/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block 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=BIGGEST --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 -i ../../../trunk/examples/svcomp/array-industry-pattern/array_of_struct_single_elem_init.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 10:17:36,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 10:17:36,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 10:17:36,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 10:17:36,513 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 10:17:36,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 10:17:36,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 10:17:36,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 10:17:36,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 10:17:36,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 10:17:36,538 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 10:17:36,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 10:17:36,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 10:17:36,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 10:17:36,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 10:17:36,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 10:17:36,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 10:17:36,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 10:17:36,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 10:17:36,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 10:17:36,561 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 10:17:36,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 10:17:36,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 10:17:36,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 10:17:36,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 10:17:36,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 10:17:36,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 10:17:36,571 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 10:17:36,571 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 10:17:36,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 10:17:36,573 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 10:17:36,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 10:17:36,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 10:17:36,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 10:17:36,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 10:17:36,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 10:17:36,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 10:17:36,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 10:17:36,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 10:17:36,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 10:17:36,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 10:17:36,581 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 [2020-10-12 10:17:36,605 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 10:17:36,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 10:17:36,607 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 10:17:36,607 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 10:17:36,607 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 10:17:36,608 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 10:17:36,608 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 10:17:36,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 10:17:36,608 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 10:17:36,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 10:17:36,609 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 10:17:36,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 10:17:36,609 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 10:17:36,609 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 10:17:36,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 10:17:36,610 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 10:17:36,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 10:17:36,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 10:17:36,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 10:17:36,611 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 10:17:36,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 10:17:36,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 10:17:36,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 10:17:36,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 10:17:36,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 10:17:36,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 10:17:36,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 10:17:36,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 10:17:36,613 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 10:17:36,613 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 10:17:36,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 10:17:36,953 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 10:17:36,957 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 10:17:36,959 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 10:17:36,960 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 10:17:36,961 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_of_struct_single_elem_init.i [2020-10-12 10:17:37,043 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/391d8c352/6b01e7063d324e29859837d70b308f28/FLAGd60b67dcf [2020-10-12 10:17:37,602 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 10:17:37,602 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-industry-pattern/array_of_struct_single_elem_init.i [2020-10-12 10:17:37,611 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/391d8c352/6b01e7063d324e29859837d70b308f28/FLAGd60b67dcf [2020-10-12 10:17:37,917 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/391d8c352/6b01e7063d324e29859837d70b308f28 [2020-10-12 10:17:37,931 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 10:17:37,933 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 10:17:37,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 10:17:37,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 10:17:37,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 10:17:37,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:17:37" (1/1) ... [2020-10-12 10:17:37,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678923a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:17:37, skipping insertion in model container [2020-10-12 10:17:37,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:17:37" (1/1) ... [2020-10-12 10:17:37,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 10:17:37,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 10:17:38,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:17:40,999 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 10:17:41,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:17:41,051 INFO L208 MainTranslator]: Completed translation [2020-10-12 10:17:41,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:17:41 WrapperNode [2020-10-12 10:17:41,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 10:17:41,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 10:17:41,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 10:17:41,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 10:17:41,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:17:41" (1/1) ... [2020-10-12 10:17:41,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:17:41" (1/1) ... [2020-10-12 10:17:41,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:17:41" (1/1) ... [2020-10-12 10:17:41,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:17:41" (1/1) ... [2020-10-12 10:17:41,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:17:41" (1/1) ... [2020-10-12 10:17:41,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:17:41" (1/1) ... [2020-10-12 10:17:41,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:17:41" (1/1) ... [2020-10-12 10:17:41,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 10:17:41,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 10:17:41,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 10:17:41,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 10:17:41,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:17:41" (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 [2020-10-12 10:17:41,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 10:17:41,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 10:17:41,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 10:17:41,196 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 10:17:41,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 10:17:41,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 10:17:41,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 10:17:41,199 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 10:17:41,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 10:17:41,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 10:17:41,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 10:17:41,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 10:17:41,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-12 10:17:41,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 10:17:41,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 10:17:41,569 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 10:17:41,570 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-12 10:17:41,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:17:41 BoogieIcfgContainer [2020-10-12 10:17:41,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 10:17:41,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 10:17:41,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 10:17:41,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 10:17:41,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 10:17:37" (1/3) ... [2020-10-12 10:17:41,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d58490a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:17:41, skipping insertion in model container [2020-10-12 10:17:41,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:17:41" (2/3) ... [2020-10-12 10:17:41,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d58490a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:17:41, skipping insertion in model container [2020-10-12 10:17:41,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:17:41" (3/3) ... [2020-10-12 10:17:41,585 INFO L109 eAbstractionObserver]: Analyzing ICFG array_of_struct_single_elem_init.i [2020-10-12 10:17:41,599 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 10:17:41,608 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 10:17:41,625 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 10:17:41,658 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 10:17:41,659 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 10:17:41,659 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 10:17:41,659 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 10:17:41,659 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 10:17:41,659 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 10:17:41,659 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 10:17:41,659 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 10:17:41,682 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-12 10:17:41,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-12 10:17:41,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:17:41,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:17:41,692 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:17:41,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:17:41,698 INFO L82 PathProgramCache]: Analyzing trace with hash 198312087, now seen corresponding path program 1 times [2020-10-12 10:17:41,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:17:41,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906078001] [2020-10-12 10:17:41,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:17:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:17:41,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:17:41,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:17:41,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 10:17:41,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:17:41,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-12 10:17:41,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:17:41,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:17:41,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:17:41,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:17:41,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 10:17:42,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:17:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:17:42,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:17:42,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:17:42,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:17:42,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:17:42,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 10:17:42,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:17:42,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:17:42,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:17:42,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:17:42,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:17:42,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:17:42,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906078001] [2020-10-12 10:17:42,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:17:42,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 10:17:42,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805041316] [2020-10-12 10:17:42,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 10:17:42,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:17:42,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 10:17:42,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 10:17:42,134 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-10-12 10:17:42,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:17:42,281 INFO L93 Difference]: Finished difference Result 48 states and 62 transitions. [2020-10-12 10:17:42,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 10:17:42,284 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-12 10:17:42,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:17:42,294 INFO L225 Difference]: With dead ends: 48 [2020-10-12 10:17:42,295 INFO L226 Difference]: Without dead ends: 25 [2020-10-12 10:17:42,299 INFO L675 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 [2020-10-12 10:17:42,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-12 10:17:42,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-10-12 10:17:42,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-12 10:17:42,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-10-12 10:17:42,358 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 15 [2020-10-12 10:17:42,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:17:42,358 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-10-12 10:17:42,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 10:17:42,359 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-10-12 10:17:42,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-12 10:17:42,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:17:42,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:17:42,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 10:17:42,361 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:17:42,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:17:42,361 INFO L82 PathProgramCache]: Analyzing trace with hash -2074583670, now seen corresponding path program 1 times [2020-10-12 10:17:42,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:17:42,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868286492] [2020-10-12 10:17:42,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:17:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:17:42,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:17:42,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:17:42,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 10:17:42,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:17:42,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-12 10:17:42,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:17:42,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:17:42,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:17:42,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 10:17:42,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:17:42,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:17:42,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:17:42,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:17:42,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:17:42,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:17:42,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:17:42,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 10:17:42,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:17:42,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:17:42,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:17:42,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:17:42,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:17:42,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:17:42,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868286492] [2020-10-12 10:17:42,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:17:42,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 10:17:42,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050446905] [2020-10-12 10:17:42,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 10:17:42,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:17:42,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 10:17:42,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 10:17:42,606 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 4 states. [2020-10-12 10:17:42,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:17:42,737 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2020-10-12 10:17:42,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 10:17:42,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-12 10:17:42,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:17:42,742 INFO L225 Difference]: With dead ends: 46 [2020-10-12 10:17:42,742 INFO L226 Difference]: Without dead ends: 33 [2020-10-12 10:17:42,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:17:42,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-12 10:17:42,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 24. [2020-10-12 10:17:42,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-12 10:17:42,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-10-12 10:17:42,758 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 15 [2020-10-12 10:17:42,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:17:42,758 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-10-12 10:17:42,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 10:17:42,759 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-10-12 10:17:42,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-12 10:17:42,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:17:42,760 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:17:42,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 10:17:42,760 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:17:42,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:17:42,761 INFO L82 PathProgramCache]: Analyzing trace with hash -84436795, now seen corresponding path program 1 times [2020-10-12 10:17:42,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:17:42,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638046476] [2020-10-12 10:17:42,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:17:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:17:42,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:17:42,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:17:43,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:17:43,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 10:17:43,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:17:43,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 659 [2020-10-12 10:17:43,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:17:43,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 10:17:43,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:17:43,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 10:17:43,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 10:17:43,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:17:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:17:43,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:17:43,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:17:43,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:17:43,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:17:43,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:17:43,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:17:43,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:17:43,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:17:43,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:17:43,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:17:43,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:17:43,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638046476] [2020-10-12 10:17:43,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:17:43,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 10:17:43,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55449892] [2020-10-12 10:17:43,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 10:17:43,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:17:43,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 10:17:43,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-12 10:17:43,702 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 11 states. [2020-10-12 10:17:44,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:17:44,421 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2020-10-12 10:17:44,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 10:17:44,422 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2020-10-12 10:17:44,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:17:44,424 INFO L225 Difference]: With dead ends: 61 [2020-10-12 10:17:44,424 INFO L226 Difference]: Without dead ends: 59 [2020-10-12 10:17:44,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-10-12 10:17:44,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-12 10:17:44,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 37. [2020-10-12 10:17:44,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-12 10:17:44,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2020-10-12 10:17:44,436 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 19 [2020-10-12 10:17:44,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:17:44,437 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2020-10-12 10:17:44,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 10:17:44,437 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2020-10-12 10:17:44,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-12 10:17:44,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:17:44,438 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:17:44,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 10:17:44,439 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:17:44,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:17:44,439 INFO L82 PathProgramCache]: Analyzing trace with hash 173728643, now seen corresponding path program 1 times [2020-10-12 10:17:44,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:17:44,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015400451] [2020-10-12 10:17:44,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:17:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:17:44,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:17:44,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:17:44,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:17:44,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 10:17:44,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:17:44,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 464 [2020-10-12 10:17:44,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:17:44,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:17:44,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:17:44,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 10:17:44,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:17:45,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:17:45,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:17:45,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:17:45,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:17:45,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:17:45,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:17:45,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:17:45,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:17:45,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:17:45,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:17:45,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:17:45,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:17:45,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:17:45,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015400451] [2020-10-12 10:17:45,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:17:45,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 10:17:45,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513502978] [2020-10-12 10:17:45,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 10:17:45,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:17:45,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 10:17:45,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:17:45,098 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 10 states. [2020-10-12 10:17:45,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:17:45,606 INFO L93 Difference]: Finished difference Result 84 states and 106 transitions. [2020-10-12 10:17:45,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 10:17:45,607 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-10-12 10:17:45,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:17:45,611 INFO L225 Difference]: With dead ends: 84 [2020-10-12 10:17:45,612 INFO L226 Difference]: Without dead ends: 67 [2020-10-12 10:17:45,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-10-12 10:17:45,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-12 10:17:45,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 44. [2020-10-12 10:17:45,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-12 10:17:45,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2020-10-12 10:17:45,624 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 19 [2020-10-12 10:17:45,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:17:45,625 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2020-10-12 10:17:45,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 10:17:45,625 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2020-10-12 10:17:45,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-12 10:17:45,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:17:45,627 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:17:45,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 10:17:45,627 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:17:45,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:17:45,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1616196288, now seen corresponding path program 1 times [2020-10-12 10:17:45,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:17:45,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255856474] [2020-10-12 10:17:45,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:17:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:17:45,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:17:45,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:17:45,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:17:46,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:17:46,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 10:17:46,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:17:46,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 850 [2020-10-12 10:17:46,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:17:46,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 10:17:46,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 10:17:46,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 10:17:46,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:17:46,516 ERROR L253 erpolLogProxyWrapper]: Interpolant 5 not inductive [2020-10-12 10:17:46,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 10:17:46,527 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:849) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-10-12 10:17:46,539 INFO L168 Benchmark]: Toolchain (without parser) took 8601.49 ms. Allocated memory was 140.0 MB in the beginning and 662.2 MB in the end (delta: 522.2 MB). Free memory was 102.4 MB in the beginning and 303.8 MB in the end (delta: -201.4 MB). Peak memory consumption was 398.7 MB. Max. memory is 7.1 GB. [2020-10-12 10:17:46,540 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 140.0 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 10:17:46,541 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3118.51 ms. Allocated memory was 140.0 MB in the beginning and 593.0 MB in the end (delta: 453.0 MB). Free memory was 102.2 MB in the beginning and 361.8 MB in the end (delta: -259.6 MB). Peak memory consumption was 343.1 MB. Max. memory is 7.1 GB. [2020-10-12 10:17:46,542 INFO L168 Benchmark]: Boogie Preprocessor took 53.65 ms. Allocated memory is still 593.0 MB. Free memory was 361.8 MB in the beginning and 357.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-10-12 10:17:46,543 INFO L168 Benchmark]: RCFGBuilder took 467.18 ms. Allocated memory is still 593.0 MB. Free memory was 357.8 MB in the beginning and 332.8 MB in the end (delta: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-10-12 10:17:46,544 INFO L168 Benchmark]: TraceAbstraction took 4955.96 ms. Allocated memory was 593.0 MB in the beginning and 662.2 MB in the end (delta: 69.2 MB). Free memory was 332.8 MB in the beginning and 303.8 MB in the end (delta: 29.0 MB). Peak memory consumption was 176.1 MB. Max. memory is 7.1 GB. [2020-10-12 10:17:46,548 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 140.0 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3118.51 ms. Allocated memory was 140.0 MB in the beginning and 593.0 MB in the end (delta: 453.0 MB). Free memory was 102.2 MB in the beginning and 361.8 MB in the end (delta: -259.6 MB). Peak memory consumption was 343.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.65 ms. Allocated memory is still 593.0 MB. Free memory was 361.8 MB in the beginning and 357.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 467.18 ms. Allocated memory is still 593.0 MB. Free memory was 357.8 MB in the beginning and 332.8 MB in the end (delta: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4955.96 ms. Allocated memory was 593.0 MB in the beginning and 662.2 MB in the end (delta: 69.2 MB). Free memory was 332.8 MB in the beginning and 303.8 MB in the end (delta: 29.0 MB). Peak memory consumption was 176.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...