/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/loop-acceleration/diamond_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:36:02,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:36:02,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:36:02,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:36:02,415 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:36:02,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:36:02,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:36:02,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:36:02,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:36:02,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:36:02,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:36:02,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:36:02,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:36:02,449 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:36:02,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:36:02,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:36:02,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:36:02,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:36:02,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:36:02,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:36:02,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:36:02,481 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:36:02,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:36:02,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:36:02,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:36:02,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:36:02,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:36:02,499 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:36:02,499 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:36:02,500 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:36:02,501 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:36:02,502 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:36:02,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:36:02,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:36:02,506 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:36:02,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:36:02,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:36:02,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:36:02,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:36:02,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:36:02,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:36:02,530 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 09:36:02,587 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:36:02,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:36:02,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:36:02,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:36:02,593 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:36:02,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:36:02,593 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:36:02,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:36:02,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:36:02,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:36:02,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:36:02,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:36:02,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:36:02,596 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:36:02,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:36:02,596 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:36:02,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:36:02,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:36:02,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:36:02,597 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:36:02,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:36:02,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:36:02,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:36:02,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:36:02,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:36:02,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:36:02,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:36:02,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:36:02,599 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:36:02,599 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:36:03,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:36:03,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:36:03,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:36:03,115 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:36:03,115 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:36:03,116 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/diamond_2-2.c [2020-10-29 09:36:03,207 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2be8a047/f4c0dc258f814abe8277b1e1e2442bb5/FLAG46af31949 [2020-10-29 09:36:03,884 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:36:03,885 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/diamond_2-2.c [2020-10-29 09:36:03,894 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2be8a047/f4c0dc258f814abe8277b1e1e2442bb5/FLAG46af31949 [2020-10-29 09:36:04,263 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2be8a047/f4c0dc258f814abe8277b1e1e2442bb5 [2020-10-29 09:36:04,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:36:04,276 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:36:04,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:36:04,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:36:04,286 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:36:04,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:36:04" (1/1) ... [2020-10-29 09:36:04,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cbd1600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:36:04, skipping insertion in model container [2020-10-29 09:36:04,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:36:04" (1/1) ... [2020-10-29 09:36:04,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:36:04,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:36:04,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:36:04,500 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:36:04,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:36:04,538 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:36:04,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:36:04 WrapperNode [2020-10-29 09:36:04,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:36:04,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:36:04,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:36:04,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:36:04,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:36:04" (1/1) ... [2020-10-29 09:36:04,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:36:04" (1/1) ... [2020-10-29 09:36:04,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:36:04" (1/1) ... [2020-10-29 09:36:04,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:36:04" (1/1) ... [2020-10-29 09:36:04,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:36:04" (1/1) ... [2020-10-29 09:36:04,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:36:04" (1/1) ... [2020-10-29 09:36:04,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:36:04" (1/1) ... [2020-10-29 09:36:04,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:36:04,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:36:04,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:36:04,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:36:04,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:36:04" (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 09:36:04,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:36:04,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:36:04,644 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:36:04,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 09:36:04,645 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:36:04,645 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:36:04,646 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:36:04,646 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:36:04,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:36:04,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-29 09:36:04,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 09:36:04,647 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:36:04,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:36:04,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:36:04,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:36:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:36:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:36:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:36:05,270 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:36:05,271 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 09:36:05,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:36:05 BoogieIcfgContainer [2020-10-29 09:36:05,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:36:05,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:36:05,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:36:05,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:36:05,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:36:04" (1/3) ... [2020-10-29 09:36:05,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d1635a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:36:05, skipping insertion in model container [2020-10-29 09:36:05,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:36:04" (2/3) ... [2020-10-29 09:36:05,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d1635a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:36:05, skipping insertion in model container [2020-10-29 09:36:05,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:36:05" (3/3) ... [2020-10-29 09:36:05,283 INFO L111 eAbstractionObserver]: Analyzing ICFG diamond_2-2.c [2020-10-29 09:36:05,295 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:36:05,320 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:36:05,334 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:36:05,363 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:36:05,363 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:36:05,363 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:36:05,363 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:36:05,363 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:36:05,363 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:36:05,363 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:36:05,364 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:36:05,381 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-29 09:36:05,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-29 09:36:05,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:36:05,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:36:05,389 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:36:05,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:36:05,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1511546603, now seen corresponding path program 1 times [2020-10-29 09:36:05,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:36:05,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066795401] [2020-10-29 09:36:05,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:36:05,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:36:05,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:05,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:36:05,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 09:36:05,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:36:05,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-29 09:36:05,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:36:05,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:36:05,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:36:05,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:36:05,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:36:05,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 09:36:05,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:36:05,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:36:05,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:05,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:36:05,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:36:05,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:36:05,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 09:36:05,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:36:05,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:36:05,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:36:05,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:36:05,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:36:05,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:36:05,885 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 09:36:05,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066795401] [2020-10-29 09:36:05,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:36:05,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 09:36:05,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257912628] [2020-10-29 09:36:05,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-29 09:36:05,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:36:05,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-29 09:36:05,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 09:36:05,930 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-10-29 09:36:06,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:36:06,038 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2020-10-29 09:36:06,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 09:36:06,040 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-29 09:36:06,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:36:06,050 INFO L225 Difference]: With dead ends: 44 [2020-10-29 09:36:06,050 INFO L226 Difference]: Without dead ends: 23 [2020-10-29 09:36:06,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 09:36:06,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-29 09:36:06,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-29 09:36:06,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-29 09:36:06,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2020-10-29 09:36:06,120 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 33 transitions. Word has length 12 [2020-10-29 09:36:06,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:36:06,121 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 33 transitions. [2020-10-29 09:36:06,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-29 09:36:06,121 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 33 transitions. [2020-10-29 09:36:06,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-29 09:36:06,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:36:06,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:36:06,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:36:06,125 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:36:06,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:36:06,127 INFO L82 PathProgramCache]: Analyzing trace with hash 951155029, now seen corresponding path program 1 times [2020-10-29 09:36:06,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:36:06,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403093059] [2020-10-29 09:36:06,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:36:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:36:06,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:06,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:36:06,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 09:36:06,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:36:06,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 09:36:06,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:36:06,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:36:06,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:36:06,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:36:06,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:36:06,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:36:06,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:36:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:36:06,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:06,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:36:06,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:36:06,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:36:06,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:36:06,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:36:06,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:36:06,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:36:06,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:36:06,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:36:06,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:36:06,386 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 09:36:06,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403093059] [2020-10-29 09:36:06,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:36:06,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:36:06,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554789557] [2020-10-29 09:36:06,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:36:06,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:36:06,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:36:06,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:36:06,392 INFO L87 Difference]: Start difference. First operand 23 states and 33 transitions. Second operand 4 states. [2020-10-29 09:36:06,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:36:06,578 INFO L93 Difference]: Finished difference Result 31 states and 42 transitions. [2020-10-29 09:36:06,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 09:36:06,579 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-29 09:36:06,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:36:06,582 INFO L225 Difference]: With dead ends: 31 [2020-10-29 09:36:06,582 INFO L226 Difference]: Without dead ends: 25 [2020-10-29 09:36:06,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:36:06,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-29 09:36:06,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2020-10-29 09:36:06,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-29 09:36:06,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2020-10-29 09:36:06,594 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 12 [2020-10-29 09:36:06,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:36:06,594 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2020-10-29 09:36:06,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:36:06,595 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2020-10-29 09:36:06,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 09:36:06,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:36:06,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:36:06,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:36:06,597 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:36:06,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:36:06,597 INFO L82 PathProgramCache]: Analyzing trace with hash -310557545, now seen corresponding path program 1 times [2020-10-29 09:36:06,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:36:06,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436000386] [2020-10-29 09:36:06,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:36:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:36:06,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:06,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:06,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:06,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:06,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:06,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:06,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:06,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:06,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:06,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:06,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:06,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:06,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:06,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:07,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:07,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:07,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:36:07,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 09:36:07,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 09:36:07,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 665 [2020-10-29 09:36:07,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:36:07,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:36:07,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:36:07,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 09:36:07,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:36:07,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:36:07,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:36:07,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:36:07,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:07,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:36:07,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:36:07,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:36:07,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:36:07,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:36:07,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:36:07,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:36:07,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:36:07,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:36:07,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:36:07,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:36:07,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436000386] [2020-10-29 09:36:07,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:36:07,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:36:07,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950197943] [2020-10-29 09:36:07,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:36:07,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:36:07,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:36:07,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:36:07,347 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 4 states. [2020-10-29 09:36:07,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:36:07,541 INFO L93 Difference]: Finished difference Result 53 states and 84 transitions. [2020-10-29 09:36:07,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 09:36:07,542 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-29 09:36:07,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:36:07,544 INFO L225 Difference]: With dead ends: 53 [2020-10-29 09:36:07,544 INFO L226 Difference]: Without dead ends: 36 [2020-10-29 09:36:07,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:36:07,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-29 09:36:07,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-29 09:36:07,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-29 09:36:07,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2020-10-29 09:36:07,556 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 23 [2020-10-29 09:36:07,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:36:07,556 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2020-10-29 09:36:07,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:36:07,557 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2020-10-29 09:36:07,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 09:36:07,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:36:07,558 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:36:07,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:36:07,558 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:36:07,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:36:07,559 INFO L82 PathProgramCache]: Analyzing trace with hash -167075749, now seen corresponding path program 1 times [2020-10-29 09:36:07,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:36:07,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270703956] [2020-10-29 09:36:07,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:36:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:36:07,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:07,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:36:07,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 09:36:07,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:36:07,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-29 09:36:07,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:36:07,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:36:07,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:36:07,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:36:07,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:36:07,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:36:08,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:36:08,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:36:08,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:08,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:36:08,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:36:08,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:36:08,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:36:08,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:36:08,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:36:08,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:36:08,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:36:08,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:36:08,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:36:08,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:36:08,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270703956] [2020-10-29 09:36:08,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:36:08,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:36:08,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698063701] [2020-10-29 09:36:08,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:36:08,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:36:08,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:36:08,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:36:08,153 INFO L87 Difference]: Start difference. First operand 35 states and 46 transitions. Second operand 13 states. [2020-10-29 09:36:08,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:36:08,792 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2020-10-29 09:36:08,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:36:08,793 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 23 [2020-10-29 09:36:08,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:36:08,794 INFO L225 Difference]: With dead ends: 53 [2020-10-29 09:36:08,795 INFO L226 Difference]: Without dead ends: 47 [2020-10-29 09:36:08,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:36:08,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-29 09:36:08,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-10-29 09:36:08,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-29 09:36:08,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2020-10-29 09:36:08,805 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 23 [2020-10-29 09:36:08,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:36:08,805 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2020-10-29 09:36:08,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:36:08,805 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2020-10-29 09:36:08,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 09:36:08,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:36:08,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:36:08,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:36:08,807 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:36:08,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:36:08,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1809449125, now seen corresponding path program 1 times [2020-10-29 09:36:08,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:36:08,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874207426] [2020-10-29 09:36:08,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:36:08,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:36:08,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:08,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:08,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:08,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:08,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:08,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:08,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:08,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:08,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:08,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:08,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:08,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:08,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:08,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:08,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:09,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:09,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:36:09,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 09:36:09,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 09:36:09,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-29 09:36:09,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:36:09,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:36:09,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:36:09,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 09:36:09,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:36:09,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:36:09,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:36:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:36:09,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:09,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:36:09,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:36:09,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:36:09,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:36:09,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:36:09,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:36:09,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:36:09,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:36:09,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:36:09,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:36:09,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:36:09,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874207426] [2020-10-29 09:36:09,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:36:09,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:36:09,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28989996] [2020-10-29 09:36:09,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:36:09,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:36:09,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:36:09,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:36:09,139 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand 4 states. [2020-10-29 09:36:09,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:36:09,265 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2020-10-29 09:36:09,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 09:36:09,265 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-29 09:36:09,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:36:09,266 INFO L225 Difference]: With dead ends: 64 [2020-10-29 09:36:09,266 INFO L226 Difference]: Without dead ends: 47 [2020-10-29 09:36:09,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:36:09,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-29 09:36:09,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-10-29 09:36:09,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-29 09:36:09,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-10-29 09:36:09,276 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 23 [2020-10-29 09:36:09,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:36:09,276 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-10-29 09:36:09,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:36:09,276 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-10-29 09:36:09,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 09:36:09,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:36:09,277 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:36:09,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:36:09,278 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:36:09,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:36:09,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1519857435, now seen corresponding path program 1 times [2020-10-29 09:36:09,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:36:09,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345778773] [2020-10-29 09:36:09,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:36:09,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:36:09,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:09,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:09,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:36:09,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 09:36:09,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:36:09,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 492 [2020-10-29 09:36:09,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:36:09,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:36:09,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:36:09,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:36:09,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 09:36:09,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:36:10,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:36:10,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:36:10,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:10,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:36:10,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:36:10,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:36:10,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:36:10,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:36:10,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:36:10,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:36:10,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:36:10,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:36:10,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:36:10,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:36:10,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345778773] [2020-10-29 09:36:10,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:36:10,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 09:36:10,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462136688] [2020-10-29 09:36:10,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:36:10,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:36:10,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:36:10,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:36:10,079 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 14 states. [2020-10-29 09:36:10,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:36:10,823 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2020-10-29 09:36:10,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 09:36:10,826 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 23 [2020-10-29 09:36:10,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:36:10,827 INFO L225 Difference]: With dead ends: 63 [2020-10-29 09:36:10,827 INFO L226 Difference]: Without dead ends: 57 [2020-10-29 09:36:10,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2020-10-29 09:36:10,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-29 09:36:10,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-10-29 09:36:10,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-29 09:36:10,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2020-10-29 09:36:10,842 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 23 [2020-10-29 09:36:10,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:36:10,842 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2020-10-29 09:36:10,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:36:10,843 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2020-10-29 09:36:10,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 09:36:10,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:36:10,845 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:36:10,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:36:10,845 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:36:10,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:36:10,846 INFO L82 PathProgramCache]: Analyzing trace with hash -714278507, now seen corresponding path program 2 times [2020-10-29 09:36:10,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:36:10,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103479900] [2020-10-29 09:36:10,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:36:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:36:10,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:11,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:36:11,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 09:36:11,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:36:11,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-29 09:36:11,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:36:11,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:36:11,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:36:11,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:36:11,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 09:36:11,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:36:11,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:36:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:36:11,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:11,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:36:11,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:36:11,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:36:11,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:36:11,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:36:11,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:36:11,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:36:11,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:36:11,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:36:11,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:36:11,372 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:36:11,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103479900] [2020-10-29 09:36:11,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:36:11,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:36:11,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322612219] [2020-10-29 09:36:11,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:36:11,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:36:11,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:36:11,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:36:11,376 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 9 states. [2020-10-29 09:36:11,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:36:11,719 INFO L93 Difference]: Finished difference Result 62 states and 63 transitions. [2020-10-29 09:36:11,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:36:11,720 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-10-29 09:36:11,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:36:11,721 INFO L225 Difference]: With dead ends: 62 [2020-10-29 09:36:11,722 INFO L226 Difference]: Without dead ends: 35 [2020-10-29 09:36:11,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:36:11,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-29 09:36:11,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-29 09:36:11,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-29 09:36:11,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-10-29 09:36:11,732 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 34 [2020-10-29 09:36:11,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:36:11,733 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-10-29 09:36:11,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:36:11,733 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-10-29 09:36:11,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 09:36:11,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:36:11,736 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:36:11,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:36:11,736 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:36:11,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:36:11,737 INFO L82 PathProgramCache]: Analyzing trace with hash 350503317, now seen corresponding path program 2 times [2020-10-29 09:36:11,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:36:11,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17832307] [2020-10-29 09:36:11,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:36:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:36:11,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:11,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:12,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:36:12,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 09:36:12,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:36:12,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 892 [2020-10-29 09:36:12,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:36:12,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:36:12,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 09:36:12,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:36:12,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 09:36:12,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:36:13,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:36:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:36:13,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:13,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:36:13,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:36:13,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:36:13,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:36:13,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:36:13,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:36:13,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:36:13,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:36:13,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:36:13,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:36:13,210 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:36:13,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17832307] [2020-10-29 09:36:13,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:36:13,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 09:36:13,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643801063] [2020-10-29 09:36:13,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 09:36:13,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:36:13,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 09:36:13,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2020-10-29 09:36:13,220 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 24 states. [2020-10-29 09:36:14,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:36:14,970 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2020-10-29 09:36:14,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 09:36:14,971 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 34 [2020-10-29 09:36:14,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:36:14,974 INFO L225 Difference]: With dead ends: 53 [2020-10-29 09:36:14,974 INFO L226 Difference]: Without dead ends: 47 [2020-10-29 09:36:14,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=189, Invalid=1791, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 09:36:14,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-29 09:36:14,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-10-29 09:36:14,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-29 09:36:14,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2020-10-29 09:36:14,989 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 34 [2020-10-29 09:36:14,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:36:14,989 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2020-10-29 09:36:14,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 09:36:14,990 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2020-10-29 09:36:14,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 09:36:14,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:36:14,993 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:36:14,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 09:36:14,993 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:36:14,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:36:14,995 INFO L82 PathProgramCache]: Analyzing trace with hash 12631771, now seen corresponding path program 3 times [2020-10-29 09:36:14,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:36:14,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300748758] [2020-10-29 09:36:14,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:36:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:36:15,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:15,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:16,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:36:16,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 09:36:16,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:36:16,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1685 [2020-10-29 09:36:16,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:36:16,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:36:16,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 09:36:16,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:36:16,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 09:36:16,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:36:17,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:36:17,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:36:17,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:17,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:36:17,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:36:17,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:36:17,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:36:17,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:36:17,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:36:17,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:36:17,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:36:17,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:36:17,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:36:17,781 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:36:17,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300748758] [2020-10-29 09:36:17,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:36:17,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 09:36:17,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392961992] [2020-10-29 09:36:17,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 09:36:17,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:36:17,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 09:36:17,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 09:36:17,784 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 34 states. [2020-10-29 09:36:20,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:36:20,556 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2020-10-29 09:36:20,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 09:36:20,557 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 45 [2020-10-29 09:36:20,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:36:20,558 INFO L225 Difference]: With dead ends: 64 [2020-10-29 09:36:20,558 INFO L226 Difference]: Without dead ends: 58 [2020-10-29 09:36:20,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=279, Invalid=3881, Unknown=0, NotChecked=0, Total=4160 [2020-10-29 09:36:20,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-29 09:36:20,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-29 09:36:20,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 09:36:20,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2020-10-29 09:36:20,580 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 45 [2020-10-29 09:36:20,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:36:20,580 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2020-10-29 09:36:20,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 09:36:20,580 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2020-10-29 09:36:20,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 09:36:20,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:36:20,584 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:36:20,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 09:36:20,585 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:36:20,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:36:20,585 INFO L82 PathProgramCache]: Analyzing trace with hash 733436373, now seen corresponding path program 4 times [2020-10-29 09:36:20,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:36:20,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279130534] [2020-10-29 09:36:20,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:36:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:36:20,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:21,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:22,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:36:22,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 09:36:22,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:36:22,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1649 [2020-10-29 09:36:22,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:36:22,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:36:22,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-29 09:36:22,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:36:22,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 09:36:22,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:36:23,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:36:23,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:36:23,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:23,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:36:23,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:36:23,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:36:23,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:36:23,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:36:23,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:36:23,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:36:23,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:36:23,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:36:23,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:36:23,873 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:36:23,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279130534] [2020-10-29 09:36:23,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:36:23,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-29 09:36:23,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301161019] [2020-10-29 09:36:23,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-29 09:36:23,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:36:23,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-29 09:36:23,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1767, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 09:36:23,876 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 44 states. [2020-10-29 09:36:28,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:36:28,287 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2020-10-29 09:36:28,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-29 09:36:28,288 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 56 [2020-10-29 09:36:28,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:36:28,289 INFO L225 Difference]: With dead ends: 75 [2020-10-29 09:36:28,289 INFO L226 Difference]: Without dead ends: 69 [2020-10-29 09:36:28,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=369, Invalid=6771, Unknown=0, NotChecked=0, Total=7140 [2020-10-29 09:36:28,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-29 09:36:28,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2020-10-29 09:36:28,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-29 09:36:28,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2020-10-29 09:36:28,301 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 56 [2020-10-29 09:36:28,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:36:28,302 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2020-10-29 09:36:28,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-29 09:36:28,302 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2020-10-29 09:36:28,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 09:36:28,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:36:28,303 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:36:28,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 09:36:28,304 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:36:28,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:36:28,305 INFO L82 PathProgramCache]: Analyzing trace with hash 200801947, now seen corresponding path program 5 times [2020-10-29 09:36:28,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:36:28,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2147294212] [2020-10-29 09:36:28,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:36:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:36:28,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:30,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:36:30,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 09:36:30,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:36:30,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1700 [2020-10-29 09:36:30,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:36:30,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:36:30,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 54 [2020-10-29 09:36:30,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:36:30,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 09:36:30,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:36:30,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:36:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:36:30,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:30,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:36:30,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:36:30,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:36:30,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:36:30,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:36:30,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:36:30,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:36:30,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:36:30,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:36:30,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:36:30,712 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 44 proven. 13 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-10-29 09:36:30,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2147294212] [2020-10-29 09:36:30,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:36:30,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:36:30,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483931328] [2020-10-29 09:36:30,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:36:30,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:36:30,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:36:30,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:36:30,714 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 9 states. [2020-10-29 09:36:30,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:36:30,966 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2020-10-29 09:36:30,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:36:30,966 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-10-29 09:36:30,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:36:30,968 INFO L225 Difference]: With dead ends: 68 [2020-10-29 09:36:30,968 INFO L226 Difference]: Without dead ends: 0 [2020-10-29 09:36:30,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 47 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:36:30,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-29 09:36:30,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-29 09:36:30,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-29 09:36:30,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-29 09:36:30,969 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 67 [2020-10-29 09:36:30,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:36:30,970 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-29 09:36:30,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:36:30,970 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-29 09:36:30,970 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-29 09:36:30,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 09:36:30,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-29 09:36:31,199 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 33 [2020-10-29 09:36:31,328 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-29 09:36:31,329 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-29 09:36:31,329 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-29 09:36:31,329 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-29 09:36:31,329 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-29 09:36:31,330 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-29 09:36:31,330 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-29 09:36:31,330 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-29 09:36:31,330 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-29 09:36:31,330 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-29 09:36:31,330 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-29 09:36:31,330 INFO L274 CegarLoopResult]: For program point L27-1(lines 17 47) no Hoare annotation was computed. [2020-10-29 09:36:31,330 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 13 50) no Hoare annotation was computed. [2020-10-29 09:36:31,330 INFO L274 CegarLoopResult]: For program point L36-1(lines 17 47) no Hoare annotation was computed. [2020-10-29 09:36:31,331 INFO L274 CegarLoopResult]: For program point L24-1(lines 17 47) no Hoare annotation was computed. [2020-10-29 09:36:31,331 INFO L270 CegarLoopResult]: At program point L45-1(lines 17 47) the Hoare annotation is: (let ((.cse0 (div main_~y~0 2))) (or (let ((.cse1 (+ main_~x~0 5))) (and (< (+ main_~x~0 (* 2 .cse0)) (+ (* 2 (div main_~x~0 2)) main_~y~0 1)) (<= 0 .cse1) (<= .cse1 0))) (and (<= 0 main_~x~0) (<= main_~x~0 0)) (and (<= main_~x~0 (+ (* 2 (div (+ main_~x~0 main_~y~0 (* .cse0 (- 2)) (- 4)) 2)) 4)) (= main_~y~0 (* .cse0 2))))) [2020-10-29 09:36:31,331 INFO L274 CegarLoopResult]: For program point L33-1(lines 17 47) no Hoare annotation was computed. [2020-10-29 09:36:31,331 INFO L274 CegarLoopResult]: For program point L21-1(lines 17 47) no Hoare annotation was computed. [2020-10-29 09:36:31,331 INFO L270 CegarLoopResult]: At program point L17-2(lines 17 47) the Hoare annotation is: (let ((.cse0 (div main_~y~0 2))) (let ((.cse1 (* 2 .cse0))) (or (and (<= main_~x~0 (+ (* 2 (div (+ main_~x~0 main_~y~0 (* .cse0 (- 2)) (- 4)) 2)) 4)) (<= main_~y~0 .cse1)) (let ((.cse3 (* 2 (div main_~x~0 2))) (.cse2 (+ main_~x~0 .cse1))) (and (< .cse2 (+ .cse3 main_~y~0 1)) (<= (+ .cse3 main_~y~0) .cse2) (<= (+ main_~x~0 5) 0)))))) [2020-10-29 09:36:31,331 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 13 50) no Hoare annotation was computed. [2020-10-29 09:36:31,332 INFO L274 CegarLoopResult]: For program point L42-1(lines 17 47) no Hoare annotation was computed. [2020-10-29 09:36:31,332 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 13 50) the Hoare annotation is: true [2020-10-29 09:36:31,332 INFO L274 CegarLoopResult]: For program point L30-1(lines 17 47) no Hoare annotation was computed. [2020-10-29 09:36:31,332 INFO L274 CegarLoopResult]: For program point L18(lines 18 19) no Hoare annotation was computed. [2020-10-29 09:36:31,332 INFO L274 CegarLoopResult]: For program point L18-2(lines 17 47) no Hoare annotation was computed. [2020-10-29 09:36:31,332 INFO L274 CegarLoopResult]: For program point L39-1(lines 17 47) no Hoare annotation was computed. [2020-10-29 09:36:31,332 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-10-29 09:36:31,332 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-10-29 09:36:31,332 INFO L270 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-29 09:36:31,333 INFO L274 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-10-29 09:36:31,333 INFO L274 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-10-29 09:36:31,333 INFO L274 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-10-29 09:36:31,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:36:31 BoogieIcfgContainer [2020-10-29 09:36:31,357 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:36:31,360 INFO L168 Benchmark]: Toolchain (without parser) took 27088.33 ms. Allocated memory was 151.0 MB in the beginning and 385.9 MB in the end (delta: 234.9 MB). Free memory was 126.3 MB in the beginning and 277.5 MB in the end (delta: -151.2 MB). Peak memory consumption was 84.9 MB. Max. memory is 8.0 GB. [2020-10-29 09:36:31,362 INFO L168 Benchmark]: CDTParser took 0.68 ms. Allocated memory is still 151.0 MB. Free memory is still 124.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:36:31,368 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.18 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 09:36:31,368 INFO L168 Benchmark]: Boogie Preprocessor took 38.25 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:36:31,369 INFO L168 Benchmark]: RCFGBuilder took 693.55 ms. Allocated memory is still 151.0 MB. Free memory was 114.3 MB in the beginning and 98.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-10-29 09:36:31,372 INFO L168 Benchmark]: TraceAbstraction took 26082.86 ms. Allocated memory was 151.0 MB in the beginning and 385.9 MB in the end (delta: 234.9 MB). Free memory was 97.7 MB in the beginning and 277.5 MB in the end (delta: -179.8 MB). Peak memory consumption was 56.6 MB. Max. memory is 8.0 GB. [2020-10-29 09:36:31,382 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68 ms. Allocated memory is still 151.0 MB. Free memory is still 124.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 258.18 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.25 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 693.55 ms. Allocated memory is still 151.0 MB. Free memory was 114.3 MB in the beginning and 98.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 26082.86 ms. Allocated memory was 151.0 MB in the beginning and 385.9 MB in the end (delta: 234.9 MB). Free memory was 97.7 MB in the beginning and 277.5 MB in the end (delta: -179.8 MB). Peak memory consumption was 56.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((x + 2 * (y / 2) < 2 * (x / 2) + y + 1 && 0 <= x + 5) && x + 5 <= 0) || (0 <= x && x <= 0)) || (x <= 2 * ((x + y + y / 2 * -2 + -4) / 2) + 4 && y == y / 2 * 2) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 25.6s, OverallIterations: 11, TraceHistogramMax: 5, AutomataDifference: 11.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 210 SDtfs, 296 SDslu, 448 SDs, 0 SdLazy, 4445 SolverSat, 328 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 355 GetRequests, 43 SyntacticMatches, 47 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1671 ImplicationChecksByTransitivity, 11.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 8 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 39 PreInvPairs, 48 NumberOfFragments, 162 HoareAnnotationTreeSize, 39 FomulaSimplifications, 580 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 300 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 13.2s InterpolantComputationTime, 352 NumberOfCodeBlocks, 352 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 341 ConstructedInterpolants, 0 QuantifiedInterpolants, 142703 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 116/251 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...