/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=SHALLOWEST --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/ldv-regression/test22-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:14:21,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:14:21,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:14:21,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:14:21,477 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:14:21,479 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:14:21,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:14:21,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:14:21,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:14:21,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:14:21,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:14:21,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:14:21,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:14:21,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:14:21,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:14:21,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:14:21,495 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:14:21,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:14:21,539 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:14:21,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:14:21,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:14:21,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:14:21,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:14:21,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:14:21,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:14:21,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:14:21,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:14:21,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:14:21,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:14:21,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:14:21,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:14:21,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:14:21,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:14:21,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:14:21,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:14:21,563 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:14:21,564 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:14:21,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:14:21,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:14:21,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:14:21,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:14:21,567 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 [2020-10-27 01:14:21,595 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:14:21,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:14:21,597 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:14:21,598 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:14:21,598 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:14:21,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:14:21,598 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:14:21,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:14:21,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:14:21,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:14:21,599 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:14:21,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:14:21,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:14:21,600 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:14:21,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:14:21,600 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:14:21,601 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:14:21,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:14:21,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:14:21,601 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:14:21,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:14:21,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:14:21,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:14:21,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:14:21,602 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:14:21,603 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:14:21,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:14:21,603 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:14:21,603 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:14:21,604 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:14:22,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:14:22,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:14:22,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:14:22,109 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:14:22,110 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:14:22,111 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test22-2.c [2020-10-27 01:14:22,190 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/abae518e8/c911a690419e46cf93877b2c56c2a0c6/FLAG9a0eb1027 [2020-10-27 01:14:22,786 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:14:22,787 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test22-2.c [2020-10-27 01:14:22,795 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/abae518e8/c911a690419e46cf93877b2c56c2a0c6/FLAG9a0eb1027 [2020-10-27 01:14:23,093 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/abae518e8/c911a690419e46cf93877b2c56c2a0c6 [2020-10-27 01:14:23,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:14:23,105 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:14:23,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:14:23,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:14:23,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:14:23,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:14:23" (1/1) ... [2020-10-27 01:14:23,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16d6ae06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:14:23, skipping insertion in model container [2020-10-27 01:14:23,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:14:23" (1/1) ... [2020-10-27 01:14:23,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:14:23,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:14:23,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:14:23,339 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:14:23,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:14:23,383 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:14:23,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:14:23 WrapperNode [2020-10-27 01:14:23,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:14:23,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:14:23,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:14:23,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:14:23,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:14:23" (1/1) ... [2020-10-27 01:14:23,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:14:23" (1/1) ... [2020-10-27 01:14:23,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:14:23" (1/1) ... [2020-10-27 01:14:23,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:14:23" (1/1) ... [2020-10-27 01:14:23,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:14:23" (1/1) ... [2020-10-27 01:14:23,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:14:23" (1/1) ... [2020-10-27 01:14:23,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:14:23" (1/1) ... [2020-10-27 01:14:23,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:14:23,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:14:23,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:14:23,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:14:23,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:14:23" (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 [2020-10-27 01:14:23,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:14:23,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:14:23,616 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:14:23,617 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 01:14:23,617 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-10-27 01:14:23,618 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 01:14:23,619 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:14:23,619 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:14:23,619 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:14:23,619 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:14:23,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:14:23,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 01:14:23,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 01:14:23,621 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 01:14:23,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:14:23,623 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-10-27 01:14:23,623 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 01:14:23,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:14:23,624 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:14:23,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:14:23,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:14:23,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:14:23,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:14:24,310 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:14:24,311 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 01:14:24,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:14:24 BoogieIcfgContainer [2020-10-27 01:14:24,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:14:24,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:14:24,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:14:24,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:14:24,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:14:23" (1/3) ... [2020-10-27 01:14:24,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b06710f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:14:24, skipping insertion in model container [2020-10-27 01:14:24,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:14:23" (2/3) ... [2020-10-27 01:14:24,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b06710f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:14:24, skipping insertion in model container [2020-10-27 01:14:24,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:14:24" (3/3) ... [2020-10-27 01:14:24,326 INFO L111 eAbstractionObserver]: Analyzing ICFG test22-2.c [2020-10-27 01:14:24,343 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:14:24,353 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:14:24,368 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:14:24,409 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:14:24,409 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:14:24,409 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:14:24,409 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:14:24,409 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:14:24,410 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:14:24,410 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:14:24,410 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:14:24,432 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-10-27 01:14:24,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-27 01:14:24,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:14:24,440 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:14:24,441 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:14:24,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:14:24,448 INFO L82 PathProgramCache]: Analyzing trace with hash -881056993, now seen corresponding path program 1 times [2020-10-27 01:14:24,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:14:24,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675037265] [2020-10-27 01:14:24,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:14:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:24,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:24,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:24,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:26,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:26,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 01:14:26,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:14:26,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1520 [2020-10-27 01:14:26,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:26,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 01:14:26,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:14:26,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 01:14:26,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:14:26,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:14:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:26,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:26,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:26,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:14:26,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:26,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 01:14:26,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:26,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:14:26,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:26,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:14:26,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:26,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:14:26,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:26,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:26,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:26,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:14:26,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:26,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:14:26,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:26,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:14:26,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:26,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:14:26,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:26,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:14:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:26,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:26,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:26,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:14:26,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:26,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 01:14:26,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:26,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:14:26,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:26,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:14:26,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:26,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:14:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:26,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:26,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:26,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:14:26,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:26,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 01:14:26,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:26,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:14:26,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:26,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:14:26,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:26,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 01:14:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:26,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:26,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:26,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:14:26,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:26,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:14:26,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:26,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:14:26,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:26,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:14:26,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:26,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 01:14:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:26,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:26,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:26,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:14:26,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:26,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:14:26,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:26,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:14:26,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:14:26,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:14:26,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:26,654 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 01:14:26,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675037265] [2020-10-27 01:14:26,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:14:26,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 01:14:26,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739617959] [2020-10-27 01:14:26,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 01:14:26,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:14:26,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 01:14:26,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-27 01:14:26,683 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 12 states. [2020-10-27 01:14:27,299 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2020-10-27 01:14:27,673 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-10-27 01:14:27,852 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-10-27 01:14:28,114 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-10-27 01:14:28,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:14:28,477 INFO L93 Difference]: Finished difference Result 90 states and 123 transitions. [2020-10-27 01:14:28,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 01:14:28,480 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2020-10-27 01:14:28,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:14:28,490 INFO L225 Difference]: With dead ends: 90 [2020-10-27 01:14:28,491 INFO L226 Difference]: Without dead ends: 59 [2020-10-27 01:14:28,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2020-10-27 01:14:28,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-27 01:14:28,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 41. [2020-10-27 01:14:28,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-27 01:14:28,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2020-10-27 01:14:28,555 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 38 [2020-10-27 01:14:28,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:14:28,556 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2020-10-27 01:14:28,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 01:14:28,556 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2020-10-27 01:14:28,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 01:14:28,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:14:28,559 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:14:28,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:14:28,560 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:14:28,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:14:28,561 INFO L82 PathProgramCache]: Analyzing trace with hash -96395910, now seen corresponding path program 1 times [2020-10-27 01:14:28,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:14:28,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310940038] [2020-10-27 01:14:28,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:14:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:28,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:28,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:30,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:30,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 01:14:30,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:14:30,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1520 [2020-10-27 01:14:30,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:30,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 01:14:30,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 01:14:30,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 01:14:30,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:30,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:14:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:30,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:30,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:30,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:14:30,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:30,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 01:14:30,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:30,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:14:30,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:30,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:14:30,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:30,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:14:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:30,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:30,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:30,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:14:30,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:30,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:14:30,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:30,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:14:30,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:30,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:14:30,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:14:30,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:14:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:30,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:30,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:30,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:14:30,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:30,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:14:30,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:30,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:14:30,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:30,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:14:30,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:30,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:14:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:30,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:30,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:30,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:14:30,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:30,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:14:30,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:30,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:14:30,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:30,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:14:30,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:30,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 01:14:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:30,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:30,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:30,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:14:30,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:30,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:14:30,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:30,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:14:30,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:30,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:14:30,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:30,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 01:14:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:30,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:30,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:30,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:14:30,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:30,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:14:30,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:30,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:14:30,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:14:30,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:14:30,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:30,430 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 01:14:30,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310940038] [2020-10-27 01:14:30,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:14:30,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 01:14:30,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542433877] [2020-10-27 01:14:30,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 01:14:30,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:14:30,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 01:14:30,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-27 01:14:30,434 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand 12 states. [2020-10-27 01:14:31,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:14:31,612 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2020-10-27 01:14:31,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 01:14:31,613 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2020-10-27 01:14:31,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:14:31,615 INFO L225 Difference]: With dead ends: 74 [2020-10-27 01:14:31,616 INFO L226 Difference]: Without dead ends: 65 [2020-10-27 01:14:31,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2020-10-27 01:14:31,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-27 01:14:31,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 50. [2020-10-27 01:14:31,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-27 01:14:31,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 63 transitions. [2020-10-27 01:14:31,636 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 63 transitions. Word has length 39 [2020-10-27 01:14:31,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:14:31,636 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 63 transitions. [2020-10-27 01:14:31,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 01:14:31,637 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 63 transitions. [2020-10-27 01:14:31,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 01:14:31,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:14:31,639 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:14:31,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:14:31,639 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:14:31,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:14:31,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1684743812, now seen corresponding path program 1 times [2020-10-27 01:14:31,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:14:31,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354478067] [2020-10-27 01:14:31,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:14:31,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:14:31,663 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:14:31,663 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:14:31,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:14:31,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:14:31 BoogieIcfgContainer [2020-10-27 01:14:31,688 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:14:31,691 INFO L168 Benchmark]: Toolchain (without parser) took 8591.74 ms. Allocated memory was 156.2 MB in the beginning and 225.4 MB in the end (delta: 69.2 MB). Free memory was 137.9 MB in the beginning and 85.1 MB in the end (delta: 52.9 MB). Peak memory consumption was 122.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:14:31,692 INFO L168 Benchmark]: CDTParser took 0.62 ms. Allocated memory is still 156.2 MB. Free memory was 128.6 MB in the beginning and 128.5 MB in the end (delta: 127.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:14:31,693 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.35 ms. Allocated memory is still 156.2 MB. Free memory was 137.3 MB in the beginning and 127.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:14:31,694 INFO L168 Benchmark]: Boogie Preprocessor took 57.92 ms. Allocated memory is still 156.2 MB. Free memory was 127.5 MB in the beginning and 125.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:14:31,695 INFO L168 Benchmark]: RCFGBuilder took 869.10 ms. Allocated memory is still 156.2 MB. Free memory was 125.8 MB in the beginning and 122.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-10-27 01:14:31,696 INFO L168 Benchmark]: TraceAbstraction took 7371.05 ms. Allocated memory was 156.2 MB in the beginning and 225.4 MB in the end (delta: 69.2 MB). Free memory was 122.5 MB in the beginning and 85.1 MB in the end (delta: 37.4 MB). Peak memory consumption was 108.0 MB. Max. memory is 8.0 GB. [2020-10-27 01:14:31,699 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62 ms. Allocated memory is still 156.2 MB. Free memory was 128.6 MB in the beginning and 128.5 MB in the end (delta: 127.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 276.35 ms. Allocated memory is still 156.2 MB. Free memory was 137.3 MB in the beginning and 127.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 57.92 ms. Allocated memory is still 156.2 MB. Free memory was 127.5 MB in the beginning and 125.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 869.10 ms. Allocated memory is still 156.2 MB. Free memory was 125.8 MB in the beginning and 122.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7371.05 ms. Allocated memory was 156.2 MB in the beginning and 225.4 MB in the end (delta: 69.2 MB). Free memory was 122.5 MB in the beginning and 85.1 MB in the end (delta: 37.4 MB). Peak memory consumption was 108.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L11] struct dummy d1, d2; [L34] CALL init() [L15] d1.a = __VERIFIER_nondet_int() [L16] d1.b = __VERIFIER_nondet_int() [L18] d2.a = __VERIFIER_nondet_int() [L19] d2.b = __VERIFIER_nondet_int() [L34] RET init() [L35] CALL, EXPR get_dummy() [L24] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L24] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L35] RET, EXPR get_dummy() [L35] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L35] CALL, EXPR get_dummy() [L24] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L24] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L35] RET, EXPR get_dummy() [L35] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L35] CALL, EXPR get_dummy() [L24] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L24] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L35] RET, EXPR get_dummy() [L35] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L36] int i = __VERIFIER_nondet_int(); [L37] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L37] EXPR (*pd2).a [L37] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L37] COND TRUE pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L38] int *pa = &pd1->a; [L39] EXPR pd3->a [L39] i = pd3->a - 10 [L40] EXPR \read(*pa) [L40] COND FALSE !(i < *pa) [L43] CALL, EXPR check(pd2, i) [L29] EXPR s1->a [L29] return s1->a == i; [L43] RET, EXPR check(pd2, i) [L43] COND TRUE !check(pd2, i) [L50] CALL reach_error() [L3] __assert_fail("0", "test22-2.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.2s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 63 SDtfs, 165 SDslu, 104 SDs, 0 SdLazy, 782 SolverSat, 124 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 33 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 13566 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 0 PerfectInterpolantSequences, 15/24 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 incorrect! Received shutdown request...