/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=0.1 --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 10:18:22,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:18:22,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:18:22,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:18:22,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:18:22,526 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:18:22,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:18:22,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:18:22,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:18:22,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:18:22,538 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:18:22,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:18:22,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:18:22,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:18:22,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:18:22,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:18:22,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:18:22,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:18:22,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:18:22,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:18:22,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:18:22,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:18:22,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:18:22,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:18:22,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:18:22,577 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:18:22,577 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:18:22,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:18:22,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:18:22,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:18:22,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:18:22,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:18:22,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:18:22,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:18:22,595 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:18:22,595 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:18:22,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:18:22,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:18:22,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:18:22,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:18:22,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:18:22,600 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 10:18:22,644 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:18:22,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:18:22,647 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:18:22,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:18:22,648 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:18:22,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:18:22,648 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:18:22,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:18:22,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:18:22,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:18:22,650 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:18:22,650 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:18:22,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:18:22,651 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:18:22,651 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:18:22,651 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:18:22,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:18:22,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:18:22,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:18:22,652 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:18:22,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:18:22,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:18:22,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:18:22,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:18:22,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:18:22,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:18:22,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:18:22,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:18:22,654 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:18:22,654 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:18:23,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:18:23,122 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:18:23,127 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:18:23,129 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:18:23,129 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:18:23,130 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006_variant.i [2020-09-25 10:18:23,210 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6cee1bc0/f11bbaeb73554fe9ac9aa304b7333fce/FLAGc0fa8ee25 [2020-09-25 10:18:23,680 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:18:23,681 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/jm2006_variant.i [2020-09-25 10:18:23,690 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6cee1bc0/f11bbaeb73554fe9ac9aa304b7333fce/FLAGc0fa8ee25 [2020-09-25 10:18:24,034 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6cee1bc0/f11bbaeb73554fe9ac9aa304b7333fce [2020-09-25 10:18:24,047 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:18:24,052 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:18:24,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:18:24,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:18:24,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:18:24,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:18:24" (1/1) ... [2020-09-25 10:18:24,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@756d08d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:24, skipping insertion in model container [2020-09-25 10:18:24,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:18:24" (1/1) ... [2020-09-25 10:18:24,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:18:24,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:18:24,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:18:24,388 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:18:24,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:18:24,421 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:18:24,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:24 WrapperNode [2020-09-25 10:18:24,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:18:24,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:18:24,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:18:24,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:18:24,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:24" (1/1) ... [2020-09-25 10:18:24,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:24" (1/1) ... [2020-09-25 10:18:24,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:24" (1/1) ... [2020-09-25 10:18:24,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:24" (1/1) ... [2020-09-25 10:18:24,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:24" (1/1) ... [2020-09-25 10:18:24,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:24" (1/1) ... [2020-09-25 10:18:24,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:24" (1/1) ... [2020-09-25 10:18:24,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:18:24,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:18:24,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:18:24,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:18:24,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:24" (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 10:18:24,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:18:24,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:18:24,617 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 10:18:24,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 10:18:24,617 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:18:24,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:18:24,618 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 10:18:24,618 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 10:18:24,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 10:18:24,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:18:24,619 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:18:24,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:18:24,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:18:24,876 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:18:24,876 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:18:24,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:18:24 BoogieIcfgContainer [2020-09-25 10:18:24,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:18:24,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:18:24,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:18:24,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:18:24,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:18:24" (1/3) ... [2020-09-25 10:18:24,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49189b18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:18:24, skipping insertion in model container [2020-09-25 10:18:24,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:24" (2/3) ... [2020-09-25 10:18:24,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49189b18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:18:24, skipping insertion in model container [2020-09-25 10:18:24,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:18:24" (3/3) ... [2020-09-25 10:18:24,893 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006_variant.i [2020-09-25 10:18:24,907 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:18:24,917 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:18:24,945 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:18:24,979 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:18:24,980 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:18:24,980 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:18:24,980 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:18:24,980 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:18:24,980 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:18:24,980 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:18:24,981 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:18:25,006 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-09-25 10:18:25,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 10:18:25,014 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:25,015 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 10:18:25,015 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:25,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:25,022 INFO L82 PathProgramCache]: Analyzing trace with hash 394160949, now seen corresponding path program 1 times [2020-09-25 10:18:25,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:25,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077327743] [2020-09-25 10:18:25,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:25,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:25,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:25,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:18:25,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:25,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 10:18:25,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:25,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:25,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:25,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 10:18:25,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:25,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:18:25,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:25,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:25,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:25,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:25,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:18:25,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:25,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:18:25,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:25,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:25,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:25,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:25,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:25,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:25,295 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 10:18:25,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077327743] [2020-09-25 10:18:25,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:18:25,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-25 10:18:25,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593254079] [2020-09-25 10:18:25,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-25 10:18:25,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:25,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-25 10:18:25,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 10:18:25,330 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2020-09-25 10:18:25,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:25,362 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2020-09-25 10:18:25,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-25 10:18:25,363 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2020-09-25 10:18:25,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:25,375 INFO L225 Difference]: With dead ends: 53 [2020-09-25 10:18:25,376 INFO L226 Difference]: Without dead ends: 31 [2020-09-25 10:18:25,381 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 10:18:25,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-25 10:18:25,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-25 10:18:25,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 10:18:25,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-09-25 10:18:25,430 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 23 [2020-09-25 10:18:25,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:25,431 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-09-25 10:18:25,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-25 10:18:25,431 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-09-25 10:18:25,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 10:18:25,432 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:25,433 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 10:18:25,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:18:25,434 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:25,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:25,434 INFO L82 PathProgramCache]: Analyzing trace with hash 79240288, now seen corresponding path program 1 times [2020-09-25 10:18:25,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:25,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699198757] [2020-09-25 10:18:25,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:25,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:25,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:25,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:18:25,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:25,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 10:18:25,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:25,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:25,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:18:25,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:18:25,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 10:18:25,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:26,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:26,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:26,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:26,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:18:26,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:26,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:18:26,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:26,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:26,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:26,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:26,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:26,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:26,078 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 10:18:26,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699198757] [2020-09-25 10:18:26,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:18:26,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 10:18:26,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195822146] [2020-09-25 10:18:26,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:18:26,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:26,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:18:26,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:18:26,087 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 9 states. [2020-09-25 10:18:26,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:26,340 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2020-09-25 10:18:26,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 10:18:26,340 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-09-25 10:18:26,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:26,342 INFO L225 Difference]: With dead ends: 40 [2020-09-25 10:18:26,342 INFO L226 Difference]: Without dead ends: 34 [2020-09-25 10:18:26,344 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 10:18:26,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-25 10:18:26,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-09-25 10:18:26,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-25 10:18:26,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-09-25 10:18:26,351 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 23 [2020-09-25 10:18:26,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:26,352 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-09-25 10:18:26,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:18:26,352 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-09-25 10:18:26,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 10:18:26,353 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:26,354 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 10:18:26,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:18:26,354 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:26,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:26,355 INFO L82 PathProgramCache]: Analyzing trace with hash 821188708, now seen corresponding path program 1 times [2020-09-25 10:18:26,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:26,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795419450] [2020-09-25 10:18:26,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:26,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:26,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:26,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 10:18:26,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:26,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-09-25 10:18:26,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:26,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:26,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:18:26,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:18:26,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:18:26,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:27,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:27,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:27,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:27,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:18:27,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:27,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:18:27,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:27,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:27,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:27,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:27,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:27,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:27,106 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 10:18:27,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795419450] [2020-09-25 10:18:27,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:27,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 10:18:27,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365680563] [2020-09-25 10:18:27,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 10:18:27,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:27,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 10:18:27,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:18:27,110 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 14 states. [2020-09-25 10:18:27,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:27,464 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2020-09-25 10:18:27,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 10:18:27,465 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2020-09-25 10:18:27,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:27,467 INFO L225 Difference]: With dead ends: 48 [2020-09-25 10:18:27,467 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 10:18:27,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2020-09-25 10:18:27,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 10:18:27,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-09-25 10:18:27,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 10:18:27,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2020-09-25 10:18:27,475 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 31 [2020-09-25 10:18:27,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:27,476 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2020-09-25 10:18:27,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 10:18:27,476 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2020-09-25 10:18:27,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 10:18:27,478 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:27,478 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 10:18:27,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:18:27,478 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:27,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:27,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1866551400, now seen corresponding path program 2 times [2020-09-25 10:18:27,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:27,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119686188] [2020-09-25 10:18:27,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:27,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:27,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:27,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 10:18:27,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:27,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 413 [2020-09-25 10:18:27,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:27,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:27,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 10:18:27,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:18:27,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:18:27,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:28,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:28,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:28,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:28,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:28,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:18:28,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:28,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:18:28,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:28,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:28,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:28,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:28,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:28,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:28,356 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 10:18:28,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119686188] [2020-09-25 10:18:28,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:28,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 10:18:28,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463805031] [2020-09-25 10:18:28,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 10:18:28,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:28,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 10:18:28,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:18:28,359 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 19 states. [2020-09-25 10:18:29,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:29,156 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-09-25 10:18:29,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-25 10:18:29,156 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 39 [2020-09-25 10:18:29,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:29,158 INFO L225 Difference]: With dead ends: 54 [2020-09-25 10:18:29,158 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 10:18:29,164 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 10:18:29,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 10:18:29,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-25 10:18:29,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 10:18:29,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2020-09-25 10:18:29,176 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 39 [2020-09-25 10:18:29,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:29,177 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2020-09-25 10:18:29,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 10:18:29,177 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2020-09-25 10:18:29,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 10:18:29,179 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:29,179 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 10:18:29,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:18:29,179 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:29,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:29,181 INFO L82 PathProgramCache]: Analyzing trace with hash 472515692, now seen corresponding path program 3 times [2020-09-25 10:18:29,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:29,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533585410] [2020-09-25 10:18:29,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:29,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:29,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:29,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 10:18:29,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:29,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 489 [2020-09-25 10:18:29,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:29,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:29,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 10:18:29,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:18:29,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 10:18:29,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:30,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:30,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:30,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:30,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:18:30,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:30,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:18:30,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:30,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:30,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:30,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:30,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:30,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:30,045 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 10:18:30,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533585410] [2020-09-25 10:18:30,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:30,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 10:18:30,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951004198] [2020-09-25 10:18:30,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 10:18:30,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:30,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 10:18:30,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:18:30,048 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 16 states. [2020-09-25 10:18:30,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:30,466 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2020-09-25 10:18:30,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 10:18:30,466 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 47 [2020-09-25 10:18:30,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:30,467 INFO L225 Difference]: With dead ends: 48 [2020-09-25 10:18:30,467 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 10:18:30,468 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 10:18:30,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 10:18:30,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 10:18:30,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 10:18:30,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 10:18:30,469 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2020-09-25 10:18:30,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:30,469 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 10:18:30,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 10:18:30,469 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 10:18:30,470 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 10:18:30,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:18:30,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 10:18:30,578 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 10:18:30,578 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 10:18:30,578 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 10:18:30,578 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 10:18:30,578 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 10:18:30,578 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 10:18:30,579 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 10:18:30,579 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 10:18:30,579 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 10:18:30,579 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 10:18:30,579 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 10:18:30,579 INFO L268 CegarLoopResult]: For program point L27(lines 27 29) no Hoare annotation was computed. [2020-09-25 10:18:30,579 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 10:18:30,579 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 31) no Hoare annotation was computed. [2020-09-25 10:18:30,580 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-09-25 10:18:30,580 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-25 10:18:30,580 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-09-25 10:18:30,580 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-25 10:18:30,580 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 10:18:30,580 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-25 10:18:30,580 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 10:18:30,580 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 10:18:30,581 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-25 10:18:30,581 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 10:18:30,581 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 10:18:30,581 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-25 10:18:30,581 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 31) no Hoare annotation was computed. [2020-09-25 10:18:30,582 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 31) the Hoare annotation is: true [2020-09-25 10:18:30,582 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 10:18:30,582 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 10:18:30,582 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 10:18:30,582 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 10:18:30,583 INFO L268 CegarLoopResult]: For program point L22-3(lines 13 31) no Hoare annotation was computed. [2020-09-25 10:18:30,584 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 10:18:30,585 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-25 10:18:30,585 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 10:18:30,585 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-25 10:18:30,585 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 10:18:30,585 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-25 10:18:30,585 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 10:18:30,586 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 10:18:30,587 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 10:18:30,587 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 10:18:30,587 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 10:18:30,587 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 10:18:30,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 10:18:30 BoogieIcfgContainer [2020-09-25 10:18:30,616 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 10:18:30,623 INFO L168 Benchmark]: Toolchain (without parser) took 6570.73 ms. Allocated memory was 137.9 MB in the beginning and 289.4 MB in the end (delta: 151.5 MB). Free memory was 100.0 MB in the beginning and 192.7 MB in the end (delta: -92.7 MB). Peak memory consumption was 58.8 MB. Max. memory is 7.1 GB. [2020-09-25 10:18:30,624 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 137.9 MB. Free memory was 118.2 MB in the beginning and 117.7 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-25 10:18:30,628 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.50 ms. Allocated memory is still 137.9 MB. Free memory was 99.2 MB in the beginning and 89.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-25 10:18:30,637 INFO L168 Benchmark]: Boogie Preprocessor took 108.34 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 89.8 MB in the beginning and 180.4 MB in the end (delta: -90.7 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-09-25 10:18:30,638 INFO L168 Benchmark]: RCFGBuilder took 351.03 ms. Allocated memory is still 200.8 MB. Free memory was 180.4 MB in the beginning and 165.5 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2020-09-25 10:18:30,639 INFO L168 Benchmark]: TraceAbstraction took 5732.16 ms. Allocated memory was 200.8 MB in the beginning and 289.4 MB in the end (delta: 88.6 MB). Free memory was 164.6 MB in the beginning and 192.7 MB in the end (delta: -28.2 MB). Peak memory consumption was 60.5 MB. Max. memory is 7.1 GB. [2020-09-25 10:18:30,654 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 137.9 MB. Free memory was 118.2 MB in the beginning and 117.7 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 369.50 ms. Allocated memory is still 137.9 MB. Free memory was 99.2 MB in the beginning and 89.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.34 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 89.8 MB in the beginning and 180.4 MB in the end (delta: -90.7 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 351.03 ms. Allocated memory is still 200.8 MB. Free memory was 180.4 MB in the beginning and 165.5 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5732.16 ms. Allocated memory was 200.8 MB in the beginning and 289.4 MB in the end (delta: 88.6 MB). Free memory was 164.6 MB in the beginning and 192.7 MB in the end (delta: -28.2 MB). Peak memory consumption was 60.5 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: 5.4s, 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...