264 CegarLoopResult]: At program point L22-2(lines 22 26) the Hoare annotation is: (or (let ((.cse0 (+ main_~y~0 main_~z~0))) (and (<= .cse0 main_~x~0) (<= main_~x~0 .cse0))) (not (= main_~i~0 main_~j~0))) [2020-09-25 12:33:17,040 INFO L268 CegarLoopResult]: For program point L22-3(lines 13 31) no Hoare annotation was computed. [2020-09-25 12:33:17,042 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 12:33:17,043 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-25 12:33:17,045 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 12:33:17,045 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-25 12:33:17,045 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 12:33:17,045 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-25 12:33:17,046 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 12:33:17,047 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 12:33:17,047 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 12:33:17,047 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 12:33:17,047 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 12:33:17,047 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 12:33:17,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:33:17 BoogieIcfgContainer [2020-09-25 12:33:17,073 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 12:33:17,078 INFO L168 Benchmark]: Toolchain (without parser) took 6464.64 ms. Allocated memory was 140.0 MB in the beginning and 281.5 MB in the end (delta: 141.6 MB). Free memory was 103.2 MB in the beginning and 152.3 MB in the end (delta: -49.1 MB). Peak memory consumption was 92.5 MB. Max. memory is 7.1 GB. [2020-09-25 12:33:17,080 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-25 12:33:17,083 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.99 ms. Allocated memory is still 140.0 MB. Free memory was 102.6 MB in the beginning and 93.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-25 12:33:17,089 INFO L168 Benchmark]: Boogie Preprocessor took 112.36 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 93.1 MB in the beginning and 182.3 MB in the end (delta: -89.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-09-25 12:33:17,090 INFO L168 Benchmark]: RCFGBuilder took 375.30 ms. Allocated memory is still 202.4 MB. Free memory was 182.3 MB in the beginning and 166.8 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. [2020-09-25 12:33:17,091 INFO L168 Benchmark]: TraceAbstraction took 5663.22 ms. Allocated memory was 202.4 MB in the beginning and 281.5 MB in the end (delta: 79.2 MB). Free memory was 166.8 MB in the beginning and 152.3 MB in the end (delta: 14.5 MB). Peak memory consumption was 93.7 MB. Max. memory is 7.1 GB. [2020-09-25 12:33:17,104 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 302.99 ms. Allocated memory is still 140.0 MB. Free memory was 102.6 MB in the beginning and 93.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.36 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 93.1 MB in the beginning and 182.3 MB in the end (delta: -89.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 375.30 ms. Allocated memory is still 202.4 MB. Free memory was 182.3 MB in the beginning and 166.8 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5663.22 ms. Allocated memory was 202.4 MB in the beginning and 281.5 MB in the end (delta: 79.2 MB). Free memory was 166.8 MB in the beginning and 152.3 MB in the end (delta: 14.5 MB). Peak memory consumption was 93.7 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: 22]: Loop Invariant Derived loop invariant: (y + z <= x && x <= y + z) || !(i == j) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.3s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 133 SDtfs, 77 SDslu, 536 SDs, 0 SdLazy, 569 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred 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, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 17 NumberOfFragments, 32 HoareAnnotationTreeSize, 11 FomulaSimplifications, 127 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 38 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 163 NumberOfCodeBlocks, 163 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 158 ConstructedInterpolants, 0 QuantifiedInterpolants, 47830 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 16/38 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...