/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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/brs2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:28:18,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:28:18,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:28:18,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:28:18,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:28:18,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:28:18,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:28:18,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:28:18,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:28:18,371 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:28:18,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:28:18,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:28:18,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:28:18,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:28:18,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:28:18,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:28:18,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:28:18,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:28:18,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:28:18,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:28:18,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:28:18,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:28:18,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:28:18,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:28:18,412 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:28:18,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:28:18,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:28:18,416 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:28:18,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:28:18,419 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:28:18,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:28:18,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:28:18,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:28:18,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:28:18,424 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:28:18,424 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:28:18,425 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:28:18,425 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:28:18,425 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:28:18,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:28:18,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:28:18,429 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 [2020-09-24 18:28:18,481 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:28:18,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:28:18,483 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:28:18,484 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:28:18,484 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:28:18,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:28:18,485 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:28:18,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:28:18,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:28:18,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:28:18,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:28:18,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:28:18,488 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:28:18,488 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:28:18,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:28:18,489 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:28:18,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:28:18,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:28:18,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:28:18,490 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:28:18,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:28:18,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:28:18,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:28:18,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:28:18,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:28:18,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:28:18,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:28:18,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:28:18,492 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:28:18,492 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:28:19,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:28:19,142 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:28:19,149 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:28:19,152 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:28:19,153 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:28:19,154 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs2f.c [2020-09-24 18:28:19,235 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a39b0140f/d40ec61069b54774a0d1de231e9a2692/FLAG17c09de1f [2020-09-24 18:28:19,774 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:28:19,774 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs2f.c [2020-09-24 18:28:19,785 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a39b0140f/d40ec61069b54774a0d1de231e9a2692/FLAG17c09de1f [2020-09-24 18:28:20,114 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a39b0140f/d40ec61069b54774a0d1de231e9a2692 [2020-09-24 18:28:20,126 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:28:20,132 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:28:20,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:28:20,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:28:20,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:28:20,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:28:20" (1/1) ... [2020-09-24 18:28:20,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44406637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:20, skipping insertion in model container [2020-09-24 18:28:20,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:28:20" (1/1) ... [2020-09-24 18:28:20,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:28:20,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:28:20,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:28:20,507 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:28:20,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:28:20,576 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:28:20,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:20 WrapperNode [2020-09-24 18:28:20,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:28:20,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:28:20,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:28:20,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:28:20,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:20" (1/1) ... [2020-09-24 18:28:20,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:20" (1/1) ... [2020-09-24 18:28:20,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:20" (1/1) ... [2020-09-24 18:28:20,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:20" (1/1) ... [2020-09-24 18:28:20,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:20" (1/1) ... [2020-09-24 18:28:20,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:20" (1/1) ... [2020-09-24 18:28:20,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:20" (1/1) ... [2020-09-24 18:28:20,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:28:20,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:28:20,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:28:20,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:28:20,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:20" (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 [2020-09-24 18:28:20,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:28:20,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:28:20,801 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 18:28:20,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 18:28:20,802 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:28:20,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:28:20,802 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 18:28:20,802 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 18:28:20,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 18:28:20,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:28:20,803 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 18:28:20,803 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:28:20,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 18:28:20,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 18:28:20,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 18:28:20,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 18:28:20,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 18:28:20,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:28:20,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:28:21,153 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:28:21,153 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 18:28:21,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:28:21 BoogieIcfgContainer [2020-09-24 18:28:21,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:28:21,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:28:21,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:28:21,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:28:21,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:28:20" (1/3) ... [2020-09-24 18:28:21,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2f7143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:28:21, skipping insertion in model container [2020-09-24 18:28:21,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:20" (2/3) ... [2020-09-24 18:28:21,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2f7143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:28:21, skipping insertion in model container [2020-09-24 18:28:21,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:28:21" (3/3) ... [2020-09-24 18:28:21,178 INFO L109 eAbstractionObserver]: Analyzing ICFG brs2f.c [2020-09-24 18:28:21,187 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:28:21,196 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:28:21,217 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:28:21,249 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:28:21,249 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:28:21,250 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:28:21,250 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:28:21,250 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:28:21,250 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:28:21,250 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:28:21,250 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:28:21,273 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-09-24 18:28:21,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 18:28:21,281 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:28:21,282 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] [2020-09-24 18:28:21,283 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:28:21,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:28:21,289 INFO L82 PathProgramCache]: Analyzing trace with hash 221259408, now seen corresponding path program 1 times [2020-09-24 18:28:21,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:28:21,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656284617] [2020-09-24 18:28:21,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:28:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:21,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:21,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:21,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:21,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 18:28:21,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:28:21,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-09-24 18:28:21,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:21,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:21,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 18:28:21,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:21,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:28:21,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:28:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:21,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:21,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:21,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:28:21,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:21,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:28:21,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:21,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:21,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:21,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:21,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:21,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:28:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:21,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:22,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:22,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:28:22,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:22,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 18:28:22,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:22,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:22,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:22,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:22,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:22,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:28:22,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656284617] [2020-09-24 18:28:22,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:28:22,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 18:28:22,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706842235] [2020-09-24 18:28:22,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 18:28:22,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:28:22,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 18:28:22,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:28:22,059 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 3 states. [2020-09-24 18:28:22,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:28:22,254 INFO L93 Difference]: Finished difference Result 101 states and 116 transitions. [2020-09-24 18:28:22,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 18:28:22,256 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-09-24 18:28:22,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:28:22,270 INFO L225 Difference]: With dead ends: 101 [2020-09-24 18:28:22,271 INFO L226 Difference]: Without dead ends: 47 [2020-09-24 18:28:22,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:28:22,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-24 18:28:22,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-09-24 18:28:22,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-24 18:28:22,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2020-09-24 18:28:22,343 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 30 [2020-09-24 18:28:22,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:28:22,345 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2020-09-24 18:28:22,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 18:28:22,345 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2020-09-24 18:28:22,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 18:28:22,349 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:28:22,350 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] [2020-09-24 18:28:22,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:28:22,350 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:28:22,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:28:22,351 INFO L82 PathProgramCache]: Analyzing trace with hash -151091841, now seen corresponding path program 1 times [2020-09-24 18:28:22,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:28:22,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429658106] [2020-09-24 18:28:22,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:28:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:22,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:22,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:22,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:22,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 18:28:22,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:28:22,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 454 [2020-09-24 18:28:22,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:22,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:28:22,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 18:28:22,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:28:22,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:28:22,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:28:22,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:22,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:22,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:22,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:28:22,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:22,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:28:22,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:22,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:22,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:22,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:22,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:22,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:28:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:22,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:22,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:22,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:28:22,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:22,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:28:22,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:22,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:28:22,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:22,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:28:22,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:28:22,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:28:22,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429658106] [2020-09-24 18:28:22,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:28:22,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:28:22,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219572988] [2020-09-24 18:28:22,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:28:22,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:28:22,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:28:22,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:28:22,951 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 5 states. [2020-09-24 18:28:23,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:28:23,109 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2020-09-24 18:28:23,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:28:23,110 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-24 18:28:23,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:28:23,111 INFO L225 Difference]: With dead ends: 67 [2020-09-24 18:28:23,111 INFO L226 Difference]: Without dead ends: 49 [2020-09-24 18:28:23,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:28:23,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-24 18:28:23,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-09-24 18:28:23,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-24 18:28:23,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-09-24 18:28:23,123 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 30 [2020-09-24 18:28:23,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:28:23,123 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-09-24 18:28:23,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:28:23,124 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-09-24 18:28:23,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 18:28:23,125 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:28:23,126 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:28:23,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:28:23,126 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:28:23,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:28:23,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1707000309, now seen corresponding path program 1 times [2020-09-24 18:28:23,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:28:23,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854138797] [2020-09-24 18:28:23,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:28:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:23,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:23,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:23,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:23,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:25,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:25,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 18:28:25,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:28:25,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2062 [2020-09-24 18:28:25,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:25,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:28:25,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 18:28:25,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 18:28:25,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:28:25,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:28:25,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:25,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:25,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:25,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:28:25,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:25,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:28:25,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:25,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:25,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:25,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:25,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:28:25,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:28:25,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:25,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:25,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:25,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:28:25,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:25,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 18:28:25,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:25,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:28:25,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:25,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:28:25,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:28:25,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:28:25,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854138797] [2020-09-24 18:28:25,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:28:25,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 18:28:25,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510551511] [2020-09-24 18:28:25,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:28:25,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:28:25,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:28:25,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:28:25,423 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 8 states. [2020-09-24 18:28:25,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:28:25,700 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-09-24 18:28:25,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 18:28:25,701 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-09-24 18:28:25,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:28:25,702 INFO L225 Difference]: With dead ends: 64 [2020-09-24 18:28:25,702 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 18:28:25,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:28:25,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 18:28:25,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-09-24 18:28:25,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-24 18:28:25,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-09-24 18:28:25,712 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 42 [2020-09-24 18:28:25,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:28:25,712 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-09-24 18:28:25,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:28:25,713 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-09-24 18:28:25,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 18:28:25,714 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:28:25,714 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:28:25,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:28:25,715 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:28:25,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:28:25,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1495951507, now seen corresponding path program 1 times [2020-09-24 18:28:25,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:28:25,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839743158] [2020-09-24 18:28:25,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:28:25,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:25,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:25,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:25,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:26,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:26,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 18:28:26,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:28:26,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 850 [2020-09-24 18:28:26,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:26,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:28:26,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 18:28:26,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 18:28:26,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:28:26,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:28:26,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:26,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:26,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:26,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:28:26,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:26,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:28:26,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:26,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:26,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:26,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:26,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:26,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:28:26,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:26,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:26,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:26,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:28:26,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:26,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:28:26,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:26,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:26,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:26,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:26,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:26,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:28:26,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839743158] [2020-09-24 18:28:26,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:28:26,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:28:26,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447178919] [2020-09-24 18:28:26,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:28:26,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:28:26,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:28:26,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:28:26,650 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 4 states. [2020-09-24 18:28:26,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:28:26,769 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-09-24 18:28:26,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 18:28:26,770 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-24 18:28:26,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:28:26,771 INFO L225 Difference]: With dead ends: 87 [2020-09-24 18:28:26,771 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 18:28:26,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:28:26,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 18:28:26,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2020-09-24 18:28:26,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 18:28:26,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2020-09-24 18:28:26,780 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 46 [2020-09-24 18:28:26,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:28:26,781 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2020-09-24 18:28:26,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:28:26,781 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2020-09-24 18:28:26,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 18:28:26,782 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:28:26,783 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-09-24 18:28:26,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:28:26,783 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:28:26,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:28:26,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1747495296, now seen corresponding path program 1 times [2020-09-24 18:28:26,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:28:26,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129664215] [2020-09-24 18:28:26,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:28:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:26,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:26,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:26,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:27,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:27,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:27,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:28,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:28,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:31,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:31,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 18:28:31,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:28:31,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4668 [2020-09-24 18:28:31,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:31,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:28:31,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 18:28:31,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:28:31,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:28:31,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:28:31,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:31,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:31,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:31,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:28:31,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:31,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:28:31,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:31,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:31,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:31,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:31,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:28:31,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:28:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:31,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:31,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:31,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:28:31,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:31,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:28:31,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:31,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:31,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:31,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:31,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:28:31,602 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:28:31,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129664215] [2020-09-24 18:28:31,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:28:31,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 18:28:31,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052210995] [2020-09-24 18:28:31,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 18:28:31,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:28:31,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 18:28:31,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-24 18:28:31,607 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 10 states. [2020-09-24 18:28:31,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:28:31,923 INFO L93 Difference]: Finished difference Result 93 states and 99 transitions. [2020-09-24 18:28:31,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 18:28:31,924 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-09-24 18:28:31,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:28:31,925 INFO L225 Difference]: With dead ends: 93 [2020-09-24 18:28:31,925 INFO L226 Difference]: Without dead ends: 64 [2020-09-24 18:28:31,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-09-24 18:28:31,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-24 18:28:31,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2020-09-24 18:28:31,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-24 18:28:31,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-09-24 18:28:31,934 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 52 [2020-09-24 18:28:31,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:28:31,934 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-09-24 18:28:31,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 18:28:31,935 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-09-24 18:28:31,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 18:28:31,936 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:28:31,936 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:28:31,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:28:31,936 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:28:31,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:28:31,937 INFO L82 PathProgramCache]: Analyzing trace with hash -557611095, now seen corresponding path program 1 times [2020-09-24 18:28:31,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:28:31,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869968449] [2020-09-24 18:28:31,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:28:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:31,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:32,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:32,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:32,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:32,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:33,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:33,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:34,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:34,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:34,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:36,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:36,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 18:28:36,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 18:28:36,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 18:28:36,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:36,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 18:28:36,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 18:28:36,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 18:28:36,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:37,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:28:37,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:37,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:37,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:37,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:28:37,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:37,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:28:37,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:37,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:37,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:37,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:37,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:37,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:28:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:37,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:37,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:37,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:28:37,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:37,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:28:37,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:37,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:28:37,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:37,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:28:37,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:37,501 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:28:37,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869968449] [2020-09-24 18:28:37,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:28:37,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 18:28:37,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874880174] [2020-09-24 18:28:37,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 18:28:37,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:28:37,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 18:28:37,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2020-09-24 18:28:37,508 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 18 states. [2020-09-24 18:28:38,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:28:38,967 INFO L93 Difference]: Finished difference Result 143 states and 157 transitions. [2020-09-24 18:28:38,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 18:28:38,967 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 58 [2020-09-24 18:28:38,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:28:38,969 INFO L225 Difference]: With dead ends: 143 [2020-09-24 18:28:38,969 INFO L226 Difference]: Without dead ends: 102 [2020-09-24 18:28:38,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=228, Invalid=1178, Unknown=0, NotChecked=0, Total=1406 [2020-09-24 18:28:38,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-24 18:28:38,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 86. [2020-09-24 18:28:38,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-24 18:28:38,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 93 transitions. [2020-09-24 18:28:38,986 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 93 transitions. Word has length 58 [2020-09-24 18:28:38,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:28:38,988 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 93 transitions. [2020-09-24 18:28:38,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 18:28:38,988 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 93 transitions. [2020-09-24 18:28:38,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-24 18:28:38,993 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:28:38,993 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:28:38,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:28:38,993 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:28:38,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:28:38,994 INFO L82 PathProgramCache]: Analyzing trace with hash -2138852750, now seen corresponding path program 2 times [2020-09-24 18:28:38,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:28:38,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679524274] [2020-09-24 18:28:38,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:28:39,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:39,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:39,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:39,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:39,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:39,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:40,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:40,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:41,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:41,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:42,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:44,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:44,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 18:28:44,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 18:28:44,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 18:28:44,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:44,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 18:28:44,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 18:28:44,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 18:28:44,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:44,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:28:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:44,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:44,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:44,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:28:44,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:44,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:28:44,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:44,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:44,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:44,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:44,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:28:44,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:28:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:44,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:44,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:44,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:28:44,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:44,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:28:44,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:44,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:44,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:44,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:44,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:28:44,238 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 18:28:44,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679524274] [2020-09-24 18:28:44,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:28:44,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 18:28:44,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37601580] [2020-09-24 18:28:44,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 18:28:44,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:28:44,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 18:28:44,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-09-24 18:28:44,241 INFO L87 Difference]: Start difference. First operand 86 states and 93 transitions. Second operand 13 states. [2020-09-24 18:28:46,976 WARN L193 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 34 DAG size of output: 27 [2020-09-24 18:28:47,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:28:47,268 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions. [2020-09-24 18:28:47,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 18:28:47,268 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 64 [2020-09-24 18:28:47,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:28:47,272 INFO L225 Difference]: With dead ends: 135 [2020-09-24 18:28:47,272 INFO L226 Difference]: Without dead ends: 129 [2020-09-24 18:28:47,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=173, Invalid=639, Unknown=0, NotChecked=0, Total=812 [2020-09-24 18:28:47,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-09-24 18:28:47,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 118. [2020-09-24 18:28:47,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-24 18:28:47,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 129 transitions. [2020-09-24 18:28:47,292 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 129 transitions. Word has length 64 [2020-09-24 18:28:47,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:28:47,295 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 129 transitions. [2020-09-24 18:28:47,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 18:28:47,296 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 129 transitions. [2020-09-24 18:28:47,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-24 18:28:47,297 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:28:47,297 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:28:47,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 18:28:47,297 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:28:47,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:28:47,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1245154100, now seen corresponding path program 3 times [2020-09-24 18:28:47,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:28:47,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114361221] [2020-09-24 18:28:47,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:28:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:47,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:47,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:47,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:48,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:48,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:48,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:48,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:49,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:49,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:49,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:52,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:52,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 18:28:52,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 18:28:52,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:28:52,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:52,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 18:28:52,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 18:28:52,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 18:28:52,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:28:52,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:28:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:52,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:52,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:52,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:28:52,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:52,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:28:52,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:52,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:52,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:52,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:52,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:28:52,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:28:52,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:52,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:52,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:52,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:28:52,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:52,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:28:52,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:52,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:52,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:52,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:52,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:28:52,506 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:28:52,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114361221] [2020-09-24 18:28:52,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:28:52,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 18:28:52,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973478430] [2020-09-24 18:28:52,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 18:28:52,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:28:52,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 18:28:52,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-09-24 18:28:52,509 INFO L87 Difference]: Start difference. First operand 118 states and 129 transitions. Second operand 14 states. [2020-09-24 18:28:53,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:28:53,123 INFO L93 Difference]: Finished difference Result 162 states and 175 transitions. [2020-09-24 18:28:53,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 18:28:53,123 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 68 [2020-09-24 18:28:53,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:28:53,124 INFO L225 Difference]: With dead ends: 162 [2020-09-24 18:28:53,125 INFO L226 Difference]: Without dead ends: 102 [2020-09-24 18:28:53,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=168, Invalid=702, Unknown=0, NotChecked=0, Total=870 [2020-09-24 18:28:53,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-24 18:28:53,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 99. [2020-09-24 18:28:53,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-09-24 18:28:53,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 107 transitions. [2020-09-24 18:28:53,136 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 107 transitions. Word has length 68 [2020-09-24 18:28:53,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:28:53,137 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 107 transitions. [2020-09-24 18:28:53,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 18:28:53,137 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 107 transitions. [2020-09-24 18:28:53,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-24 18:28:53,138 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:28:53,138 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:28:53,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 18:28:53,138 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:28:53,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:28:53,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1864607259, now seen corresponding path program 4 times [2020-09-24 18:28:53,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:28:53,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371247730] [2020-09-24 18:28:53,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:28:53,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:53,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:53,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:53,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:53,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:54,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:54,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:54,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:55,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:56,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:58,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:58,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 18:28:58,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:28:58,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 18:28:58,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:58,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 18:28:58,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 18:28:58,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 18:28:58,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:28:58,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:28:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:58,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:58,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:58,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:28:58,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:58,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:28:58,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:58,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:58,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:58,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:58,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:28:58,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:28:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:58,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:58,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:58,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:28:58,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:58,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:28:58,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:58,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:58,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:58,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:58,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:28:58,354 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 18:28:58,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371247730] [2020-09-24 18:28:58,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:28:58,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 18:28:58,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556103100] [2020-09-24 18:28:58,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 18:28:58,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:28:58,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 18:28:58,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-09-24 18:28:58,356 INFO L87 Difference]: Start difference. First operand 99 states and 107 transitions. Second operand 14 states. [2020-09-24 18:28:59,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:28:59,108 INFO L93 Difference]: Finished difference Result 120 states and 129 transitions. [2020-09-24 18:28:59,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 18:28:59,109 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 70 [2020-09-24 18:28:59,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:28:59,111 INFO L225 Difference]: With dead ends: 120 [2020-09-24 18:28:59,111 INFO L226 Difference]: Without dead ends: 114 [2020-09-24 18:28:59,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2020-09-24 18:28:59,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-24 18:28:59,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 77. [2020-09-24 18:28:59,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-24 18:28:59,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2020-09-24 18:28:59,121 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 70 [2020-09-24 18:28:59,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:28:59,121 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2020-09-24 18:28:59,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 18:28:59,121 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2020-09-24 18:28:59,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-24 18:28:59,122 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:28:59,122 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:28:59,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 18:28:59,123 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:28:59,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:28:59,123 INFO L82 PathProgramCache]: Analyzing trace with hash 685477565, now seen corresponding path program 5 times [2020-09-24 18:28:59,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:28:59,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761060510] [2020-09-24 18:28:59,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:28:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 18:28:59,145 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 18:28:59,146 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 18:28:59,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 18:28:59,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:28:59 BoogieIcfgContainer [2020-09-24 18:28:59,175 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 18:28:59,177 INFO L168 Benchmark]: Toolchain (without parser) took 39049.10 ms. Allocated memory was 141.6 MB in the beginning and 428.3 MB in the end (delta: 286.8 MB). Free memory was 103.8 MB in the beginning and 101.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 289.0 MB. Max. memory is 7.1 GB. [2020-09-24 18:28:59,178 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 18:28:59,179 INFO L168 Benchmark]: CACSL2BoogieTranslator took 445.79 ms. Allocated memory is still 141.6 MB. Free memory was 103.2 MB in the beginning and 92.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-24 18:28:59,180 INFO L168 Benchmark]: Boogie Preprocessor took 145.75 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 92.8 MB in the beginning and 181.9 MB in the end (delta: -89.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-24 18:28:59,181 INFO L168 Benchmark]: RCFGBuilder took 437.19 ms. Allocated memory is still 204.5 MB. Free memory was 181.9 MB in the beginning and 163.4 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. [2020-09-24 18:28:59,182 INFO L168 Benchmark]: TraceAbstraction took 38010.98 ms. Allocated memory was 204.5 MB in the beginning and 428.3 MB in the end (delta: 223.9 MB). Free memory was 162.8 MB in the beginning and 101.6 MB in the end (delta: 61.1 MB). Peak memory consumption was 285.0 MB. Max. memory is 7.1 GB. [2020-09-24 18:28:59,185 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 445.79 ms. Allocated memory is still 141.6 MB. Free memory was 103.2 MB in the beginning and 92.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 145.75 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 92.8 MB in the beginning and 181.9 MB in the end (delta: -89.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 437.19 ms. Allocated memory is still 204.5 MB. Free memory was 181.9 MB in the beginning and 163.4 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 38010.98 ms. Allocated memory was 204.5 MB in the beginning and 428.3 MB in the end (delta: 223.9 MB). Free memory was 162.8 MB in the beginning and 101.6 MB in the end (delta: 61.1 MB). Peak memory consumption was 285.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] i=0 [L29] COND TRUE i