/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=BIGGEST --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/brs2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:40:48,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:40:48,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:40:48,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:40:48,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:40:48,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:40:48,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:40:48,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:40:48,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:40:48,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:40:48,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:40:48,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:40:48,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:40:48,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:40:48,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:40:48,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:40:48,170 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:40:48,171 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:40:48,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:40:48,175 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:40:48,177 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:40:48,178 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:40:48,179 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:40:48,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:40:48,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:40:48,189 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:40:48,189 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:40:48,190 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:40:48,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:40:48,196 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:40:48,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:40:48,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:40:48,199 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:40:48,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:40:48,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:40:48,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:40:48,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:40:48,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:40:48,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:40:48,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:40:48,207 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:40:48,208 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 20:40:48,272 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:40:48,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:40:48,278 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:40:48,278 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:40:48,278 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:40:48,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:40:48,279 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:40:48,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:40:48,279 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:40:48,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:40:48,280 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:40:48,280 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:40:48,280 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:40:48,280 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:40:48,280 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:40:48,280 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:40:48,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:40:48,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:40:48,281 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:40:48,281 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:40:48,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:40:48,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:40:48,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:40:48,283 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:40:48,283 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:40:48,284 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:40:48,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:40:48,284 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:40:48,284 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:40:48,284 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:40:48,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:40:48,846 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:40:48,850 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:40:48,853 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:40:48,855 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:40:48,856 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs2f.c [2020-09-24 20:40:48,937 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dfaffad0a/38126805990f4112be661b97eb8c1ec2/FLAG6e8e9c280 [2020-09-24 20:40:49,434 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:40:49,435 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs2f.c [2020-09-24 20:40:49,445 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dfaffad0a/38126805990f4112be661b97eb8c1ec2/FLAG6e8e9c280 [2020-09-24 20:40:49,764 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dfaffad0a/38126805990f4112be661b97eb8c1ec2 [2020-09-24 20:40:49,780 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:40:49,786 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:40:49,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:40:49,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:40:49,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:40:49,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:40:49" (1/1) ... [2020-09-24 20:40:49,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36687376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:40:49, skipping insertion in model container [2020-09-24 20:40:49,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:40:49" (1/1) ... [2020-09-24 20:40:49,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:40:49,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:40:50,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:40:50,133 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:40:50,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:40:50,181 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:40:50,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:40:50 WrapperNode [2020-09-24 20:40:50,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:40:50,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:40:50,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:40:50,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:40:50,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:40:50" (1/1) ... [2020-09-24 20:40:50,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:40:50" (1/1) ... [2020-09-24 20:40:50,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:40:50" (1/1) ... [2020-09-24 20:40:50,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:40:50" (1/1) ... [2020-09-24 20:40:50,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:40:50" (1/1) ... [2020-09-24 20:40:50,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:40:50" (1/1) ... [2020-09-24 20:40:50,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:40:50" (1/1) ... [2020-09-24 20:40:50,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:40:50,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:40:50,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:40:50,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:40:50,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:40:50" (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 20:40:50,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:40:50,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:40:50,397 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 20:40:50,397 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 20:40:50,397 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:40:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:40:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 20:40:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 20:40:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 20:40:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:40:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 20:40:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:40:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 20:40:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 20:40:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 20:40:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 20:40:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 20:40:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:40:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:40:50,730 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:40:50,731 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 20:40:50,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:40:50 BoogieIcfgContainer [2020-09-24 20:40:50,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:40:50,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:40:50,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:40:50,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:40:50,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:40:49" (1/3) ... [2020-09-24 20:40:50,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aaea107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:40:50, skipping insertion in model container [2020-09-24 20:40:50,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:40:50" (2/3) ... [2020-09-24 20:40:50,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aaea107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:40:50, skipping insertion in model container [2020-09-24 20:40:50,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:40:50" (3/3) ... [2020-09-24 20:40:50,746 INFO L109 eAbstractionObserver]: Analyzing ICFG brs2f.c [2020-09-24 20:40:50,770 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:40:50,780 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:40:50,804 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:40:50,835 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:40:50,835 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:40:50,835 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:40:50,835 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:40:50,836 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:40:50,836 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:40:50,836 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:40:50,836 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:40:50,860 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-09-24 20:40:50,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 20:40:50,868 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:40:50,869 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 20:40:50,870 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:40:50,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:40:50,877 INFO L82 PathProgramCache]: Analyzing trace with hash 221259408, now seen corresponding path program 1 times [2020-09-24 20:40:50,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:40:50,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135325903] [2020-09-24 20:40:50,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:40:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:40:51,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:40:51,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:40:51,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:40:51,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 20:40:51,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:40:51,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 404 [2020-09-24 20:40:51,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:40:51,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:40:51,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 20:40:51,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 20:40:51,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 20:40:51,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:40:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:40:51,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:40:51,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:40:51,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:40:51,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:40:51,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:40:51,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:40:51,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:40:51,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:40:51,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:40:51,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:40:51,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:40:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:40:51,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:40:51,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:40:51,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:40:51,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:40:51,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 20:40:51,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:40:51,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:40:51,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:40:51,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:40:51,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:40:51,668 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 20:40:51,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135325903] [2020-09-24 20:40:51,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:40:51,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:40:51,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041139028] [2020-09-24 20:40:51,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:40:51,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:40:51,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:40:51,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:40:51,709 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 5 states. [2020-09-24 20:40:52,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:40:52,005 INFO L93 Difference]: Finished difference Result 107 states and 125 transitions. [2020-09-24 20:40:52,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:40:52,008 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-24 20:40:52,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:40:52,020 INFO L225 Difference]: With dead ends: 107 [2020-09-24 20:40:52,020 INFO L226 Difference]: Without dead ends: 49 [2020-09-24 20:40:52,025 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 20:40:52,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-24 20:40:52,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-09-24 20:40:52,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-24 20:40:52,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-09-24 20:40:52,082 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 30 [2020-09-24 20:40:52,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:40:52,083 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-09-24 20:40:52,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:40:52,083 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-09-24 20:40:52,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 20:40:52,085 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:40:52,085 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 20:40:52,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:40:52,086 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:40:52,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:40:52,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1707000309, now seen corresponding path program 1 times [2020-09-24 20:40:52,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:40:52,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755109415] [2020-09-24 20:40:52,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:40:52,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:40:52,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:40:52,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:40:52,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:40:52,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:40:54,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:40:54,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 20:40:54,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:40:54,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2292 [2020-09-24 20:40:54,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:40:54,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:40:54,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 20:40:54,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 20:40:54,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:40:54,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:40:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:40:54,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:40:54,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:40:54,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:40:54,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:40:54,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:40:54,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:40:54,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:40:54,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:40:54,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:40:54,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:40:54,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:40:54,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:40:54,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:40:54,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:40:54,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:40:54,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:40:54,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:40:54,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:40:54,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:40:54,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:40:54,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:40:54,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:40:54,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 20:40:54,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1755109415] [2020-09-24 20:40:54,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:40:54,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 20:40:54,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088878243] [2020-09-24 20:40:54,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:40:54,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:40:54,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:40:54,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:40:54,591 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 9 states. [2020-09-24 20:40:55,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:40:55,027 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2020-09-24 20:40:55,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 20:40:55,028 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-09-24 20:40:55,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:40:55,031 INFO L225 Difference]: With dead ends: 77 [2020-09-24 20:40:55,032 INFO L226 Difference]: Without dead ends: 71 [2020-09-24 20:40:55,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-09-24 20:40:55,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-24 20:40:55,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 52. [2020-09-24 20:40:55,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-24 20:40:55,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-09-24 20:40:55,055 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 42 [2020-09-24 20:40:55,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:40:55,057 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-09-24 20:40:55,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:40:55,057 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-09-24 20:40:55,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 20:40:55,060 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:40:55,062 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 20:40:55,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:40:55,063 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:40:55,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:40:55,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1495951507, now seen corresponding path program 1 times [2020-09-24 20:40:55,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:40:55,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418019424] [2020-09-24 20:40:55,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:40:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:40:55,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:40:55,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:40:55,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:40:56,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:40:56,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 20:40:56,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:40:56,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 984 [2020-09-24 20:40:56,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:40:56,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:40:56,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 20:40:56,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 20:40:56,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:40:56,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:40:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:40:56,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:40:56,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:40:56,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:40:56,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:40:56,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:40:56,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:40:56,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:40:56,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:40:56,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:40:56,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:40:56,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:40:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:40:56,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:40:56,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:40:56,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:40:56,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:40:56,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:40:56,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:40:56,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:40:56,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:40:56,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:40:56,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:40:56,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:40:56,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418019424] [2020-09-24 20:40:56,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:40:56,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 20:40:56,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287305105] [2020-09-24 20:40:56,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 20:40:56,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:40:56,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 20:40:56,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:40:56,423 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 12 states. [2020-09-24 20:40:57,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:40:57,091 INFO L93 Difference]: Finished difference Result 114 states and 127 transitions. [2020-09-24 20:40:57,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 20:40:57,091 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-09-24 20:40:57,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:40:57,093 INFO L225 Difference]: With dead ends: 114 [2020-09-24 20:40:57,093 INFO L226 Difference]: Without dead ends: 67 [2020-09-24 20:40:57,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-09-24 20:40:57,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-24 20:40:57,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 60. [2020-09-24 20:40:57,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 20:40:57,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2020-09-24 20:40:57,111 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 46 [2020-09-24 20:40:57,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:40:57,112 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2020-09-24 20:40:57,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 20:40:57,113 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2020-09-24 20:40:57,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 20:40:57,116 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:40:57,117 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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] [2020-09-24 20:40:57,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:40:57,117 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:40:57,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:40:57,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1872706551, now seen corresponding path program 1 times [2020-09-24 20:40:57,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:40:57,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684387264] [2020-09-24 20:40:57,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:40:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:40:57,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:40:57,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:40:57,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:40:57,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:00,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:00,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 20:41:00,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:41:00,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3466 [2020-09-24 20:41:00,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:00,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:41:00,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-24 20:41:00,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 20:41:00,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:41:00,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:41:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:00,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:00,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:00,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:41:00,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:41:00,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:41:00,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:00,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:41:00,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:41:00,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:41:00,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:41:00,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:41:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:00,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:00,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:00,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:41:00,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:41:00,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:41:00,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:00,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:41:00,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:41:00,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:41:00,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:41:00,897 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 20:41:00,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684387264] [2020-09-24 20:41:00,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:41:00,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 20:41:00,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786769248] [2020-09-24 20:41:00,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 20:41:00,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:41:00,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 20:41:00,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-09-24 20:41:00,901 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 14 states. [2020-09-24 20:41:02,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:41:02,733 INFO L93 Difference]: Finished difference Result 136 states and 146 transitions. [2020-09-24 20:41:02,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-24 20:41:02,734 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2020-09-24 20:41:02,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:41:02,742 INFO L225 Difference]: With dead ends: 136 [2020-09-24 20:41:02,743 INFO L226 Difference]: Without dead ends: 130 [2020-09-24 20:41:02,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=390, Invalid=1502, Unknown=0, NotChecked=0, Total=1892 [2020-09-24 20:41:02,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-09-24 20:41:02,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 92. [2020-09-24 20:41:02,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-24 20:41:02,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2020-09-24 20:41:02,767 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 58 [2020-09-24 20:41:02,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:41:02,768 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2020-09-24 20:41:02,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 20:41:02,768 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2020-09-24 20:41:02,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 20:41:02,771 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:41:02,772 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 20:41:02,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:41:02,773 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:41:02,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:41:02,773 INFO L82 PathProgramCache]: Analyzing trace with hash -557611095, now seen corresponding path program 1 times [2020-09-24 20:41:02,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:41:02,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576553887] [2020-09-24 20:41:02,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:41:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:02,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:03,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:03,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:03,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:03,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:04,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:04,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:05,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:05,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:05,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:07,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:07,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 20:41:07,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 20:41:07,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 20:41:07,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:07,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:41:07,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 20:41:07,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 20:41:07,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:41:08,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:41:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:08,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:08,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:08,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:41:08,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:41:08,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:41:08,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:08,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:41:08,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:41:08,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:41:08,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:41:08,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:41:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:08,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:08,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:08,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:41:08,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:41:08,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:41:08,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:08,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:41:08,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:41:08,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:41:08,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:41:08,359 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:41:08,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576553887] [2020-09-24 20:41:08,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:41:08,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 20:41:08,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744775647] [2020-09-24 20:41:08,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 20:41:08,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:41:08,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 20:41:08,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-09-24 20:41:08,365 INFO L87 Difference]: Start difference. First operand 92 states and 99 transitions. Second operand 18 states. [2020-09-24 20:41:09,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:41:09,380 INFO L93 Difference]: Finished difference Result 202 states and 223 transitions. [2020-09-24 20:41:09,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-24 20:41:09,381 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 58 [2020-09-24 20:41:09,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:41:09,382 INFO L225 Difference]: With dead ends: 202 [2020-09-24 20:41:09,382 INFO L226 Difference]: Without dead ends: 135 [2020-09-24 20:41:09,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=199, Invalid=1061, Unknown=0, NotChecked=0, Total=1260 [2020-09-24 20:41:09,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-09-24 20:41:09,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 118. [2020-09-24 20:41:09,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-24 20:41:09,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 129 transitions. [2020-09-24 20:41:09,408 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 129 transitions. Word has length 58 [2020-09-24 20:41:09,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:41:09,413 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 129 transitions. [2020-09-24 20:41:09,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 20:41:09,413 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 129 transitions. [2020-09-24 20:41:09,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-24 20:41:09,414 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:41:09,414 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 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] [2020-09-24 20:41:09,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:41:09,418 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:41:09,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:41:09,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1245154100, now seen corresponding path program 2 times [2020-09-24 20:41:09,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:41:09,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250556034] [2020-09-24 20:41:09,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:41:09,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:09,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:09,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:09,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:10,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:10,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:10,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:11,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:11,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:12,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:12,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:14,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:14,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 20:41:14,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 20:41:14,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 20:41:14,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:14,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:41:14,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 20:41:14,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:41:14,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:41:14,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:41:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:14,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:14,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:14,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:41:14,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:41:14,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:41:14,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:14,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:41:14,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:41:14,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:41:14,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:41:14,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:41:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:14,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:14,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:14,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:41:14,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:41:14,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:41:14,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:14,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:41:14,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:41:14,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:41:14,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:41:14,755 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 20:41:14,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250556034] [2020-09-24 20:41:14,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:41:14,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 20:41:14,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563803495] [2020-09-24 20:41:14,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 20:41:14,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:41:14,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 20:41:14,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-09-24 20:41:14,761 INFO L87 Difference]: Start difference. First operand 118 states and 129 transitions. Second operand 18 states. [2020-09-24 20:41:15,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:41:15,822 INFO L93 Difference]: Finished difference Result 158 states and 171 transitions. [2020-09-24 20:41:15,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-24 20:41:15,822 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 68 [2020-09-24 20:41:15,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:41:15,825 INFO L225 Difference]: With dead ends: 158 [2020-09-24 20:41:15,825 INFO L226 Difference]: Without dead ends: 152 [2020-09-24 20:41:15,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=280, Invalid=1280, Unknown=0, NotChecked=0, Total=1560 [2020-09-24 20:41:15,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-09-24 20:41:15,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 143. [2020-09-24 20:41:15,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-09-24 20:41:15,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 157 transitions. [2020-09-24 20:41:15,841 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 157 transitions. Word has length 68 [2020-09-24 20:41:15,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:41:15,841 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 157 transitions. [2020-09-24 20:41:15,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 20:41:15,842 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 157 transitions. [2020-09-24 20:41:15,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-24 20:41:15,843 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:41:15,843 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2020-09-24 20:41:15,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:41:15,844 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:41:15,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:41:15,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1864607259, now seen corresponding path program 3 times [2020-09-24 20:41:15,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:41:15,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498258319] [2020-09-24 20:41:15,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:41:15,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:15,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:16,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:16,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:16,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:17,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:17,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:17,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:17,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:18,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:20,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:20,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 20:41:20,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 20:41:20,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-24 20:41:20,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:20,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 20:41:20,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 20:41:20,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 20:41:20,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:41:21,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:41:21,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:21,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:21,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:21,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:41:21,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:41:21,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:41:21,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:21,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:41:21,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:41:21,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:41:21,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:41:21,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:41:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:21,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:21,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:21,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:41:21,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:41:21,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:41:21,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:21,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:41:21,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:41:21,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:41:21,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:41:21,537 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 20 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:41:21,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498258319] [2020-09-24 20:41:21,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:41:21,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-09-24 20:41:21,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233939154] [2020-09-24 20:41:21,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-09-24 20:41:21,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:41:21,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-09-24 20:41:21,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2020-09-24 20:41:21,540 INFO L87 Difference]: Start difference. First operand 143 states and 157 transitions. Second operand 26 states. [2020-09-24 20:41:23,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:41:23,580 INFO L93 Difference]: Finished difference Result 199 states and 218 transitions. [2020-09-24 20:41:23,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-09-24 20:41:23,582 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 70 [2020-09-24 20:41:23,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:41:23,584 INFO L225 Difference]: With dead ends: 199 [2020-09-24 20:41:23,584 INFO L226 Difference]: Without dead ends: 193 [2020-09-24 20:41:23,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=412, Invalid=2668, Unknown=0, NotChecked=0, Total=3080 [2020-09-24 20:41:23,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-09-24 20:41:23,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 154. [2020-09-24 20:41:23,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-24 20:41:23,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 169 transitions. [2020-09-24 20:41:23,600 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 169 transitions. Word has length 70 [2020-09-24 20:41:23,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:41:23,600 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 169 transitions. [2020-09-24 20:41:23,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-09-24 20:41:23,600 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 169 transitions. [2020-09-24 20:41:23,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-24 20:41:23,602 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:41:23,602 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 20:41:23,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:41:23,602 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:41:23,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:41:23,603 INFO L82 PathProgramCache]: Analyzing trace with hash 685477565, now seen corresponding path program 4 times [2020-09-24 20:41:23,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:41:23,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976314600] [2020-09-24 20:41:23,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:41:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 20:41:23,627 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 20:41:23,627 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 20:41:23,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:41:23,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:41:23 BoogieIcfgContainer [2020-09-24 20:41:23,656 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 20:41:23,659 INFO L168 Benchmark]: Toolchain (without parser) took 33876.56 ms. Allocated memory was 137.4 MB in the beginning and 435.2 MB in the end (delta: 297.8 MB). Free memory was 100.9 MB in the beginning and 133.2 MB in the end (delta: -32.3 MB). Peak memory consumption was 265.5 MB. Max. memory is 7.1 GB. [2020-09-24 20:41:23,660 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 20:41:23,661 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.34 ms. Allocated memory is still 137.4 MB. Free memory was 100.3 MB in the beginning and 89.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-09-24 20:41:23,662 INFO L168 Benchmark]: Boogie Preprocessor took 132.55 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 89.5 MB in the beginning and 177.3 MB in the end (delta: -87.8 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-24 20:41:23,663 INFO L168 Benchmark]: RCFGBuilder took 421.14 ms. Allocated memory is still 199.8 MB. Free memory was 177.3 MB in the beginning and 158.1 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. [2020-09-24 20:41:23,664 INFO L168 Benchmark]: TraceAbstraction took 32918.70 ms. Allocated memory was 199.8 MB in the beginning and 435.2 MB in the end (delta: 235.4 MB). Free memory was 158.1 MB in the beginning and 133.2 MB in the end (delta: 24.9 MB). Peak memory consumption was 260.3 MB. Max. memory is 7.1 GB. [2020-09-24 20:41:23,667 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 394.34 ms. Allocated memory is still 137.4 MB. Free memory was 100.3 MB in the beginning and 89.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.55 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 89.5 MB in the beginning and 177.3 MB in the end (delta: -87.8 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 421.14 ms. Allocated memory is still 199.8 MB. Free memory was 177.3 MB in the beginning and 158.1 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 32918.70 ms. Allocated memory was 199.8 MB in the beginning and 435.2 MB in the end (delta: 235.4 MB). Free memory was 158.1 MB in the beginning and 133.2 MB in the end (delta: 24.9 MB). Peak memory consumption was 260.3 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