/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/brs3f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:54:30,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:54:30,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:54:30,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:54:30,535 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:54:30,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:54:30,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:54:30,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:54:30,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:54:30,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:54:30,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:54:30,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:54:30,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:54:30,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:54:30,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:54:30,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:54:30,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:54:30,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:54:30,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:54:30,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:54:30,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:54:30,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:54:30,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:54:30,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:54:30,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:54:30,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:54:30,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:54:30,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:54:30,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:54:30,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:54:30,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:54:30,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:54:30,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:54:30,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:54:30,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:54:30,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:54:30,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:54:30,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:54:30,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:54:30,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:54:30,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:54:30,578 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 22:54:30,605 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:54:30,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:54:30,607 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:54:30,607 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:54:30,607 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:54:30,608 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:54:30,608 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:54:30,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:54:30,608 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:54:30,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:54:30,609 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:54:30,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:54:30,609 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:54:30,609 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:54:30,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:54:30,610 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:54:30,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:54:30,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:54:30,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:54:30,611 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:54:30,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:54:30,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:54:30,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:54:30,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:54:30,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:54:30,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:54:30,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:54:30,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:54:30,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:54:30,613 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 -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:54:31,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:54:31,119 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:54:31,123 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:54:31,125 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:54:31,126 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:54:31,127 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs3f.c [2020-09-24 22:54:31,209 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5eb0d735/5d13f22040ed4cfd8fa17e74e50604ba/FLAG90cefee7d [2020-09-24 22:54:31,787 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:54:31,788 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs3f.c [2020-09-24 22:54:31,797 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5eb0d735/5d13f22040ed4cfd8fa17e74e50604ba/FLAG90cefee7d [2020-09-24 22:54:32,092 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5eb0d735/5d13f22040ed4cfd8fa17e74e50604ba [2020-09-24 22:54:32,105 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:54:32,110 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:54:32,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:54:32,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:54:32,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:54:32,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:54:32" (1/1) ... [2020-09-24 22:54:32,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aae5b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:32, skipping insertion in model container [2020-09-24 22:54:32,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:54:32" (1/1) ... [2020-09-24 22:54:32,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:54:32,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:54:32,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:54:32,445 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:54:32,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:54:32,502 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:54:32,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:32 WrapperNode [2020-09-24 22:54:32,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:54:32,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:54:32,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:54:32,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:54:32,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:32" (1/1) ... [2020-09-24 22:54:32,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:32" (1/1) ... [2020-09-24 22:54:32,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:32" (1/1) ... [2020-09-24 22:54:32,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:32" (1/1) ... [2020-09-24 22:54:32,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:32" (1/1) ... [2020-09-24 22:54:32,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:32" (1/1) ... [2020-09-24 22:54:32,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:32" (1/1) ... [2020-09-24 22:54:32,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:54:32,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:54:32,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:54:32,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:54:32,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:54:32,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:54:32,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:54:32,809 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 22:54:32,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 22:54:32,809 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:54:32,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:54:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 22:54:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 22:54:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 22:54:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:54:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 22:54:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:54:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 22:54:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 22:54:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 22:54:32,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 22:54:32,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 22:54:32,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:54:32,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:54:33,158 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:54:33,159 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 22:54:33,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:54:33 BoogieIcfgContainer [2020-09-24 22:54:33,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:54:33,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:54:33,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:54:33,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:54:33,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:54:32" (1/3) ... [2020-09-24 22:54:33,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21bb0531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:54:33, skipping insertion in model container [2020-09-24 22:54:33,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:32" (2/3) ... [2020-09-24 22:54:33,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21bb0531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:54:33, skipping insertion in model container [2020-09-24 22:54:33,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:54:33" (3/3) ... [2020-09-24 22:54:33,176 INFO L109 eAbstractionObserver]: Analyzing ICFG brs3f.c [2020-09-24 22:54:33,189 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:54:33,200 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:54:33,226 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:54:33,264 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:54:33,264 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:54:33,264 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:54:33,265 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:54:33,265 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:54:33,265 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:54:33,265 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:54:33,265 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:54:33,305 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-09-24 22:54:33,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 22:54:33,314 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:54:33,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:54:33,316 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:54:33,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:54:33,324 INFO L82 PathProgramCache]: Analyzing trace with hash 221259408, now seen corresponding path program 1 times [2020-09-24 22:54:33,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:54:33,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189255786] [2020-09-24 22:54:33,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:54:33,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:33,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:33,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:33,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:33,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 22:54:33,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:54:33,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-09-24 22:54:33,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:33,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:33,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 22:54:33,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:33,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:54:34,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:54:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:34,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:34,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:34,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:54:34,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:34,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:54:34,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:34,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:34,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:34,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:34,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:34,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:54:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:34,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:34,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:34,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:54:34,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:34,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:54:34,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:34,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:34,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:34,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:34,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:34,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:54:34,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189255786] [2020-09-24 22:54:34,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:54:34,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 22:54:34,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843289662] [2020-09-24 22:54:34,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 22:54:34,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:54:34,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 22:54:34,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 22:54:34,125 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 3 states. [2020-09-24 22:54:34,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:54:34,290 INFO L93 Difference]: Finished difference Result 101 states and 116 transitions. [2020-09-24 22:54:34,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 22:54:34,293 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-09-24 22:54:34,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:54:34,304 INFO L225 Difference]: With dead ends: 101 [2020-09-24 22:54:34,305 INFO L226 Difference]: Without dead ends: 47 [2020-09-24 22:54:34,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 22:54:34,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-24 22:54:34,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-09-24 22:54:34,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-24 22:54:34,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2020-09-24 22:54:34,363 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 30 [2020-09-24 22:54:34,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:54:34,364 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2020-09-24 22:54:34,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 22:54:34,364 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2020-09-24 22:54:34,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 22:54:34,366 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:54:34,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:54:34,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:54:34,367 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:54:34,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:54:34,367 INFO L82 PathProgramCache]: Analyzing trace with hash -151091841, now seen corresponding path program 1 times [2020-09-24 22:54:34,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:54:34,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484239099] [2020-09-24 22:54:34,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:54:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:34,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:34,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:34,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:34,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 22:54:34,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:54:34,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 486 [2020-09-24 22:54:34,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:34,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:54:34,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 22:54:34,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 22:54:34,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:54:34,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:54:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:34,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:34,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:34,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:54:34,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:34,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:54:34,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:34,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:34,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:34,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:34,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:54:34,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:54:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:34,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:34,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:34,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:54:34,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:34,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:54:34,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:34,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:54:34,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:34,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:54:34,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:34,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:54:34,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484239099] [2020-09-24 22:54:34,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:54:34,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:54:34,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729058242] [2020-09-24 22:54:35,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:54:35,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:54:35,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:54:35,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:54:35,003 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 5 states. [2020-09-24 22:54:35,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:54:35,172 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2020-09-24 22:54:35,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:54:35,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-24 22:54:35,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:54:35,175 INFO L225 Difference]: With dead ends: 67 [2020-09-24 22:54:35,175 INFO L226 Difference]: Without dead ends: 49 [2020-09-24 22:54:35,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:54:35,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-24 22:54:35,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-09-24 22:54:35,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-24 22:54:35,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-09-24 22:54:35,186 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 30 [2020-09-24 22:54:35,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:54:35,187 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-09-24 22:54:35,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:54:35,187 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-09-24 22:54:35,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 22:54:35,189 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:54:35,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:54:35,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:54:35,189 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:54:35,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:54:35,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1707000309, now seen corresponding path program 1 times [2020-09-24 22:54:35,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:54:35,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529890434] [2020-09-24 22:54:35,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:54:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:35,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:35,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:35,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:35,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:37,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:37,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 22:54:37,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:54:37,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1923 [2020-09-24 22:54:37,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:37,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:54:37,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-24 22:54:37,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 22:54:37,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:37,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:54:37,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:37,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:37,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:37,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:54:37,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:37,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:54:37,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:37,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:37,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:37,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:37,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:37,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:54:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:37,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:37,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:37,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:54:37,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:37,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:54:37,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:37,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:37,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:37,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:37,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:37,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 22:54:37,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529890434] [2020-09-24 22:54:37,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:54:37,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 22:54:37,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067440526] [2020-09-24 22:54:37,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:54:37,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:54:37,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:54:37,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:54:37,295 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 9 states. [2020-09-24 22:54:37,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:54:37,666 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-09-24 22:54:37,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 22:54:37,667 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-09-24 22:54:37,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:54:37,668 INFO L225 Difference]: With dead ends: 64 [2020-09-24 22:54:37,668 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 22:54:37,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-09-24 22:54:37,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 22:54:37,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-09-24 22:54:37,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-24 22:54:37,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-09-24 22:54:37,678 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 42 [2020-09-24 22:54:37,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:54:37,679 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-09-24 22:54:37,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:54:37,679 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-09-24 22:54:37,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 22:54:37,680 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:54:37,680 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:54:37,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:54:37,681 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:54:37,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:54:37,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1495951507, now seen corresponding path program 1 times [2020-09-24 22:54:37,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:54:37,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625017034] [2020-09-24 22:54:37,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:54:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:37,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:37,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:37,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:38,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:38,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 22:54:38,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:54:38,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 975 [2020-09-24 22:54:38,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:38,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:54:38,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 22:54:38,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 22:54:38,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:38,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:54:38,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:38,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:38,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:38,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:54:38,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:38,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:54:38,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:38,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:38,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:38,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:38,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:38,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:54:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:38,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:38,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:38,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:54:38,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:38,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:54:38,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:38,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:38,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:38,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:38,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:38,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 22:54:38,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625017034] [2020-09-24 22:54:38,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:54:38,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 22:54:38,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570697846] [2020-09-24 22:54:38,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 22:54:38,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:54:38,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 22:54:38,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:54:38,753 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 4 states. [2020-09-24 22:54:38,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:54:38,883 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-09-24 22:54:38,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 22:54:38,884 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-24 22:54:38,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:54:38,885 INFO L225 Difference]: With dead ends: 87 [2020-09-24 22:54:38,885 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 22:54:38,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:54:38,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 22:54:38,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2020-09-24 22:54:38,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 22:54:38,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2020-09-24 22:54:38,894 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 46 [2020-09-24 22:54:38,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:54:38,894 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2020-09-24 22:54:38,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 22:54:38,895 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2020-09-24 22:54:38,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 22:54:38,896 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:54:38,896 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:54:38,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:54:38,897 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:54:38,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:54:38,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1747495296, now seen corresponding path program 1 times [2020-09-24 22:54:38,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:54:38,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877153292] [2020-09-24 22:54:38,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:54:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:38,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:38,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:39,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:39,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:39,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:39,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:40,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:41,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:41,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:41,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:42,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:42,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:43,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:43,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 22:54:43,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 22:54:43,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 22:54:43,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:43,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:54:43,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 22:54:43,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 22:54:43,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:54:44,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:54:44,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:44,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:44,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:44,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:54:44,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:44,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:54:44,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:44,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:44,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:44,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:44,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:54:44,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:54:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:44,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:44,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:44,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:54:44,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:44,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:54:44,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:44,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:44,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:44,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:44,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:44,225 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:54:44,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877153292] [2020-09-24 22:54:44,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:54:44,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 22:54:44,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732537804] [2020-09-24 22:54:44,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 22:54:44,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:54:44,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 22:54:44,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-09-24 22:54:44,232 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 14 states. [2020-09-24 22:54:47,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:54:47,351 INFO L93 Difference]: Finished difference Result 127 states and 136 transitions. [2020-09-24 22:54:47,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-24 22:54:47,352 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2020-09-24 22:54:47,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:54:47,354 INFO L225 Difference]: With dead ends: 127 [2020-09-24 22:54:47,354 INFO L226 Difference]: Without dead ends: 106 [2020-09-24 22:54:47,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=180, Invalid=632, Unknown=0, NotChecked=0, Total=812 [2020-09-24 22:54:47,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-24 22:54:47,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 87. [2020-09-24 22:54:47,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-24 22:54:47,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 93 transitions. [2020-09-24 22:54:47,381 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 93 transitions. Word has length 52 [2020-09-24 22:54:47,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:54:47,382 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 93 transitions. [2020-09-24 22:54:47,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 22:54:47,382 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 93 transitions. [2020-09-24 22:54:47,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 22:54:47,383 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:54:47,383 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:54:47,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:54:47,384 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:54:47,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:54:47,384 INFO L82 PathProgramCache]: Analyzing trace with hash -557611095, now seen corresponding path program 1 times [2020-09-24 22:54:47,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:54:47,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138884843] [2020-09-24 22:54:47,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:54:47,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 22:54:47,427 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 22:54:47,427 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 22:54:47,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:54:47,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 10:54:47 BoogieIcfgContainer [2020-09-24 22:54:47,466 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 22:54:47,470 INFO L168 Benchmark]: Toolchain (without parser) took 15361.85 ms. Allocated memory was 146.8 MB in the beginning and 301.5 MB in the end (delta: 154.7 MB). Free memory was 103.6 MB in the beginning and 124.7 MB in the end (delta: -21.0 MB). Peak memory consumption was 133.7 MB. Max. memory is 7.1 GB. [2020-09-24 22:54:47,472 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 146.8 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-24 22:54:47,473 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.98 ms. Allocated memory is still 146.8 MB. Free memory was 103.0 MB in the beginning and 92.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-24 22:54:47,479 INFO L168 Benchmark]: Boogie Preprocessor took 186.61 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 92.5 MB in the beginning and 181.2 MB in the end (delta: -88.8 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-24 22:54:47,480 INFO L168 Benchmark]: RCFGBuilder took 474.04 ms. Allocated memory is still 203.9 MB. Free memory was 181.2 MB in the beginning and 162.1 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2020-09-24 22:54:47,480 INFO L168 Benchmark]: TraceAbstraction took 14299.43 ms. Allocated memory was 203.9 MB in the beginning and 301.5 MB in the end (delta: 97.5 MB). Free memory was 162.1 MB in the beginning and 124.7 MB in the end (delta: 37.5 MB). Peak memory consumption was 135.0 MB. Max. memory is 7.1 GB. [2020-09-24 22:54:47,493 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 146.8 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 390.98 ms. Allocated memory is still 146.8 MB. Free memory was 103.0 MB in the beginning and 92.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 186.61 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 92.5 MB in the beginning and 181.2 MB in the end (delta: -88.8 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 474.04 ms. Allocated memory is still 203.9 MB. Free memory was 181.2 MB in the beginning and 162.1 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14299.43 ms. Allocated memory was 203.9 MB in the beginning and 301.5 MB in the end (delta: 97.5 MB). Free memory was 162.1 MB in the beginning and 124.7 MB in the end (delta: 37.5 MB). Peak memory consumption was 135.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] i=0 [L29] COND TRUE i