/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-programs/partial_mod_count_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:06:34,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:06:34,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:06:34,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:06:34,324 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:06:34,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:06:34,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:06:34,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:06:34,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:06:34,353 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:06:34,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:06:34,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:06:34,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:06:34,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:06:34,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:06:34,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:06:34,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:06:34,381 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:06:34,383 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:06:34,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:06:34,393 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:06:34,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:06:34,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:06:34,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:06:34,407 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:06:34,408 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:06:34,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:06:34,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:06:34,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:06:34,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:06:34,414 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:06:34,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:06:34,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:06:34,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:06:34,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:06:34,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:06:34,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:06:34,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:06:34,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:06:34,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:06:34,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:06:34,424 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 04:06:34,475 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:06:34,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:06:34,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:06:34,481 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:06:34,481 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:06:34,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:06:34,482 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:06:34,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:06:34,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:06:34,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:06:34,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:06:34,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:06:34,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:06:34,485 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:06:34,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:06:34,485 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:06:34,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:06:34,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:06:34,486 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:06:34,486 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:06:34,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:06:34,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:06:34,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:06:34,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:06:34,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:06:34,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:06:34,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:06:34,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:06:34,488 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:06:34,488 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:06:34,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:06:34,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:06:34,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:06:34,929 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:06:34,930 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:06:34,931 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-programs/partial_mod_count_1.c [2020-10-29 04:06:35,017 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b36d3024d/b1eae4122d1647ffa6655e23c8dd0f43/FLAGc475815de [2020-10-29 04:06:35,748 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:06:35,749 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-programs/partial_mod_count_1.c [2020-10-29 04:06:35,757 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b36d3024d/b1eae4122d1647ffa6655e23c8dd0f43/FLAGc475815de [2020-10-29 04:06:36,120 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b36d3024d/b1eae4122d1647ffa6655e23c8dd0f43 [2020-10-29 04:06:36,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:06:36,138 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:06:36,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:06:36,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:06:36,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:06:36,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:06:36" (1/1) ... [2020-10-29 04:06:36,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7afc6b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:06:36, skipping insertion in model container [2020-10-29 04:06:36,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:06:36" (1/1) ... [2020-10-29 04:06:36,166 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:06:36,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:06:36,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:06:36,413 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:06:36,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:06:36,447 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:06:36,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:06:36 WrapperNode [2020-10-29 04:06:36,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:06:36,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:06:36,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:06:36,449 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:06:36,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:06:36" (1/1) ... [2020-10-29 04:06:36,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:06:36" (1/1) ... [2020-10-29 04:06:36,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:06:36" (1/1) ... [2020-10-29 04:06:36,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:06:36" (1/1) ... [2020-10-29 04:06:36,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:06:36" (1/1) ... [2020-10-29 04:06:36,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:06:36" (1/1) ... [2020-10-29 04:06:36,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:06:36" (1/1) ... [2020-10-29 04:06:36,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:06:36,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:06:36,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:06:36,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:06:36,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:06:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:06:36,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:06:36,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:06:36,562 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:06:36,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 04:06:36,562 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:06:36,562 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:06:36,562 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:06:36,562 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:06:36,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:06:36,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 04:06:36,563 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:06:36,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:06:36,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:06:36,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:06:36,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:06:36,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:06:36,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:06:36,869 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:06:36,869 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-29 04:06:36,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:06:36 BoogieIcfgContainer [2020-10-29 04:06:36,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:06:36,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:06:36,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:06:36,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:06:36,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:06:36" (1/3) ... [2020-10-29 04:06:36,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5086608a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:06:36, skipping insertion in model container [2020-10-29 04:06:36,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:06:36" (2/3) ... [2020-10-29 04:06:36,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5086608a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:06:36, skipping insertion in model container [2020-10-29 04:06:36,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:06:36" (3/3) ... [2020-10-29 04:06:36,904 INFO L111 eAbstractionObserver]: Analyzing ICFG partial_mod_count_1.c [2020-10-29 04:06:36,939 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:06:36,950 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:06:36,968 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:06:37,001 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:06:37,001 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:06:37,001 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:06:37,002 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:06:37,002 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:06:37,002 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:06:37,002 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:06:37,002 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:06:37,044 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-29 04:06:37,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 04:06:37,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:06:37,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:06:37,053 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:06:37,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:06:37,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1115320526, now seen corresponding path program 1 times [2020-10-29 04:06:37,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:06:37,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288687761] [2020-10-29 04:06:37,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:06:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:37,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:37,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:37,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:37,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 04:06:37,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:06:37,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 712 [2020-10-29 04:06:37,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:37,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:37,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:06:37,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:06:37,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 04:06:37,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 04:06:38,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:06:38,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:38,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:38,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:38,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:06:38,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:38,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 04:06:38,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:38,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:38,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:06:38,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:38,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:06:38,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:06:38,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:06:38,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288687761] [2020-10-29 04:06:38,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:06:38,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 04:06:38,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526013866] [2020-10-29 04:06:38,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:06:38,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:06:38,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:06:38,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:06:38,395 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 8 states. [2020-10-29 04:06:38,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:06:38,823 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2020-10-29 04:06:38,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 04:06:38,825 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-10-29 04:06:38,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:06:38,835 INFO L225 Difference]: With dead ends: 64 [2020-10-29 04:06:38,836 INFO L226 Difference]: Without dead ends: 33 [2020-10-29 04:06:38,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:06:38,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-29 04:06:38,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-29 04:06:38,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-29 04:06:38,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-10-29 04:06:38,910 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 15 [2020-10-29 04:06:38,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:06:38,910 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-10-29 04:06:38,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:06:38,911 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-10-29 04:06:38,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 04:06:38,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:06:38,913 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:06:38,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:06:38,914 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:06:38,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:06:38,916 INFO L82 PathProgramCache]: Analyzing trace with hash -278712185, now seen corresponding path program 1 times [2020-10-29 04:06:38,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:06:38,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968520572] [2020-10-29 04:06:38,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:06:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:38,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:38,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:39,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:39,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:39,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:39,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:39,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 04:06:39,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:06:39,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-10-29 04:06:39,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:39,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:39,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 04:06:39,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:06:39,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 04:06:39,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:06:40,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:06:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:40,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:40,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:40,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:06:40,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:40,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 04:06:40,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:40,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:40,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:06:40,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:40,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:06:40,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:06:40,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 04:06:40,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:40,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:40,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:40,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:06:40,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:40,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:06:40,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:40,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:40,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:06:40,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:40,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:06:40,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:06:40,331 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:06:40,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968520572] [2020-10-29 04:06:40,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:06:40,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 04:06:40,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245805677] [2020-10-29 04:06:40,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:06:40,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:06:40,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:06:40,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:06:40,342 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 9 states. [2020-10-29 04:06:40,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:06:40,680 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2020-10-29 04:06:40,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:06:40,681 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-29 04:06:40,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:06:40,682 INFO L225 Difference]: With dead ends: 44 [2020-10-29 04:06:40,682 INFO L226 Difference]: Without dead ends: 41 [2020-10-29 04:06:40,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:06:40,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-29 04:06:40,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-29 04:06:40,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 04:06:40,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2020-10-29 04:06:40,694 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 23 [2020-10-29 04:06:40,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:06:40,695 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2020-10-29 04:06:40,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:06:40,695 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2020-10-29 04:06:40,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 04:06:40,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:06:40,697 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:06:40,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:06:40,697 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:06:40,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:06:40,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1340786969, now seen corresponding path program 2 times [2020-10-29 04:06:40,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:06:40,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792809199] [2020-10-29 04:06:40,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:06:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:40,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:40,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:40,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:40,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:40,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:41,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:41,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:44,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:44,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 04:06:44,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 04:06:44,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4195 [2020-10-29 04:06:44,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:44,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:44,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:06:44,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:06:44,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 04:06:44,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:06:45,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:06:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:45,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:45,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:45,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:06:45,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:45,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:06:45,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:45,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:45,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:06:45,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:45,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:06:45,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:45,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 04:06:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:45,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:45,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:45,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:06:45,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:45,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:06:45,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:45,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:45,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:06:45,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:45,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:06:45,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:06:45,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 04:06:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:45,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:45,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:45,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:06:45,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:45,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:06:45,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:45,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:45,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:06:45,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:45,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:06:45,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:06:45,310 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:06:45,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792809199] [2020-10-29 04:06:45,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:06:45,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 04:06:45,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338391387] [2020-10-29 04:06:45,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 04:06:45,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:06:45,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 04:06:45,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:06:45,316 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 10 states. [2020-10-29 04:06:45,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:06:45,775 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2020-10-29 04:06:45,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 04:06:45,777 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-10-29 04:06:45,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:06:45,778 INFO L225 Difference]: With dead ends: 52 [2020-10-29 04:06:45,778 INFO L226 Difference]: Without dead ends: 49 [2020-10-29 04:06:45,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:06:45,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-29 04:06:45,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-10-29 04:06:45,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-29 04:06:45,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2020-10-29 04:06:45,807 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 31 [2020-10-29 04:06:45,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:06:45,808 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2020-10-29 04:06:45,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 04:06:45,808 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2020-10-29 04:06:45,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 04:06:45,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:06:45,809 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:06:45,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:06:45,810 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:06:45,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:06:45,811 INFO L82 PathProgramCache]: Analyzing trace with hash -754262713, now seen corresponding path program 3 times [2020-10-29 04:06:45,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:06:45,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081785513] [2020-10-29 04:06:45,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:06:45,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:45,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:45,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:45,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:45,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:45,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:46,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:46,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:47,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:50,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:50,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 04:06:50,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 04:06:50,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 04:06:50,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:50,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:50,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:06:50,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:06:50,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 04:06:50,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:06:50,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:06:50,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:50,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:50,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:50,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:06:50,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:50,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:06:50,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:50,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:50,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:06:50,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:50,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:06:50,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:50,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 04:06:50,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:50,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:50,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:50,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:06:50,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:50,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:06:50,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:50,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:50,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:06:50,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:50,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:06:50,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:50,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 04:06:50,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:50,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:50,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:50,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:06:50,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:50,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:06:50,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:50,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:50,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:06:50,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:50,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:06:50,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:50,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 04:06:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:51,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:51,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:51,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:06:51,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:51,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:06:51,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:51,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:51,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:06:51,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:06:51,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:06:51,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:06:51,015 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 04:06:51,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081785513] [2020-10-29 04:06:51,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:06:51,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:06:51,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590357982] [2020-10-29 04:06:51,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:06:51,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:06:51,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:06:51,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:06:51,019 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand 8 states. [2020-10-29 04:06:51,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:06:51,241 INFO L93 Difference]: Finished difference Result 106 states and 128 transitions. [2020-10-29 04:06:51,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 04:06:51,245 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-10-29 04:06:51,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:06:51,246 INFO L225 Difference]: With dead ends: 106 [2020-10-29 04:06:51,247 INFO L226 Difference]: Without dead ends: 58 [2020-10-29 04:06:51,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:06:51,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-29 04:06:51,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2020-10-29 04:06:51,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-29 04:06:51,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2020-10-29 04:06:51,271 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 39 [2020-10-29 04:06:51,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:06:51,272 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2020-10-29 04:06:51,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:06:51,272 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2020-10-29 04:06:51,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 04:06:51,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:06:51,274 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:06:51,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:06:51,279 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:06:51,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:06:51,280 INFO L82 PathProgramCache]: Analyzing trace with hash -544069207, now seen corresponding path program 1 times [2020-10-29 04:06:51,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:06:51,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063561521] [2020-10-29 04:06:51,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:06:51,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:51,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:51,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:51,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:51,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:51,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:52,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:52,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:52,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:52,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:52,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:54,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:54,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:56,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:56,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 04:06:56,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 04:06:56,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 04:06:56,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:56,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:56,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 04:06:56,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:06:56,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 04:06:56,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:56,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:06:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:56,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:56,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:56,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:06:56,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:56,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:06:56,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:56,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:56,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:06:56,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:56,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:06:56,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:56,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 04:06:56,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:56,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:56,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:56,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:06:56,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:56,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:06:56,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:56,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:56,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:06:56,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:56,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:06:56,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:06:56,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 04:06:56,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:56,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:56,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:56,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:06:56,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:56,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:06:56,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:56,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:56,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:06:56,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:56,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:06:56,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:56,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:06:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:56,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:56,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:56,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:06:56,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:56,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:06:56,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:56,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:56,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:06:56,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:06:56,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:06:56,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:56,482 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 04:06:56,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063561521] [2020-10-29 04:06:56,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:06:56,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 04:06:56,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133137763] [2020-10-29 04:06:56,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:06:56,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:06:56,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:06:56,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:06:56,487 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand 9 states. [2020-10-29 04:06:56,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:06:56,798 INFO L93 Difference]: Finished difference Result 130 states and 159 transitions. [2020-10-29 04:06:56,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:06:56,799 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-10-29 04:06:56,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:06:56,800 INFO L225 Difference]: With dead ends: 130 [2020-10-29 04:06:56,800 INFO L226 Difference]: Without dead ends: 71 [2020-10-29 04:06:56,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:06:56,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-29 04:06:56,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 54. [2020-10-29 04:06:56,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-29 04:06:56,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2020-10-29 04:06:56,813 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 42 [2020-10-29 04:06:56,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:06:56,814 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2020-10-29 04:06:56,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:06:56,814 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2020-10-29 04:06:56,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 04:06:56,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:06:56,816 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:06:56,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:06:56,816 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:06:56,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:06:56,817 INFO L82 PathProgramCache]: Analyzing trace with hash -731649529, now seen corresponding path program 2 times [2020-10-29 04:06:56,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:06:56,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997648397] [2020-10-29 04:06:56,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:06:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:56,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:56,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:56,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:57,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:57,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:57,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:57,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:57,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:01,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:01,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 04:07:01,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 04:07:01,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 04:07:01,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:01,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:01,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 04:07:01,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:07:01,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 04:07:01,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:02,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:07:02,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:02,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:02,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:02,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:07:02,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:02,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:07:02,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:02,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:02,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:02,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:02,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:02,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:02,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 04:07:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:02,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:02,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:02,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:02,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:02,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:07:02,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:02,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:02,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:07:02,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:02,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:02,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:02,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 04:07:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:02,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:02,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:02,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:02,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:02,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:07:02,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:02,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:02,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:07:02,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:07:02,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:02,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:07:02,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 04:07:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:02,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:02,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:02,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:02,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:02,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:07:02,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:02,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:02,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:02,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:07:02,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:02,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:07:02,131 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 04:07:02,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997648397] [2020-10-29 04:07:02,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:07:02,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 04:07:02,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581122736] [2020-10-29 04:07:02,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 04:07:02,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:07:02,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 04:07:02,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:07:02,134 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand 11 states. [2020-10-29 04:07:02,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:07:02,497 INFO L93 Difference]: Finished difference Result 96 states and 114 transitions. [2020-10-29 04:07:02,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 04:07:02,498 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-10-29 04:07:02,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:07:02,502 INFO L225 Difference]: With dead ends: 96 [2020-10-29 04:07:02,502 INFO L226 Difference]: Without dead ends: 58 [2020-10-29 04:07:02,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:07:02,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-29 04:07:02,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-10-29 04:07:02,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-29 04:07:02,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2020-10-29 04:07:02,522 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 45 [2020-10-29 04:07:02,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:07:02,522 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2020-10-29 04:07:02,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 04:07:02,523 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2020-10-29 04:07:02,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 04:07:02,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:02,525 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:07:02,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:07:02,526 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:02,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:02,526 INFO L82 PathProgramCache]: Analyzing trace with hash -340564633, now seen corresponding path program 1 times [2020-10-29 04:07:02,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:02,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716694764] [2020-10-29 04:07:02,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:02,542 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-29 04:07:02,542 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-29 04:07:02,543 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 04:07:02,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 04:07:02,572 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-29 04:07:02,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:07:02 BoogieIcfgContainer [2020-10-29 04:07:02,575 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 04:07:02,580 INFO L168 Benchmark]: Toolchain (without parser) took 26444.48 ms. Allocated memory was 158.3 MB in the beginning and 398.5 MB in the end (delta: 240.1 MB). Free memory was 133.8 MB in the beginning and 281.9 MB in the end (delta: -148.1 MB). Peak memory consumption was 92.6 MB. Max. memory is 8.0 GB. [2020-10-29 04:07:02,580 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 158.3 MB. Free memory is still 130.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 04:07:02,583 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.73 ms. Allocated memory is still 158.3 MB. Free memory was 133.2 MB in the beginning and 123.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-29 04:07:02,584 INFO L168 Benchmark]: Boogie Preprocessor took 37.25 ms. Allocated memory is still 158.3 MB. Free memory was 123.9 MB in the beginning and 122.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 04:07:02,585 INFO L168 Benchmark]: RCFGBuilder took 391.76 ms. Allocated memory is still 158.3 MB. Free memory was 122.3 MB in the beginning and 107.2 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-29 04:07:02,585 INFO L168 Benchmark]: TraceAbstraction took 25693.17 ms. Allocated memory was 158.3 MB in the beginning and 398.5 MB in the end (delta: 240.1 MB). Free memory was 106.8 MB in the beginning and 281.9 MB in the end (delta: -175.1 MB). Peak memory consumption was 65.3 MB. Max. memory is 8.0 GB. [2020-10-29 04:07:02,592 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 158.3 MB. Free memory is still 130.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 304.73 ms. Allocated memory is still 158.3 MB. Free memory was 133.2 MB in the beginning and 123.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.25 ms. Allocated memory is still 158.3 MB. Free memory was 123.9 MB in the beginning and 122.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 391.76 ms. Allocated memory is still 158.3 MB. Free memory was 122.3 MB in the beginning and 107.2 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 25693.17 ms. Allocated memory was 158.3 MB in the beginning and 398.5 MB in the end (delta: 240.1 MB). Free memory was 106.8 MB in the beginning and 281.9 MB in the end (delta: -175.1 MB). Peak memory consumption was 65.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L6] int N = 1000000; [L8] int i,j=0,a[N]; [L9] unsigned int R=1; [L10] i=0 [L10] COND TRUE iN/2) [L10] i++ [L10] COND TRUE iN/2) [L10] i++ [L10] COND TRUE iN/2 [L13] a[i]=i%R [L10] i++ [L10] COND FALSE !(i